View MAX244CQH-D_8965964.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

19-4323; rev 17; 1/15 max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers general description the max220?ax249 family of line drivers/receivers isintended for all eia/tia-232e and v.28/v.24 communica- tions interfaces, particularly applications where ?2v is not available. the max225, max233, max235, and max245/max246/ max247 use no external components and are recommended for applications where printed circuit board space is critical. the max220-max249 are offered in 26 different pack- ages with temperatures from 0 to +70? up to -55? to +125?. see ordering information table at the end of the data sheet for all package and temperature options. applications ? interface translation ? multidrop rs-232 networks ? portable diagnostics equipment benefits and features saves board space? integrated charge pump circuitry ? eliminates the need for a bipolar 12v supply ? enables single supply operation from +5v supply ? integrated capacitors (max223, max233, max235,max245- max 247) saves power for reduced power requirements? 5? shutdown mode autoshutdown and ucsp are trademarks of maxim integrated products, inc. top view 1615 14 13 12 11 10 9 12 3 4 5 6 7 8 v cc gndt1out r1in c2+ c1- v+ c1+ + max220max232 max232a r1out t1int2in r2out r2in t2out v- c2- dip/so v+ v- 2 +10v c1+ c1c2 13 4 5 1110 12 9 6 14 7 13 8 t1in r1out t2in r2out t1out r1in t2out r2in +5v input c2+ -10v c4 rs-232outputs rs-232inputs ttl/cmos inputs ttl/cmos outputs gnd 15 5k 5k 400k 400k +5v +5v +10v to -10v voltage inverter +5v to +10v voltage doubler 16 c3 c5 capacitance ( f) devicemax220 max232 max232a c1 0.047 1.00.1 c2 0.33 1.00.1 c3 0.33 1.00.1 c4 0.33 1.00.1 c5 0.33 1.00.1 c2- c1- v cc ordering information and selection table appears at end of data sheet. max220/max232/max232a pin configuration and typical opera ting circuit downloaded from: http:///
maxim integrated | 2 www.maximintegrated.com max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers absolute maximum ratingsmax220/222/232a/233a/242/243 electrical characteristicsmax220/222/232a/233a/242/243 (v cc = +5v ?0%, c1?4 = 0.1??max220, c1 = 0.047?, c2?4 = 0.33?, t a = t min to t max ?unless otherwise noted.) (note 3) note 1: for the max220, v+ and v- can have a maximum magnitude of 7v, but their absolute difference cannot exceed 13v. note 2: input voltage measured with tout in high-impedance state, v shdn or v cc = 0v. stresses beyond those listed under ?bsolute maximum ratings?may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. (voltages referenced to gnd.)v cc ...........................................................................-0.3v to +6v v+ (note 1) ..................................................(v cc - 0.3v) to +14v v- (note 1) ..............................................................+0.3v to -14v input voltages tin .............................................................-0.3v to (v cc - 0.3v) rin (except max220) ........................................................?0v rin (max220) ....................................................................?5v tout (except max220) (note 2) ......................................?5v tout (max220)..............................................................?3.2v output voltages tout..................................................................................?5v rout........................................................-0.3v to (v cc + 0.3v) driver/receiver output short circuited to gnd.........continuous continuous power dissipation (t a = +70?) 16-pin plastic dip (derate 10.53mw/? above +70?)..842mw 18-pin plastic dip (derate 11.11mw/? above +70?)..889mw 20-pin plastic dip (derate 8.00mw/? above +70?) ..440mw 16-pin narrow so (derate 8.70 mw/? above +70?) ...696mw 16-pin wide so (derate 9.52mw/? above +70?)......762mw 18-pin wide so (derate 9.52mw/? above +70?)......762mw 20-pin wide so (derate 10.00mw/? above +70?)....800mw 20-pin ssop (derate 8.00mw/? above +70?) ..........640mw 16-pin cerdip (derate 10.00mw/? above +70?).....800mw 18-pin cerdip (derate 10.53mw/? above +70?).....842mw operating temperature ranges max2_ _ac_ _, max2_ _c_ _ .............................0? to +70? max2_ _ae_ _, max2_ _e_ _ ..........................-40? to +85? max2_ _am_ _, max2_ _m_ _ .......................-55? to +125? storage temperature range .............................-65? to +160? lead temperature (soldering, 10s) .................................+300? soldering temperature (reflow) 20 pdip (p20m+1) .......................................................+225? all other lead(pb)-free packages.................................+260? all other packages containing lead(pb) ......................+240? parameter conditions min tp max units rs-232 transmitters output voltage swing all transmitter outputs loaded with 3k to gnd 5 8 v input logic-low voltage 1.4 0.8 v all devices except max220 2 1.4 input logic-high voltage max220: v cc = +5.0v 2.4 v all except max220, normal operation 5 40 logic pullup/lnput current v shdn = 0v, max222/max242, shutdown, max220 0.01 1 a v cc = +5.5v, v shdn = 0v, v out = 15v, max222/max242 0.01 10 v out = 15v 0.01 10 output leakage current v cc = v shdn = 0v max220, v out = 12v 25 a data rate 200 116 kbps transmitter output resistance v cc = v+ = v- = 0v, v out = 2v 300 10m v out = 0v 7 22 output short-circuit current v out = 0v max220 60 ma rs-232 receivers 30 rs-232 input voltage operating range max220 25 v all except max243 r2in 0.8 1.3 rs-232 input threshold low v cc = +5v max243 r2in (note 4) -3 v all except max243 r2in 1.8 2.4 rs-232 input threshold high v cc = +5v max243 r2in (note 4) -0.5 -0.1 v downloaded from: http:///
max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers maxim integrated | 3 www.maximintegrated.com electrical characteristicsmax220/222/232a/233a/242/243 (continued) (v cc = +5v ?0%, c1?4 = 0.1??max220, c1 = 0.047?, c2?4 = 0.33?, t a = t min to t max ?unless otherwise noted.) (note 3) parameter conditions min tp max units all except max220/max243, v cc = +5v, no hysteresis in shutdown 0.2 0.5 1.0 max220 0.3 rs-232 input hysteresis max243 1 v 3 5 7 rs-232 input resistance t a = +25c (max220) 3 5 7 k i out = 3.2ma 0.2 0.4 ttl/cmos output voltage low i out = 1.6ma (max220) 0.4 v ttl/cmos output voltage high i out = -1.0ma 3.5 v cc - 0.2 v sourcing v out = v gnd -2 -10 ttl/cmos output short-circuit current sinking v out = v cc 10 30 ma ttl/cmos output leakage current v shdn = v cc or v en = v cc (v shdn = 0v for max222), 0v v out v cc 0.05 10 a en input threshold low max242 1.4 0.8 v en input threshold high max242 2.0 1.4 v supply voltage range 4.5 5.5 v max220 0.5 2 no load max222/max232a/max233a/ max242/max243 4 10 max220 12 v cc supply current (v shdn = v cc ), figures 5, 6, 11, 19 3k load both inputs max222/max232a/max233a/ max242/max243 15 ma t a = +25c 0.1 10 t a = 0c to +70c 2 50 t a = -40c to +85c 2 50 shutdown supply current max222/ max242 t a = -55c to +125c 35 100 a shdn input leakage current max222/max242 1 a shdn threshold low max222/max242 1.4 0.8 v shdn threshold high max222/max242 2.0 1.4 v max222/max232a/ max233/max242/max243 6 12 30 transition slew rate c l = 50pf to 2500pf, r l = 3k to 7k , v cc = +5v, t a = +25c, measured from +3v to -3v or -3v to +3v max220 1.5 3 30.0 v/s max222/max232a/ max233/max242/max243 1.3 3.5 t phlt , figure 1 max220 4 10 max222/max232a/ max233/max242/max243 1.5 3.5 transmitter propagation delay tll to rs-232 (normal operation) t plht , figure 1 max220 5 10 s downloaded from: http:///
