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general description the max481e, max483e, max485e, max487e max491e, and max1487e are low-power transceivers for rs-485 and rs-422 communications in harsh environ- ments. each driver output and receiver input is protected against ?5kv electro-static discharge (esd) shocks, without latchup. these parts contain one driver and one receiver. the max483e, max487e, max488e, and max489e feature reduced slew-rate drivers that minimize emi and reduce reflections caused by improperly termi- nated cables, thus allowing error-free data transmission up to 250kbps. the driver slew rates of the max481e, max485e, max490e, max491e, and max1487e are not limited, allowing them to transmit up to 2.5mbps. these transceivers draw as little as 120? supply cur- rent when unloaded or when fully loaded with disabled drivers (see selector guide ). additionally, the max481e, max483e, and max487e have a low-current shutdown mode in which they consume only 0.5?. all parts oper- ate from a single +5v supply. drivers are short-circuit current limited, and are protected against excessive power dissipation by thermal shutdown circuitry that places their outputs into a high-impedance state. the receiver input has a fail-safe feature that guar- antees a logic-high output if the input is open circuit. the max487e and max1487e feature quarter-unit-load receiver input impedance, allowing up to 128 trans- ceivers on the bus. the max488e?ax491e