maxim integrated | 4 www.maximintegrated.com max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers typical operating characteristics max220/max222/max232a/max233a/max242/max243 10 8 -10 0 5 15 25 output voltage vs. load current -4-6 -8 -2 64 2 max220-01 load current (ma) output voltage (v) 10 0 20 0.1 f either v+ or v- loaded v cc = +5v no load ontransmitter outputs (except max220, max233a) v- loaded, no load on v+ v+ loaded, no load on v- 1 f 1 f 0.1 f 11 10 4 010 40 60 available output current vs. data rate 65 7 98 max220-02 data rate (kb/s) output current (ma) 20 30 50 output load currentflows from v+ to v- v cc = +5.25v all caps1 f all caps0.1 f v cc = +4.75v +10v -10v max222/max242 on-time exiting shutdown +5v +5v 0v 0v max220-03 500 s/div v+, v- voltage (v) 1 f caps v+ v+ v- v- shdn 0.1 f caps 1 f caps 0.1 f caps electrical characteristicsmax220/222/232a/233a/242/243 (continued) (v cc = +5v ?0%, c1?4 = 0.1??max220, c1 = 0.047?, c2?4 = 0.33?, t a = t min to t max ?unless otherwise noted.) (note 3) parameter conditions min tp max units max222/max232a/max233/ max242/max243 0.5 1 t phlr , figure 2 max220 0.6 3 max222/max232a/max233/ max242/max243 0.6 1 receiver propagation delay rs- 232 to tll (normal operation) t plhr , figure 2 max220 0.8 3 s t phls , figure 2 max242 0.5 10 receiver propagation delay rs- 232 to tll (shutdown) t phls , figure 2 max242 2.5 10 s receiver-output enable time t er max242, figure 3 125 500 ns receiver-output disable time t dr max242, figure 3 160 500 ns transmitter-output enable time ( shdn goes high) t et max222/max242, 0.1f caps (includes charge-pump start-up), figure 4 250 s transmitter-output disable time ( shdn goes low) t dt max222/max242, 0.1f caps, figure 4 600 ns max222/max232a/max233/ max242/max243 300 transmitter + to - propagation delay difference (normal operation) t phlt - t plht max220 2000 ns max222/max232a/max233/ max242/max243 100 receiver + to - propagation delay difference (normal operation) t phlr - t plhr max220 225 ns note 3: all units are production tested at hot. specifications over temperature are guaranteed by design. note 4: max243 r2out is guaranteed to be low when r2in 0v or is unconnected. downloaded from: http:///
(voltages referenced to gnd.)v cc ...........................................................................-0.3v to +6v v+ ................................................................(v cc - 0.3v) to +14v v- ............................................................................+0.3v to -14v input voltages tin ............................................................-0.3v to (v cc + 0.3v) rin .....................................................................................?0v output voltages tout ..................................................(v+ + 0.3v) to (v- - 0.3v) rout........................................................-0.3v to (v cc + 0.3v) short-circuit duration, tout to gnd ........................continuous continuous power dissipation (t a = +70?) 14-pin plastic dip (derate 10.00mw/? above +70?)....800mw 16-pin plastic dip (derate 10.53mw/? above +70?)....842mw 20-pin plastic dip (derate 11.11mw/? above +70?)....889mw 24-pin narrow plastic dip (derate 13.33mw/? above +70?) ..........1.07w 24-pin plastic dip (derate 9.09mw/? above +70?)......500mw 16-pin wide so (derate 9.52mw/? above +70?).........762mw 20-pin wide so (derate 10.00mw/? above +70?).......800mw 24-pin wide so (derate 11.76mw/? above +70?).......941mw 28-pin wide so (derate 12.50mw/? above +70?) .............1w 44-pin plastic fp (derate 11.11mw/? above +70?) .....889mw 14-pin cerdip (derate 9.09mw/? above +70?) ..........727mw 16-pin cerdip (derate 10.00mw/? above +70?) ........800mw 20-pin cerdip (derate 11.11mw/? above +70?) ........889mw 24-pin narrow cerdip (derate 12.50mw/? above +70?) ..............1w 24-pin sidebraze (derate 20.0mw/? above +70?)..........1.6w 28-pin ssop (derate 9.52mw/? above +70?).............762mw operating temperature ranges max2 _ _ c _ _......................................................0? to +70? max2 _ _ e _ _ ...................................................-40? to +85? max2 _ _ m _ _ ......................................................-55c to +125? storage temperature range .............................-65? to +160? lead temperature (soldering, 10s) .................................+300? soldering temperature (reflow) 20 pdip (p20m+1) .........................................................+225? 24 pdip (p24m-1) ..........................................................+225? all other lead(pb)-free packages...................................+260? all other packages containing lead(pb) ........................... +240? max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers maxim integrated | 5 www.maximintegrated.com absolute maximum ratingsmax223/max230Cmax241 electrical characteristicsmax223/max230Cmax241 (max223/230/232/234/236/237/238/240/241, v cc = +5v ?0%; max233/max235, v cc = +5v ?%?c1?4 = 1.0?; max231/max239, v cc = +5v ?0%; v+ = +7.5v to +13.2v; t a = t min to t max ; unless otherwise noted.) (note 5) stresses beyond those listed under ?bsolute maximum ratings?may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. conditions min typ max units output voltage swing all transmitter outputs loaded with 3k to ground ?.0 ?.3 v v cc supply current no load,t a = +25? 51 0 ma 71 5 0.4 1 v+ supply current 1.8 5 ma 51 5 shutdown supply current t a = +25? 15 50 v input logic-high voltage tin 2.0 en, shdn (max223); en , shdn (max230/235/236/240/241) 2.4 logic pullup current v tin =0v 1.5 200 receiver input voltageoperating range -30 +30 v ? ? 11 0 v input logic-low voltage tin, en, shdn (max233); en , shdn (max230/235?41) 0.8 max231/239 max223/230/234?38/240/241 max232/233 parameter max239 max230/235/236/240/241 max231 max223 downloaded from: http:///
maxim integrated | 6 www.maximintegrated.com max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers ma v 0.8 1.2 parameter min typ max units conditions normal operation v shdn = 5v (max223) v shdn = 0v (max235/236/240/241) 1.7 2.4 rs-232 input logic-low voltage t a = +25?, v cc = +5v 0.6 1.5 v rs-232 input logic-high voltage t a = +25?, v cc = +5v shutdown (max223) v shdn = 0v, v en = +5v (r4in?r5in) 1.5 2.4 electrical characteristicsmax223/max230Cmax241 (continued) (max223/230/232/234/236/237/238/240/241, v cc = +5v ?0%; max233/max235, v cc = +5v ?%?c1?4 = 1.0?; max231/max239, v cc = +5v ?0%; v+ = +7.5v to +13.2v; t a = t min to t max ; unless otherwise noted.) (note 5) shutdown (max223) v shdn = 0v, v en = +5v (r4in, r5in) normal operation v shdn = +5v (max223) v shdn = 0v (max235/236/240/241) rs-232 input hysteresis v cc = +5v, no hysteresis in shutdown 0.2 0.5 1.0 v rs-232 input resistance t a = +25?, v cc = +5v 357 k ttl/cmos output voltage low i out = 1.6ma (max231/232/233, i out = 3.2ma) 0.4 v ttl/cmos output voltage high i out = -1ma 3.5 v cc - 0.4 v ttl/cmos output leakage current 0v r out v cc ; v en = 0v (max223); v en = v cc (max235?41) ?.05 ?0 ? max223 600 ns receiver output enable time normal operation max235/236/239/240/241 400 max223 900 ns receiver output disable time normal operation max235/236/239/240/241 250 normal operation 0.5 10 ? v shdn = 0v (max223) 44 0 propagation delay rs-232 in tottl/cmos out, c l = 150pf 64 0 3 5.1 30 v/? max231/max232/max233, t a = +25?, v cc = +5v, r l = 3k to 7k , c l = 50pf to 2500pf, measured from +3v to -3v or -3v to +3v 43 0 transmitter output resistance v cc = v+ = v- = 0v, v out = ?v 300 transmitter output short-circuitcurrent ?0 ma t phls t plhs transition region slew rate max223/max230/max234?41, t a = +25?, v cc = +5v, r l = 3k to 7k ?c l = 50pf to 2500pf, measured from +3v to -3v or -3v to +3v note 5: all units are production tested at hot except for the max240, which is production tested at t a = +25?. specifications over temperature are guaranteed by design. downloaded from: http:///
maxim integrated | 7 www.maximintegrated.com max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers 8.56.5 4.5 5.5 transmitter output voltage (v oh ) vs. v cc 7.0 8.0 max220-04 v cc (v) v oh (v) 5.0 7.5 1 transmitterloaded 3 trans-mitters loaded 4 transmittersloaded 2 transmittersloaded t a = +25 c c1?c4 = 1 f transmitterloads = 3k || 2500pf 7.46.0 0 2500 transmitter output voltage (v oh ) vs. load capacitance at different data rates 6.46.2 7.27.0 max220-05 load capacitance (pf) v oh (v) 1500 1000 500 2000 6.86.6 160kb/s80kb/s 20kb/s t a = +25 c v cc = +5v 3 transmitters loadedr l = 3k c1?c4 = 1 f 12.0 4.0 0 2500 transmitter slew rate vs. load capacitance 6.05.0 11.0 9.0 10.0 max220-06 load capacitance (pf) slew rate (v/ s) 1500 1000 500 2000 8.07.0 t a = +25 c v cc = +5v loaded, r l = 3k c1?c4 = 1 f 1 transmitter loaded 2 transmitters loaded 3 transmitters loaded 4 transmitters loaded -6.0-9.0 4.5 5.5 transmitter output voltage (v ol ) vs. v cc -8.0-8.5 -6.5-7.0 max220-07 v cc (v) v ol (v) 5.0 -7.5 4 trans-mitters loaded t a = +25 c c1?c4 = 1 f transmitterloads = 3k || 2500pf 1 trans-mitter loaded 2 trans-mitters loaded 3 trans-mitters loaded -6.0-7.6 0 2500 transmitter output voltage (v ol ) vs. load capacitance at different data rates -7.0-7.2 -7.4 -6.2-6.4 max220-08 load capacitance (pf) v ol (v) 1500 1000 500 2000 -6.6-6.8 160kb/s80kb/s 20kb/s t a = +25 c v cc = +5v 3 transmitters loadedr l = 3k c1?c4 = 1 f 10 -10 0 5 10 15 20 25 30 35 40 45 50 transmitter output voltage (v+, v-) vs. load current -2-6 -4-8 86 max220-09 current (ma) v+, v- (v) 42 0 v+ and v-equally loaded v- loaded,no load on v+ t a = +25 c v cc = +5v c1?c4 = 1 f all transmitters unloaded v+ loaded,no load on v- typical operating characteristics max223/max230Cmax241 *shutdown polarity is reversed for non max241 parts v+, v- when exiting shutdown (1 f capacitors) max220-13 v shdn * v- o v+ 500ms/div downloaded from: http:///
maxim integrated | 8 www.maximintegrated.com max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers input logic-low voltage absolute maximum ratingsmax225/max244Cmax249 electrical characteristicsmax225/max244Cmax249 (max225, v cc = +5.0v ?%; max244?ax249, v cc = +5.0v ?0%, external capacitors c1?4 = 1?; t a = t min to t max ; unless otherwise noted.) (note 7) stresses beyond those listed under ?bsolute maximum ratings?may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. (voltages referenced to gnd.)supply voltage (v cc ) ...............................................-0.3v to +6v input voltages tin? ena , enb , enr , ent , enra , enrb , enta , entb ..................................-0.3v to (v cc + 0.3v) rin .....................................................................................?5v tout (note 6)....................................................................?5v rout........................................................-0.3v to (v cc + 0.3v) short circuit duration (one output at a time) tout to gnd ...........................................................continuous rout to gnd...........................................................continuous continuous power dissipation (t a = +70?) 28-pin wide so (derate 12.50mw/? above +70?) .............1w 40-pin plastic dip (derate 11.11mw/? above +70?) ...611mw 44-pin plcc (derate 13.33mw/? above +70? ) ...........1.07w operating temperature ranges max225c_ _, max24_c_ _ ..................................0? to +70? max225e_ _, max24_e_ _ ...............................-40? to +85? storage temperature range .............................-65? to +160? lead temperature (soldering,10s)) .................................+300? soldering temperature (reflow) 40 pdip (p40m-2) ..........................................................+225? all other lead(pb)-free packages...................................+260? all other packages containing lead(pb) ........................+240? v cc = 0v, v out = ?5v ? tables 1a?d ?.01 ?5 normal operation shutdown tables 1a?d, normal operation all transmitter outputs loaded with 3k to gnd v ena , v enb , v ent , v enta , v entb = v cc, v out = ?5v v rs-232 input hysteresis rs-232 input logic-low voltage v v ? ?.5 output voltage swing output leakage current (shutdown) ?.01 ?5 300 10m v cc = v+ = v- = 0v, v out = ?v (note 8) transmitter output resistance ? parameter ?.05 ?.10 min typ max units normal operation, outputs disabled,tables 1a?d, 0v v out v cc , v enr_ = v cc ttl/cmos output leakage current 10 30 sinking v out = v cc ma -2 -10 sourcing v out = v gnd v 3.5 v cc - 0.2 i out = -1.0ma ttl/cmos output voltage high v 0.2 0.4 i out = 3.2ma ttl/cmos output voltage low k 357 0.2 0.5 1.0 v cc = +5v 1.4 0.8 v ttl/cmos output short-circuit current v 1.8 2.4 0.8 1.3 v cc = +5v rs-232 input resistance v ?5 rs-232 input voltage operating range ma ? ?0 v out = 0v output short-circuit current kbps 120 64 data rate conditions v cc = +5v ? ?.01 ? logic pullup/lnput current 10 50 tables 1a?d rs-232 input logic-high voltage v 2 1.4 input logic-high voltage rs-232 transmitters rs-232 receivers note 6: input voltage measured with transmitter output in a high-impedance state, shutdown, or v cc = 0v. downloaded from: http:///
max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers maxim integrated | 9 www.maximintegrated.com supply voltage range 4.75 5.25 v transmitter enable time max225 10 20 t et no load max244?ax249 11 30 51 03 0 max225 40 v cc supply current (normal operation) 3k loads on all outputs max244?ax249 57 ma transition slew rate 82 5 c l = 50pf to 2500pf, r l = 3k to 7k , v cc = +5v, t a = +25c, measured from +3v to -3v or -3v to +3v t a = t min to t max conditions 50 v/? max246?ax249 (excludes charge-pump startup) shutdown supply current ? 5 t phlt , figure 1 1.3 3.5 ? t plht , figure 1 1.5 3.5 transmitter disable time transmitter propagation delaytll to rs-232 (normal operation) ? t dt , figure 4 100 ns transmitter + to - propagation delay difference (normal operation) t phlt - t plht units min typ max 350 parameter ns receiver + to - propagation delay difference (normal operation) t phlr - t plhr 350 ns 4.5 5.5 max244?ax249 max225 leakage current ? logic-low voltage 1.4 0.8 control input logic-high voltage 2.4 1.4 v ? t a = +25? t phlr , figure 2 0.6 1.5 t plhr , figure 2 0.6 1.5 receiver propagation delaytll to rs-232 (normal operation) ? t phls , figure 2 0.6 10 t plhs , figure 2 3.0 10 receiver propagation delay tll to rs-232 (low-power mode) ? receiver-output enable time t er , figure 3 100 500 ns receiver-output disable time t dr , figure 3 100 500 ns max225/max245?ax249(includes charge-pump startup) 10 ms power supply and control logic ac characteristics note 7: all units production tested at hot. specifications over temperature are guaranteed by design. note 8: the 300 minimum specification complies with eia/tia-232e, but the actual resistance when in shutdown mode or v cc = 0v is 10m as is implied by the leakage specification. electrical characteristicsmax225/max244Cmax249 (continued) (max225, v cc = +5.0v ?%; max244?ax249, v cc = +5.0v ?0%, external capacitors c1?4 = 1?; t a = t min to t max ; unless otherwise noted.) (note 7) downloaded from: http:///
typical operating characteristics max225/max244Cmax249 18 2 012345 transmitter slew rate vs. load capacitance 86 4 16 max220-10 load capacitance (nf) transmitter slew rate (v/ s) 1412 10 v cc = +5v external power supply1 f capacitors 40kb/s data rate 8 transmitters loaded with 3k 10 -10 0 5 10 15 20 25 30 35 output voltage vs. load current for v+ and v- -2-4 -6 -8 8 max220-11 load current (ma) output voltage (v) 64 2 0 v+ and v- loaded either v+ or v- loaded v+ and v- loaded v cc = +5v external charge pump1 f capacitors 8 transmittersdriving 5k and 2000pf at 20kb/s v- loaded v+ loaded 9.05.0 01 2 345 transmitter output voltage (v+, v-) vs. load capacitance at different data rates 6.05.5 8.5 max220-12 load capacitance (nf) v+, v- (v) 8.0 7.5 7.06.5 v cc = +5v with all transmitters driven loaded with 5k 40kb/s 60kb/s 100kb/s 200kb/s all capacitiors 1 f 10kb/s 20kb/s maxim integrated | 10 www.maximintegrated.com max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers downloaded from: http:///
max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers maxim integrated | 11 www.maximintegrated.com inputoutput +3v v+ 0vv- 0v t plht t phlt t phlr t phls t plhr t plhs 50% v cc 50% +3v 50% input output *except for r2 on the max243 where -3v is used. 0v* 50% gnd figure 1. transmitter propagation-delay timing figure 2. receiver propagation-delay timing en r x in a) test circuit b) enable timingc) disable timing en input receiver outputs r x out r x 1k 0v +3v en en +0.8v +3.5v output enable time (t er ) v cc - 2v v ol + 0.5v v oh - 0.5v output disable time (t dr ) v cc - 2v +3v0v 150pf en input v oh receiver outputs v ol 1 or 0 t x 3k 50pf -5v +5v output disable time (t dt ) v+ shdn +3v 0v v- 0v a) timing diagram b) test circuit figure 3. receiver-output enable and disable timing figure 4. transmitter-output disable timing test circuits/timing diagrams downloaded from: http:///
maxim integrated | 12 www.maximintegrated.com max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers ent enr operation status transmitters receivers 0 0 normal operation all active all active 0 1 normal operation all active all high-z 1 0 shutdown all high-z all low-power receive mode 1 1 shutdown all high-z all high-z table 1a. max245 control pin configurations ent enr operation status transmitters receivers ta1?a4 tb1?b4 ra1?a5 rb1?b5 0 0 normal operation all active all active all active all active 0 1 normal operation all active all active ra1?a4 high-z,ra5 active rb1?b4 high-z,rb5 active 1 0 shutdown all high-z all high-z all low-powerreceive mode all low-powerreceive mode 1 1 shutdown all high-z all high-z ra1?a4 high-z,ra5 low-power receive mode rb1?b4 high-z,rb5 low-power receive mode table 1b. max245 control pin configurations table 1c. max246 control pin configurations ena enb operation status transmitters receivers ta1?a4 tb1?b4 ra1?a5 rb1?b5 0 0 normal operation all active all active all active all active 0 1 normal operation all active all high-z all active rb1?b4 high-z,rb5 active 1 0 shutdown all high-z all active ra1?a4 high-z,ra5 active all active 1 1 shutdown all high-z all high-z ra1?a4 high-z,ra5 low-power receive mode rb1?b4 high-z,ra5 low-power receive mode control pin configuration tables downloaded from: http:///
max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers maxim integrated | 13 www.maximintegrated.com ta1?a4 tb1?b4 ra1?a4 rb1?b4 0 0 0 0 normal operation all active all active all active all active 0 0 0 1 normal operation all active all active all active all high-z, exceptrb5 stays active on max247 0 0 1 0 normal operation all active all active all high-z all active 0 0 1 1 normal operation all active all active all high-z all high-z, exceptrb5 stays active on max247 0 1 0 0 normal operation all active all high-z all active all active 0 1 0 1 normal operation all active all high-z all active all high-z, exceptrb5 stays active on max247 0 1 1 0 normal operation all active all high-z all high-z all active 0 1 1 1 normal operation all active all high-z all high-z all high-z, exceptrb5 stays active on max247 1 0 0 0 normal operation all high-z all active all active all active 1 0 0 1 normal operation all high-z all active all active all high-z, exceptrb5 stays active on max247 1 0 1 0 normal operation all high-z all active all high-z all active 1 0 1 1 normal operation all high-z all active all high-z all high-z, exceptrb5 stays active on max247 1 1 0 0 shutdown all high-z all high-z low-powerreceive mode low-powerreceive mode 1 1 0 1 shutdown all high-z all high-z low-powerreceive mode all high-z, exceptrb5 stays active on max247 1 1 1 0 shutdown all high-z all high-z all high-z low-powerreceive mode 1 1 1 1 shutdown all high-z all high-z all high-z all high-z, exceptrb5 stays active on max247 table 1d. max247/max248/max249 control pin configurations max248 operation status enrb max247 ta1?a4 tb1?b4 ra1?a4 rb1?b5 transmitters enra entb enta max249 ta1?a3 tb1?b3 ra1?a5 rb1?b5 receivers downloaded from: http:///
maxim integrated | 14 www.maximintegrated.com max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers detailed description the max220?ax249 contain four sections: dualcharge-pump dc-dc voltage converters, rs-232 dri- vers, rs-232 receivers, and receiver and transmitter enable control inputs. dual charge-pump voltage converter the max220?ax249 have two internal charge-pumps that convert +5v to ?0v (unloaded) for rs-232 driver operation. the first converter uses capacitor c1 to dou- ble the +5v input to +10v on c3 at the v+ output. the second converter uses capacitor c2 to invert +10v to -10v on c4 at the v- output. a small amount of power may be drawn from the +10v (v+) and -10v (v-) outputs to power external circuitry (see the typical operating characteristics section), except on the max225 and max245?ax247, wherethese pins are not available. v+ and v- are not regulated, so the output voltage drops with increasing load current. do not load v+ and v- to a point that violates the mini- mum ?v eia/tia-232e driver output voltage when sourcing current from v+ and v- to external circuitry. when using the shutdown feature in the max222, max225, max230, max235, max236, max240, max241, and max245?ax249, avoid using v+ and v- to power external circuitry. when these parts are shut down, v- falls to 0v, and v+ falls to +5v. for applica- tions where a +10v external supply is applied to the v+ pin (instead of using the internal charge pump to gen- erate +10v), the c1 capacitor must not be installed and the shdn pin must be connected to v cc . this is because v+ is internally connected to v cc in shutdown mode. rs-232 drivers the typical driver output voltage swing is ?v when loaded with a nominal 5k rs-232 receiver and v cc = +5v. output swing is guaranteed to meet the eia/tia-232e and v.28 specification, which calls for ?v mini- mum driver output levels under worst-case conditions. these include a minimum 3k load, v cc = +4.5v, and maximum operating temperature. unloaded driver out-put voltage ranges from (v+ -1.3v) to (v- +0.5v). input thresholds are both ttl and cmos compatible. the inputs of unused drivers can be left unconnected since 400k input pullup resistors to v cc are built in (except for the max220). the pullup resistors force theoutputs of unused drivers low because all drivers invert. the internal input pullup resistors typically source 12?, except in shutdown mode where the pullups are dis- abled. driver outputs turn off and enter a high-imped- ance state?here leakage current is typically microamperes (maximum 25?)?hen in shutdown mode, in three-state mode, or when device power isremoved. outputs can be driven to ?5v. the power- supply current typically drops to 8? in shutdown mode. the max220 does not have pullup resistors to force the outputs of the unused drivers low. connect unused inputs to gnd or v cc . the max239 has a receiver three-state control line, andthe max223, max225, max235, max236, max240, and max241 have both a receiver three-state control line and a low-power shutdown control. table 2 shows the effects of the shutdown control and receiver three- state control on the receiver outputs. the receiver ttl/cmos outputs are in a high-imped-ance, three-state mode whenever the three-state enable line is high (for the max225/max235/max236/max239 max241), and are also high-impedance whenever the shutdown control line is high. when in low-power shutdown mode, the driver outputs are turned off and their leakage current is less than 1? with the driver output pulled to ground. the driver output leakage remains less than 1?, even if the transmitter output is backdriven between 0v and (v cc + 6v). below -0.5v, the transmitter is diode clamped to ground with1k series impedance. the transmitter is also zener clamped to approximately v cc + 6v, with a series impedance of 1k . the driver output slew rate is limited to less than 30v/?as required by the eia/tia-232e and v.28 specifica- tions. typical slew rates are 24v/? unloaded and 10v/? loaded with 3 and 2500pf. rs-232 receivers eia/tia-232e and v.28 specifications define a voltage level greater than 3v as a logic 0, so all receivers invert. input thresholds are set at 0.8v and 2.4v, so receivers respond to ttl level inputs as well as eia/tia-232e and v.28 levels. part shdn en en(r) receivers max223 __ lowhigh high xlow high high impedanceactive high impedance max225 __ __ high impedanceactive __ max235max236 max240 lowlow high __ __ lowhigh x high impedanceactive high impedance table 2. three-state control of receivers lowhigh shdn __ downloaded from: http:///
max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers maxim integrated | 15 www.maximintegrated.com the receiver inputs withstand an input overvoltage upto ?5v and provide input terminating resistors with nominal 5k values. the receivers implement type 1 interpretation of the fault conditions of v.28 andeia/tia-232e. the receiver input hysteresis is typically 0.5v with a guaranteed minimum of 0.2v. this produces clear out- put transitions with slow-moving input signals, even with moderate amounts of noise and ringing. the receiver propagation delay is typically 600ns and is independent of input swing direction. low-power receive mode the low-power receive mode feature of the max223, max242, and max245?ax249 puts the ic into shut- down mode but still allows it to receive information. this is important for applications where systems are periodi- cally awakened to look for activity. using low-power receive mode, the system can still receive a signal that will activate it on command and prepare it for communi- cation at faster data rates. this operation conserves system power. negative thresholdmax243 the max243 is pin compatible with the max232a, differ- ing only in that rs-232 cable fault protection is removed on one of the two receiver inputs. this means that control lines such as cts and rts can either be driven or left unconnected without interrupting communication. different cables are not needed to interface with different pieces of equipment. the input threshold of the receiver without cable fault protection is -0.8v rather than +1.4v. its output goes positive only if the input is connected to a control line that is actively driven negative. if not driven, it defaults to the 0 or ?k to send?state. normally?the max243? other receiver (+1.4v threshold) is used for the data line (td or rd)?while the negative threshold receiver is con- nected to the control line (dtr?dts?cts?rts, etc.). other members of the rs-232 family implement the optional cable fault protection as specified by eia/tia- 232e specifications. this means a receiver output goes high whenever its input is driven negative?left uncon- nected?or shorted to ground. the high output tells the serial communications ic to stop sending data. to avoid this?the control lines must either be driven or connected with jumpers to an appropriate positive volt- age level. shutdownmax222Cmax242 on the max222?max235?max236?max240?and max241?all receivers are disabled during shutdown. on the max223 and max242?two receivers continue to operate in a reduced power mode when the chip is in shutdown. under these conditions?the propagation delay increases to about 2.5? for a high-to-low input transition. when in shutdown, the receiver acts as a cmos inverter with no hysteresis. the max223 and max242 also have a receiver output enable input ( en for the max242 and en for the max223) that allowsreceiver output control independent of shdn (shdn for max241). with all other devices? shdn (shdn for max241) also disables the receiver outputs. the max225 provides five transmitters and five receivers?while the max245 provides ten receivers and eight transmitters. both devices have separate receiver and transmitter-enable controls. the charge pumps turn off and the devices shut down when a logic high is applied to the ent input. in this state, the supply cur- rent drops to less than 25? and the receivers continue to operate in a low-power receive mode. driver outputs enter a high-impedance state (three-state mode). on the max225?all five receivers are controlled by the enr input. on the max245?eight of the receiver out- puts are controlled by the enr input?while the remain- ing two receivers (ra5 and rb5) are always active.ra1?a4 and rb1?b4 are put in a three-state mode when enr is a logic high. receiver and transmitter enable control inputs the max225 and max245?ax249 feature transmitter and receiver enable controls. the receivers have three modes of operation: full-speed receive (normal active)?three-state (disabled)?and low- power receive (enabled receivers continue to function at lower data rates). the receiver enable inputs control the full-speed receive and three-state modes. the transmitters have two modes of operation: full-speed transmit (normal active) and three-state (disabled). the transmitter enable inputs also control the shutdown mode. the device enters shutdown mode when all transmitters are disabled. enabled receivers function in the low-power receive mode when in shutdown. downloaded from: http:///
maxim integrated | 16 www.maximintegrated.com max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers tables 1a?d define the control states. the max244has no control pins and is not included in these tables. the max246 has ten receivers and eight drivers with two control pins, each controlling one side of the device. a logic high at the a-side control input ( ena ) causes the four a-side receivers and drivers to go intoa three-state mode. similarly, the b-side control input ( enb ) causes the four b-side drivers and receivers to go into a three-state mode. as in the max245, one a-side and one b-side receiver (ra5 and rb5) remain active at all times. the entire device is put into shut- down mode when both the a and b sides are disabled ( ena = enb = +5v). the max247 provides nine receivers and eight driverswith four control pins. the enra and enrb receiver enable inputs each control four receiver outputs. theenta and entb transmitter enable inputs each control four drivers. the ninth receiver (rb5) is always active.the device enters shutdown mode with a logic high on both enta and entb . the max248 provides eight receivers and eight driverswith four control pins. the enra and enrb receiver enable inputs each control four receiver outputs. theenta and entb transmitter enable inputs control four drivers each. this part does not have an always-activereceiver. the device enters shutdown mode and trans- mitters go into a three-state mode with a logic high on both enta and entb . the max249 provides ten receivers and six drivers withfour control pins. the enra and enrb receiver enable inputs each control five receiver outputs. the enta and entb transmitter enable inputs control three dri- vers each. there is no always-active receiver. thedevice enters shutdown mode and transmitters go into a three-state mode with a logic high on both enta and entb . in shutdown mode, active receivers operate in a low-power receive mode at data rates up to 20kb/s. applications information figures 5 through 25 show pin configurations and typi-cal operating circuits. in applications that are sensitive to power-supply noise, v cc should be decoupled to ground with a capacitor of the same value as c1 andc2 connected as close as possible to the device. downloaded from: http:///
max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers maxim integrated | 17 www.maximintegrated.com top view 1615 14 13 12 11 10 9 12 3 4 5 6 7 8 v cc gndt1out r1in c2+ c1- v+ c1+ + max220max232 max232a r1out t1int2in r2out r2in t2out v- c2- dip/so v+ v- 2 +10v c1+ c1c2 13 4 5 1110 12 9 6 14 7 13 8 t1in r1out t2in r2out t1out r1in t2out r2in +5v input c2+ -10v c4 rs-232outputs rs-232inputs ttl/cmos inputs ttl/cmos outputs gnd 15 5k 5k 400k 400k +5v +5v +10v to -10v voltage inverter +5v to +10v voltage doubler 16 c3 c5 capacitance ( f) devicemax220 max232 max232a c1 0.047 1.00.1 c2 0.33 1.00.1 c3 0.33 1.00.1 c4 0.33 1.00.1 c5 0.33 1.00.1 c2- c1- v cc 5k dip/so 1817 16 15 14 13 12 11 12 3 4 5 6 7 8 shdnv cc gnd t1out c1- v+ c1+ (n.c.) en r1inr1out t1in t2in t2out v- c2- c2+ 10 9 r2out r2in max222max242 2019 18 17 16 15 14 13 12 3 4 5 6 7 8 shdnv cc gnd t1out c1- v+ c1+ (n.c.) en n.c.r1in r1out n.c. t2out v- c2- c2+ 12 11 9 10 t1int2in r2out r2in max222max242 ssop ( ) are for max222 only.pin numbers in typical operating circuit are for dip/so packages only. v+ v- 3 +10v c1c2 2 4 56 1211 13 7 158 14 9 t1in r1out t2in r2out t1out (except max220)(except max220) r1in t2out r2in +5v input c2+ -10v c4 rs-232outputs rs-232inputs ttl/cmos inputs ttl/cmos outputs gnd 16 5k 400k 400k +5v +5v +10v to -10v voltage inverter v cc +5v to +10v voltage doubler 17 c3 c5 1 10 18 shdn en (n.c.) all capacitors = 0.1 f c2- c1+ c1- + + top view figure 5. max220/max232/max232a pin configuration and typical operating circuit figure 6. max222/max242 pin configurations and typical operating circuit downloaded from: http:///
maxim integrated | 18 www.maximintegrated.com max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers 1314 28 27 26 25 24 2322 21 12 3 4 5 6 7 8 v cc v cc v cc 400k 400k 400k 400k 400k t1out +5v +5v 0.1 f +5v 3 28 27 4 2524 23 26 56 7 22 gnd enr enr gnd 21 +5v +5v +5v t2outt3out t4out 5k 5k 5k 5k 5k 14 13 2 1 t5out t5out r1inr2in r3in r4in r5in t1in 1112 18 17 16 15 10 9 8 19 20 t2int3in t4in t5in ent r2out r3out r4out pins (enr, gnd, v cc , t5out) are internally connected. connect either or both externally. t5out is a single driver. r5out r1out v cc ent t3in t2in t1in enr enr t4int5in r4out r5out r3in r3out r2out r1out 20 19 1817 9 1011 12 r5inr4in t3out t4out t2out t1out r1in r2in so max225 1615 t5out max225 functional description5 receivers 5 transmitters 2 control pins 1 receiver enable (enr) 1 transmitter enable (ent) t5out gnd gnd top view + figure 7. max225 pin configuration and typical operating circuit downloaded from: http:///
max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers maxim integrated | 19 www.maximintegrated.com gnd 10 27 r3out 23 r4out r3inr4in 5k 5k 5 4 r2out r2in 5k rs-232inputs logic outputs rs-232outputs ttl/cmos inputs r2 8 9 r1out r1in 5k r1r3 r4 19 18 r5out r5in 5k r5 2 7 t1in t1out +5v 400k +5v 6 3 t2in t2out t2 400k 20 t3out 1 t3in +5v t3 400k c1+c1- 1.0 f 12 v cc +5v input 11 17 1.0 f 13 1.0 f +5v to +10v voltage doubler 26 1.0 f t1 28 21 t4in t4out +5v 400k t4 14 c2+c2- 15 1.0 f 16 +10v to -10v voltage inverter v+ 22 en (en) 24 25 2827 26 25 24 23 22 21 20 19 18 17 16 15 12 3 4 5 6 7 8 9 1011 12 13 14 t4outr3in r3out shdn (shdn) r4in* c2+ r4out*t4in t3in r5out* r5in* v- c2- c1- v+ c1+ v cc gnd r1in r1out t1in t2in r2out r2in t2out t1out t3out wide so/ ssop max223max241 en (en) shdn (shdn) *r4 and r5 in max223 remain active in shutdown.note: pin labels in ( ) are for max241. v- + top view figure 8. max223/max241 pin configuration and typical operating circuit downloaded from: http:///
maxim integrated | 20 www.maximintegrated.com max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers 2019 18 17 16 15 14 13 12 3 4 5 6 7 8 t5in n.c. shdn t2in t2out t1out t5outt4in t3in v- c1+ v cc gnd t1in 12 11 9 10 c2-c2+ c1- v+ dip/so max230 v+ v- 9 c1+c1- 8 1011 12 54 14 13 23 1 20 t3int4in t2int5in t1outt2out +5v input c2+c2- rs-232outputs ttl/cmos inputs gnd 6 400k +5v 400k +5v 400k +5v 400k +5v 400k +5v +10v to -10v voltage inverter v cc +5v to +10v voltage doubler 7 1.0 f 1.0 f 1.0 f 1.0 f 19 15 16 t3out t4out 18 x t1in t3outt4out t5out 17 1.0 f t2t3 t4 t5 n.c. shdn t1 + top view figure 9. max230 pin configuration and typical operating circuit v+ v- 14 c1+c1- 12 87 311 4 t2in t1in t1outt2out +5v input rs-232inputs ttl/cmos outputs gnd 12 (14) 5k 5k +12v to -12v voltage converter 13 (15) 1.0 f 1.0 f c2 1.0 f 400k +5v 400k +5v 6 9 10 r1inr2in r2out r1out 5 1615 14 13 12 11 10 9 12 3 4 5 6 7 8 v+v cc gnd t1out t2out v- c- c+ max231 r1in r1outt1in n.c. n.c. t2in r2out r2in so (12) rs-232outputs ttl/cmos inputs (11) (13) (10) v cc pin numbers in ( ) are for so package. 1413 12 11 10 9 8 1 23 45 6 7 v+v cc gndt1out t2out v- c- c+ max231 r1in r1out t1in t2in r2out r2in dip +7.5v to +12v (16) t1t2 r1r2 + + top view figure 10. max231 pin configurations and typical operating circuit downloaded from: http:///
max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers maxim integrated | 21 www.maximintegrated.com 21 5 18 t2in t1in t1outt2out +5v input rs-232inputs ttl/cmos outputs gnd gnd 69 400k +5v 400k +5v 5k 5k 7 20 3 4 r1inr2in r2out r1out 19 rs-232outputs ttl/cmos inputs v cc pin names in ( ) are for so package. 2019 18 17 16 15 14 13 12 3 4 5 6 7 8 r2in t2out v- r1in r1out t1in c2-c2+ v+ (c1-) c1- (c1+) (v+) c1+ v cc gnd t1out 12 11 9 10 v- (c2+)c2+ (c2-) (v-) cs- gnd dip/so max233 max233a t2in r2out c1+c1- v- v- v+ c2+ c2- cs- c2+ 8 (13) 13 (14)12 (10) 17 14 (8) 11 (12)15 16 10 (11) do not make connections to these pins internal -10v power supply internal +10v power supply 1.0 f top view + figure 11. max233/max233a pin configuration and typical operating circuit 1615 14 13 12 11 10 9 12 3 4 5 6 7 8 t3outt4out t4in t3in t1in t2in t2out t1out max234 v- c2-c2+ c1- v+ c1+ v cc gnd dip/so v+ v- 8 c1+c1- 1.0 f 1.0 f 1.0 f 79 1011 43 1314 12 12 16 15 t1in t3in t2in t4in t1outt3out t2outt4out +5v input c2- c2+ rs-232outputs ttl/cmos inputs gnd 5 +5v+5v +10v to -10v voltage inverter v cc +5v to +10v voltage doubler 6 +5v+5v 400k 400k 400k 400k 1.0 f 1.0 f t1t2 t4 t3 + top view figure 12. max234 pin configuration and typical operating circuit downloaded from: http:///
maxim integrated | 22 www.maximintegrated.com max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers 1.0 f +5v input gnd 11 6 23 5 r2out rs-232inputs ttl/cmos outputs 14 1321 r5out 5k 17 18 r4out 5k 24 r3out 5k 2423 22 21 20 19 18 17 12 3 4 5 6 7 8 r3inr3out t5in shdn t2out t1out t3out t4out ent5out r4in r4out t1in t2in r2out r2in 1615 14 13 9 1011 12 t4int3in r5out r5in v cc gnd r1in r1out dip max235 5k 91 0 r1out r1inr2in r3in r4in r5in 5k 7 15 3 4 t2in t3out rs-232outputs ttl/cmos inputs 22 19 t5in t5out +5v 16 1 t4in t4out +5v 2 t3in +5v +5v 8 t1in t1out +5v t2out t1 t1r2 r3 r4 r5 t2t3 t5 t4 400k 400k 400k 400k 400k shdn en 20 12 v cc + top view figure 13. max235 pin configuration and typical operating circuit downloaded from: http:///
max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers maxim integrated | 23 www.maximintegrated.com gnd 8 23 r2out rs-232inputs ttl/cmos outputs 17 1621 r3out r2inr3in 5k 5k 5 4 r1out r1in 5k rs-232outputs ttl/cmos inputs r1r2 r3 2 7 t1in t1out +5v t1 400k 6 3 t2in +5v t2out t2 400k 18 t3out 1 t3in +5v t3 400k 19 24 t4in t4out +5v t4 400k shdn en 20 11 c1+c1- 1.0 f 1012 13 14 15 +5v input c2+c2- v cc +5v to +10v voltage doubler 9 1.0 f 1.0 f +10v to -10v voltage inverter 22 2423 22 21 20 19 18 17 12 3 4 5 6 7 8 t4outr2in r2out shdn r1in t2out t1out t3out t4int3in r3out gnd t1in t2in r1out 1615 14 13 9 1011 12 r3inv- c2- c2+ c1- v+ c1+ v cc dip/so max236 en 1.0 f 1.0 f top view v+ v- + figure 14. max236 pin configuration and typical operating circuit downloaded from: http:///
maxim integrated | 24 www.maximintegrated.com max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers gnd 8 23 r2out rs-232inputs ttl/cmos outputs 17 16 r3out r2inr3in 5k 5k 5 4 r1out r1in 5k rs-232outputs ttl/cmos inputs r1r2 r3 2 7 t1in t1out +5v t1 400k 6 3 t2in +5v t2out t2 400k 18 t3out 1 t3in +5v t3 400k 21 20 t5in t5out +5v t5 400k 11 c1+c1- 1.0 f 1012 13 14 15 +5v input c2+c2- v cc +5v to +10v voltage doubler 9 1.0 f 1.0 f +10v to -10v voltage inverter 22 2423 22 21 20 19 18 17 12 3 4 5 6 7 8 t4outr2in r2out t5in r1in t2out t1out t3out t4int3in r3out gnd t1in t2in r1out 1615 14 13 9 1011 12 r3inv- c2- c2+ c1- v+ c1+ v cc dip/so max237 t5out 1.0 f 1.0 f 19 24 t4in t4out +5v t4 400k v+ v- + top view figure 15. max237 pin configuration and typical operating circuit downloaded from: http:///
max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers maxim integrated | 25 www.maximintegrated.com gnd 8 3 r2out 22 23 r3out r2inr3in 5k 5k 6 7 r1out r1in 5k rs-232outputs ttl/cmos inputs rs-232inputs ttl/cmos outputs r1r2 r3 17 16 r4out r4in 5k r4 2 5 t1in t1out +5v 400k +5v 18 1 t2in t2out t2 400k 19 t3out 24 t3in +5v t3 400k 11 c1+c1- 1.0 f 1012 13 14 15 +5v input c2+c2- v cc +5v to +10v voltage doubler 9 1.0 f 1.0 f +10v to -10v voltage inverter 4 1.0 f 1.0 f 21 20 t4in t4out +5v t4 400k t1 2423 22 21 20 19 18 17 12 3 4 5 6 7 8 t3outr3in r3out t4in r2out r2in t1out t2out top view t3int2in r4out gnd r1in r1out t1in 1615 14 13 9 1011 12 r4inv- c2- c2+ c1- v+ c1+ v cc dip/so max238 t4out + v+ v- figure 16. max238 pin configuration and typical operating circuit downloaded from: http:///
maxim integrated | 26 www.maximintegrated.com max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers gnd 3 18 r3out 12 r4out r3inr4in 5k 5k 22 21 r2out r2in 5k rs-232outputs ttl/cmos inputs rs-232inputs ttl/cmos outputs r2 1 2 r1out r1in 5k r1r3 r4 10 9 r5out r5in 5k r5 19 24 t1in t1out +5v 400k +5v 23 20 t2in t2out t2 400k 16 t3out 13 t3in +5v t3 400k c1+c1- 1.0 f 6 v cc 8 +5v input 4 5 1.0 f +10v to -10v voltage inverter 17 1.0 f t1 2423 22 21 20 19 18 17 12 3 4 5 6 7 8 t1int2in r2out r2in v cc gnd r1in r1out t1outr3in r3out v- c- c+ v+ 1615 14 13 9 1011 12 t3inn.c. en t3out r4in r4out r5out r5in dip/so max239 t2out +7.5v to +13.2v input 7 v+ 11 en 14 15 n.c. v- + top view figure 17. max239 pin configuration and typical operating circuit downloaded from: http:///
max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers maxim integrated | 27 www.maximintegrated.com gnd 18 4 r3out 40 r4out r3inr4in 5k 5k 13 10 r2out r2in 5k rs-232inputs ttl/cmos outputs rs-232outputs ttl/cmos inputs r2 16 17 r1out r1in 5k r1r3 r4 36 35 r5out r5in 5k r5 7 15 t1in t1out +5v 400k +5v 14 8 t2in t2out t2 400k 37 t3out 6 t3in +5v t3 400k c1+c1- 1.0 f 25 v cc +5v input 19 30 1.0 f 26 1.0 f +5v to +10v voltage doubler 3 1.0 f t1 +5v 2 41 t5in t5out t5 400k 5 38 t4in t4out +5v 400k t4 27 c2+c2- 28 1.0 f 29 +5v to -10v voltage inverter v+ 39 en 42 43 plastic fp max240 shdnen t5out r4in r4out r5out r5in n.c. n.c.t3in t4in r2out t2int1in r1out r1in n.c.n.c. n.c. n.c. v cc gnd r2inn.c. t4out t2outt1out t3out n.c.r3in r3out n.c. t5in n.c. c1+ c2 v+ c1- c2+ n.c. v- n.c.n.c. n.c. 33 32 31 30 29 28 27 26 25 24 23 34 35 36 37 38 39 40 41 42 43 44 1 2 3 4 5 6 7 8 9 10 11 22 21 20 19 18 17 16 15 14 13 12 shdn top view v- + figure 18. max240 pin configuration and typical operating circuit downloaded from: http:///
maxim integrated | 28 www.maximintegrated.com max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers v+ v- 2 +10v c1+c1- 13 4 5 1110 12 9 614 7 13 8 t1inr1out t2inr2out t1out r1in t2out r2in +5v input c2+c2- -10v rs-232outputs rs-232inputs ttl/cmos inputs ttl/cmos outputs gnd 15 5k 5k 400k 400k +5v +5v +10v to -10v voltage inverter +5v to +10v voltage doubler 16 1615 14 13 12 11 10 9 12 34 5 6 7 8 c1+ v cc gndt1out r1in r1out t1in t2in r2out max243 dip/so v+ c1- v- c2+ c2- t2out r2in 0.1 f 0.1 f 0.1 f 0.1 f 0.1 f receiver input -3v open +3v r1 output highhigh low r2 output high lowlow top view v cc + figure 19. max243 pin configuration and typical operating circuit downloaded from: http:///
max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers maxim integrated | 29 www.maximintegrated.com 400k +10v to -10v voltage inverter +5v to +10v voltage doubler v cc 400k 400k gnd +5v +5v +5v +5v +5v 25 24 23 21 20 2 1 f 1 f 1 f 1 f 1 f 16 3 17 4 18 5k 5k 5k 5k 5k 5k 5k 5k 5k 5k c2- c2+ c1- c1+ta2out ta2in ta3out ta3in ta4out ta4in 9 ra1in 10 ra1out 8 ra2in 11 ra2out 7 ra3in 12 ra3out 6 ra4in 13 ra4out 5 ra5in 14 19 ra5out 26 2243 29 42 28 41 27 36 35 37 34 38 33 39 32 40 31 v- v+ tb2out tb2in 400k 2 15 ta1outta1in 4430 tb1out tb1in tb3out tb3in tb4out tb4in rb1in rb1out rb2in rb2out rb3in rb3out rb4in rb4out rb5in rb5out max249 functional description10 receivers 5 a-side receivers 5 b-side receivers 8 transmitters 4 a-side transmitters 4 b-side transmitters no control pins 44 123 44 0 41 42 43 5 21 24 26 25 27 28 22 23 19 20 8 9 1011 12 13 14 15 16 17 29 30 31 32 33 34 35 36 37 38 ta3in v cc ra5in max244 plcc top view ta4outta3out ta2out ta1out tb1out tb2out tb3out tb4out rb5in gnd v+ c1+c2+ c1- v- c2- tb3in tb4in rb3inrb2in rb1in rb1outrb2out rb3out rb4out rb5out tb1in tb2in ta2in ta1in ra5out ra4out ra3out ra2out ra1out ra1in ra2in 7 39 rb4in ra3in 6 18 ra4in ta4in +5v +5v +5v +5v + figure 20. max244 pin configuration and typical operating circuit downloaded from: http:///
maxim integrated | 30 www.maximintegrated.com max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers 400k v cc 400k 400k gnd +5v +5v +5v +5v +5v 40 17 1 f 3 18 4 19 5 5k 5k 5k 5k 5k 5k 5k 5k 5k 5k ta2outta2in ta3out ta3in ta4out ta4in 1 11 ra1in 10 ra1out 12 ra2in 9 ra2out 13 ra3in 8 ra3out 14 ra4in 7 ra4out 15 ra5in 6 20 ra5out 2337 22 36 21 35 29 30 28 31 27 32 26 33 25 34 tb2out tb2in tb3out tb3in tb4out tb4in rb1in rb1out rb2in rb2out rb3in rb3out rb4in rb4out rb5in rb5out +5v +5v 400k 16 2 ta1outta1in 2438 tb1out tb1in +5v +5v 40 v cc enttb1in tb2in tb3in tb4in rb5out rb4out rb3out rb2out rb1out rb1in rb2in rb3in rb4in rb5in tb1out tb2out tb3out tb4out 3938 37 36 35 34 33 32 31 12 3 4 5 6 7 8 9 10 enr ta1in ta2in ta3in ta4in ra5out ra4out ra3out ra2out ra1out ra1in ra2in ra3in ra4in ra5in ta1out ta2out ta3out ta4out gnd top view max245 3029 28 27 26 25 24 23 22 21 1112 13 14 15 16 17 18 19 dip 20 max245 functional description10 receivers 5 a-side receivers (r a5 always active) 5 b-side receivers (r b5 always active) 8 transmittters 4 a-side transmitters 2 control pins 1 receiver enable (enr) 1 transmitter enable (ent) 39 + enr ent figure 21. max245 pin configuration and typical operating circuit downloaded from: http:///
max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers maxim integrated | 31 www.maximintegrated.com 400k v cc 400k gnd +5v +5v +5v +5v +5v 40 16 1 f 2 18 4 ta1outta1in ta3out ta3in 20 2438 22 36 1 39 tb1out tb1in tb3out tb3in 400k +5v 17 3 ta2outta2in +5v 2337 tb2out tb2in 400k +5v 19 5 ta4outta4in +5v 2135 tb4out tb4in 5k 5k 5k 5k 5k 5k 5k 5k 5k 5k 11 ra1in 10 ra1out 12 ra2in 9 ra2out 13 ra3in 8 ra3out 14 ra4in 7 ra4out 15 ra5in 6 ra5out 2930 28 31 27 32 26 33 25 34 rb1in rb1out rb2in rb2out rb3in rb3out rb4in rb4out rb5in rb5out 40 v cc enbtb1in tb2in tb3in tb4in rb5out rb4out rb3out rb2out rb1out rb1in rb2in rb3in rb4in rb5in tb1out tb2out tb3out tb4out 3938 37 36 35 34 33 32 31 12 3 4 5 6 7 8 9 10 ena ta1in ta2in ta3in ta4in ra5out ra4out ra3out ra2out ra1out ra1in ra2in ra3in ra4in ra5in ta1out ta2out ta3out ta4out gnd top view max246 3029 28 27 26 25 24 23 22 21 1112 13 14 15 16 17 18 19 dip 20 max246 functional description10 receivers 5 a-side receivers (r a5 always active) 5 b-side receivers (r b5 always active) 8 transmitters 4 a-side transmitters 4 b-side transmitters 2 control pins enable a-side (ena) enable b-side (enb) ena enb + figure 22. max246 pin configuration and typical operating circuit downloaded from: http:///
maxim integrated | 32 www.maximintegrated.com max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers 400k v cc 400k gnd +5v +5v +5v +5v +5v 1 40 16 1 f 2 18 4 5k 5k 5k 5k 5k 5k 5k 5k entata1out ta1in ta3out ta3in 6 rb5out 12 ra1in 10 ra1out 13 ra2in 9 ra2out 14 ra3in 8 ra3out 15 ra4in 7 20 ra4out 11 3924 38 22 36 29 31 28 32 27 33 26 34 30 enra entb tb1out tb1in tb3out tb3in rb1in 5k 25 rb5in rb1out rb2in rb2out rb3in rb3out rb4in rb4out enrb 400k +5v 17 3 ta2outta2in +5v 2337 tb2out tb2in 400k +5v 19 5 ta4outta4in +5v 2135 tb4out tb4in 40 v cc entb tb1intb2in tb3in tb4in rb4out rb3out rb2out rb1out rb1in rb2in rb3in rb4in rb5in tb1out tb2out tb3out tb4out 3938 37 36 35 34 33 32 31 12 3 4 5 6 7 8 9 10 enta ta1in ta2in ta3in ta4in rb5out ra4out ra3out ra2out ra1out ra1in ra2in ra3in ra4in ta1out ta2out ta3out ta4out gnd top view max247 3029 28 27 26 25 24 23 22 21 1112 13 14 15 16 17 18 19 dip 20 enra enrb max247 functional description9 receivers 4 a-side receivers 5 b-side receivers (r b5 always active) 8 transmitters 4 a-side transmitters 4 b-side transmitters 4 control pins enable receiver a-side (enra) enable receiver b-side (enrb) enable receiver a-side (enta) enable receiver b-side (entb) + figure 23. max247 pin configuration and typical operating circuit downloaded from: http:///
max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers maxim integrated | 33 www.maximintegrated.com 400k +10v to -10v voltage inverter +5v to +10v voltage doubler v cc 400k gnd +5v +5v +5v +5v +5v 18 25 24 23 21 20 1 1 f 1 f 1 f 1 f 1 f 14 3 16 5k 5k 5k 5k 5k 5k 5k 5k enta c2- c2+ c1- c1+ta1out ta1in ta3out ta3in 8 ra1in 10 ra1out 7 ra2in 11 ra2out 6 ra3in 12 ra3out 5 ra4in 13 19 ra4out 9 27 26 2244 31 42 29 37 35 38 34 39 33 40 32 36 enra entb v- v+ tb1out tb1in tb3out tb3in rb1in rb1out rb2in rb2out rb3in rb3out rb4in rb4out enrb 400k +5v 2 15 ta2outta2in +5v 4330 tb2out tb2in 400k +5v 4 17 ta4outta4in +5v 4128 tb4out tb4in 44 123 44 0 41 42 43 5 21 24 26 25 27 28 22 23 19 20 8 9 1011 12 13 14 15 16 17 29 30 31 32 33 34 35 36 37 38 ta4in v cc ra4in max248 plcc top view ta4outta3out ta2out ta1out tb1out tb2out tb3out ta4out rb4in gnd v+ c1+c2+ c1- v- c2- tb4in entb rb2inrb1in rb1out rb2out rb3out rb4out tb1in tb2in tb3in ta3in ta2in ta1in ra4out ra3out ra2out ra1out enra ra1in 7 39 rb3in ra2in 6 18 ra3in enrb enta max248 functional description8 receivers 4 a-side receivers 4 b-side receivers 8 transmitters 4 a-side transmitters 4 b-side transmitters 4 control pins enable receiver a-side (enra) enable receiver b-side (enrb) enable receiver a-side (enta) enable receiver b-side (entb ) + figure 24. max248 pin configuration and typical operating circuit downloaded from: http:///
maxim integrated | 34 www.maximintegrated.com max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers 400k +10v to -10v voltage inverter +5v to +10v voltage doubler v cc 400k 400k gnd +5v +5v +5v +5v +5v +5v +5v 18 25 24 23 21 20 1 1 f 1 f 1 f 1 f 15 2 16 3 17 5k 5k 5k 5k 5k 5k 5k 5k 5k 5k enta c2- c2+ c1- c1+ta1out ta1in ta2out ta2in ta3out ta3in 8 ra1in 10 ra1out 7 ra2in 11 ra2out 6 ra3in 12 ra3out 5 ra4in 13 ra4out 4 ra5in 14 19 ra5out 9 27 26 2244 30 43 29 42 28 37 35 38 34 39 33 40 32 41 31 36 enra entb v- v+ tb1out tb1in tb2out tb2in tb3out tb3in rb1in rb1out rb2in rb2out rb3in rb3out rb4in rb4out rb5in rb5out enrb 44 123 44 0 41 42 43 5 21 24 26 25 27 28 22 23 19 20 8 9 1011 12 13 14 15 16 17 29 30 31 32 33 34 35 36 37 38 v cc ra4inra5in max249 plcc top view ta3outta2out ta1out tb1out tb2out tb3out rb4in rb5in gnd v+ c1+c2+ c1- v- c2- tb3in entb rb2inrb1in rb1out max249 functional description10 receivers 5 a-side receivers 5 b-side receivers 6 transmitters 3 a-side transmitters 3 b-side transmitters 4 control pins enable receiver a-side (enra) enable receiver b-side (enrb) enable receiver a-side (enta) enable receiver b-side (entb) rb2outrb3out rb4out rb5out tb1in tb2in ta3in ta2in ta1in ra4outra5out ra3out ra2out ra1out enra ra1in 7 39 rb3in ra2in 6 18 ra3in enrb enta 1 f + figure 25. max249 pin configuration and typical operating circuit downloaded from: http:///
max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers maxim integrated | 35 www.maximintegrated.com ordering information (continued) + denotes a lead(pb)-free/rohs-compliant package. * contact factory for dice specifications. part temp range pin-package max220 cpe+ 0c to +70c 16 plastic dip max220cse+ 0c to +70c 16 narrow so max220cwe+ 0c to +70c 16 w ide so max220c/d 0c to +70c dice* max220epe+ -40c to +85c 16 plastic dip max220ese+ -40c to +85c 16 narrow so max220ewe+ -40c to +85c 16 w ide so max220eje -40c to +85c 16 cerdip max220mje 55c to +125 c 16 cerdip max222 cpn+ 0c to +70c 18 plastic dip max222cwn+ 0c to +70c 18 w ide so max222c/d 0c to +70c dice* max222epn+ -40c to +85c 18 plastic dip max222ewn+ -40c to +85c 18 w ide so max222ejn -40c to +85c 18 cerdip max222mjn 55c to +125 c 18 cerdip max223 cai+ 0c to +70c 28 ssop max223cw i+ 0c to +70c 28 w ide so max223c/d 0c to +70c dice* max223eai+ -40c to +85c 28 ssop max223ew i+ -40c to +85c 28 w ide so max225 cw i+ 0c to +70c 28 w ide so max225ew i+ -40c to +85c 28 w ide so max230 cpp+ 0c to +70c 20 plastic dip1 max230cwp+ 0c to +70c 20 w ide so max230c/d 0c to +70c dice* max230epp+ -40c to +85c 20 plastic dip max230ewp+ -40c to +85c 20 w ide so max230ejp -40c to +85c 20 cerdip max230mjp 55c to +125 c 20 cerdip max231 cpd+ 0c to +70c 14 plastic dip max231cwe+ 0c to +70c 16 w ide so max231cjd 0c to +70c 14 cerdip max231c/d 0c to +70c dice* max231epd+ -40c to +85c 14 plastic dip part temp range pin-package max231ewe+ - 40c to +85c 16 w ide so max231ejd - 40c to +85c 14 cerdip max231mjd 55c to +125 c 14 cerdip max232 cpe+ 0c to +70c 16 plastic dip max232cse+ 0c to +70c 16 narrow so max232cwe+ 0c to +70c 16 w ide so max232c/d 0c to +70c dice* max232epe+ - 40c to +85c 16 plastic dip max232ese+ - 40c to +85c 16 narrow so max232ewe+ - 40c to +85c 16 w ide so max232eje - 40c to +85c 16 cerdip max232mje 55c to +125 c 16 cerdip max232mlp+ 55c to +125 c 20 lcc max232a cpe+ 0c to +70c 16 plastic dip max232acse+ 0c to +70c 16 narrow so max232acw e+ 0c to +70c 16 w ide so max232ac/d 0c to +70c dice* max232aepe+ - 40c to +85c 16 plastic dip max232aese+ - 40c to +85c 16 narrow so max232aew e+ - 40c to +85c 16 w ide so max232aeje - 40c to +85c 16 cerdip max232amje 55c to +125 c 16 cerdip max232amlp+ 55c to +125 c 20 lcc max233 cpp+ 0c to +70c 20 plastic dip max233epp+ - 40c to +85c 20 plastic dip max233a cpp+ 0c to +70c 20 plastic dip max233acw p+ 0c to +70c 20 w ide so max233aepp+ - 40c to +85c 20 plastic dip max233aew p+ - 40c to +85c 20 w ide so max234 cpe+ 0c to +70c 16 plastic dip max234cwe+ 0c to +70c 16 w ide so max234c/d 0c to +70c dice* max234epe+ - 40c to +85c 16 plastic dip downloaded from: http:///
maxim integrated | 36 www.maximintegrated.com max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers ordering information (continued) + denotes a lead(pb)-free/rohs-compliant package. * contact factory for dice specifications. part temp range pin-package max234ewe+ - 40c to +85c 16 w ide so max234eje - 40c to +85c 16 cerdip max234mje 55c to +125 c 16 cerdip max235 cpg+ 0c to +70c 24 w ide plastic di p max235epg+ -40c to +85c 24 w ide plastic di p max235edg -40c to +85c 24 ceramic sb max235mdg 55c to +125 c 24 ceramic sb max236 cng + 0c to +70c 24 narrow plastic dip max236cwg+ 0c to +70c 24 w ide so max236c/d 0c to +70c dice* max236eng+ -40c to +85c 24 narrow plastic dip max236ewg+ -40c to +85c 24 w ide so max236erg -40c to +85c 24 narrow cerdip max236mrg 55c to +125 c 24 narrow cerdip max237 cng+ 0c to +70c 24 narrow plastic dip max237cwg+ 0c to +70c 24 w ide so max237c/d 0c to +70c dice* max237eng+ -40c to +85c 24 narrow plastic dip max237ewg+ -40c to +85c 24 w ide so max237erg -40c to +85c 24 narrow cerdip max237mrg 55c to +125 c 24 narrow cerdip max238 cng + 0c to +70c 24 narrow plastic dip max238cwg+ 0c to +70c 24 w ide so max238c/d 0c to +70c dice* max238eng+ -40c to +85c 24 narrow plastic dip max238ewg+ -40c to +85c 24 w ide so max238erg -40c to +85c 24 narrow cerdip max238mrg 55c to +125 c 24 narrow cerdip max239 cng+ 0c to +70c 24 narrow plastic dip max239cwg+ 0c to +70c 24 w ide so max239c/d 0c to +70c dice* max239eng+ -40c to +85c 24 narrow plastic dip max239ewg+ -40c to +85c 24 w ide so max239erg -40c to +85c 24 narrow cerdip max239mrg 55c to +125 c 24 narrow cerdip part temp range pin-package max240 cmh+ 0c to +70c 44 plastic fp max240c/d 0c to +70c dice* max241 cai+ 0c to +70c 28 ssop max241cw i+ 0c to +70c 28 w ide so max241c/d 0c to +70c dice* max241eai+ -40c to +85c 28 ssop max241ew i+ -40c to +85c 28 w ide so max242 cap+ 0c to +70c 20 ssop max242cpn+ 0c to +70c 18 plastic dip max242cwn+ 0c to +70c 18 w ide so max242c/d 0c to +70c dice* max242epn+ -40c to +85c 18 plastic dip max242ewn+ -40c to +85c 18 w ide so max242ejn -40c to +85c 18 cerdip max242mjn 55c to +125 c 18 cerdip max243 cpe+ 0c to +70c 16 plastic dip max243cse+ 0c to +70c 16 narrow so max243cwe+ 0c to +70c 16 w ide so max243c/d 0c to +70c dice* max243epe+ -40c to +85c 16 plastic dip max243ese+ -40c to +85c 16 narrow so max243ewe+ -40c to +85c 16 w ide so max243eje -40c to +85c 16 cerdip max243mje 55c to +125 c 16 cerdip max244 cqh+ 0c to +70c 44 plcc max244c/d 0c to +70c dice* max244eqh+ -40c to +85c 44 plcc max245 cpl+ 0c to +70c 40 plastic dip max245c/d 0c to +70c dice* max245epl+ -40c to +85c 40 plastic dip max246 cpl+ 0c to +70c 40 plastic dip max246c/d 0c to +70c dice* max246epl+ -40c to +85c 40 plastic dip downloaded from: http:///
max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers maxim integrated | 37 www.maximintegrated.com selection table ordering information (continued) part temp range pin-package max247 cpl+ 0c to +70c 40 plastic dip max247c/d 0c to +70c dice* max247epl+ -40c to +85c 40 plastic dip max248 cqh+ 0c to +70c 44 plcc max248c/d 0c to +70c dice* max248eqh+ -40c to +85c 44 plcc max249 cqh+ 0c to +70c 44 plcc max249eqh+ -40c to +85c 44 plcc + denotes a lead(pb)-free/rohs-compliant package. * contact factory for dice specifications. part number power supply (v) no. of rs-232 drivers /rx no. of ext. caps nominal cap. value ( + f) shdn & three- state rx active in shdn data rate (kbps) features max220 +5 2/2 4 0.047, 0.33 no no 120 ultra-low-power, industry-standard pinout max222 +5 2/2 4 0.1 yes no 200 low-power shutdown max223 +5 4/5 4 1.0, 0.1 yes yes 120 max241 and receivers active in shutdown max225 +5 5/5 0 yes yes 120 available in so max230 +5 5/0 4 1.0, 0.1 yes no 120 5 drivers with shutdown max231 +5 and +7.5 to 2/2 2 1.0, 0.1 no no 120 standard +5/+12v or battery supplies; same functions as max232 max232 +5 2/2 4 1.0, 0.1 no no 120 (64) industry standard max232a +5 2/2 4 0.1 no no 200 higher slew rate, small caps max233 +5 2/2 0 no no 120 no external caps max233a +5 2/2 0 no no 200 no external caps, high slew rate max234 +5 4/0 4 1.0, 0.1 no no 120 replaces 1488 max235 +5 5/5 0 yes no 120 no external caps max236 +5 4/3 4 1.0, 0.1 yes no 120 shutdown, three state max237 +5 5/3 4 1.0, 0.1 no no 120 complements ibm pc serial port max238 +5 4/4 4 1.0, 0.1 no no 120 replaces 1488 and 1489 max239 +5 and +7.5 to 3/5 2 1.0, 0.1 no no 120 standard +5/+12v or battery supplies; sin g le-packa g esolutionforibmpcserial max240 +5 5/5 4 1.0 yes no 120 dip or flatpack package max241 +5 4/5 4 1.0, 0.1 yes no 120 complete ibm pc serial port max242 +5 2/2 4 0.1 yes yes 200 separate shutdown and enable max243 +5 2/2 4 0.1 no no 200 open-line detection simplifies cabling max244 +5 8/10 4 1.0 no no 120 high slew rate max245 +5 8/10 0 yes yes 120 high slew rate, int. caps, two shutdown max246 +5 8/10 0 yes yes 120 high slew rate, int. caps, three shutdown max247 +5 8/9 0 yes yes 120 high slew rate, int. caps, nine operating max248 +5 8/8 4 1.0 yes yes 120 high slew rate, selective half-chip enables max249 +5 6/10 4 1.0 yes yes 120 available in quad flatpack package downloaded from: http:///
maxim integrated | 38 www.maximintegrated.com max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers package type package code outline no. land pattern no. 14 pdip p14+3 21-0043 16 pdip p16+1 16 pdip p16+2 16 pdip p16+3 18 pdip p18+5 20 pdip p20+3 20 pdip p20m+1 24 pdip n24+3 24 pdip p24m+1 21-0044 28 pdip p28+2 40 pdip p40+1 40 pdip p40m+2 14 cerdip j14-3 21-0045 16 cerdip j16-3 18 cerdip j18-2 20 cerdip j20-2 24 cerdip r24-4 16 so(n) s16+3 21-0041 90-0097 16 so(n) s16+5 package information for the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages . note that a ?? ?? or ??in the package code indicates rohs status only. package drawings may show a different suffix character, but the drawing pertains to the package regardless of rohs status. package type package code outline no. land pattern no. 16 so(w) w16+1 21-0042 90-0107 16 so(w) w16+2 16 so(w) w16+3 18 so(w) w18+1 90-0181 20 so(w) w20+3 90-0108 20 so(w) w20m+1 24 so(w) w24+2 90-0182 28 so(w) w28+1 90-0109 28 so(w) w28+2 28 so(w) w28m+1 20 lcc l20+3 21-0658 90-0177 20 ssop a20+1 21-0056 90-0094 24 ssop a24+2 90-0110 28 ssop a28+1 90-0095 16 tssop u16+1 90-0117 16 fpck f16-3 21-0013 44 mqfp m44+5 21-0826 90-0169 44 plcc q44+1 21-0049 90-0236 44 plcc q44+2 downloaded from: http:///
maxim integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim integrated product. no circuit patent licenses are implied. maxim integrated reserves the right to change the circuitry and specifications without notice at any time. the parametric values (min and max limits) shown in the electrical characteristics table are guaranteed. other parametric values quoted in this data sheet are provided for guidance. maxim integrated and the maxim integrated logo are trademarks of maxim integrated products, inc. 2015 maxim integrated products, inc. | 39 for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxim integrateds website at www.maximintegrated.com. max220Cmax249 +5v-powered, multichannel rs-232 drivers/receivers revision history revision number revision date description pages changed 15 1/06 added part information to the lead temperature in the absolute maximum ratings sections 2, 5, 8 16 7/10 changed multiple packages to lead-free versions; updated/added notes 3, 4, 5, 7, and8 to the electrical characteristics table; removed incorrect subscripting from all pin names in the electrical characteristics table and pin configurations 1, 2?, 17?6 17 1/15 updated general description and benefits and features sections 1 downloaded from: http:///

▲Up To Search▲

Price & Availability of MAX244CQH-D

	To Download MAX244CQH-D Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .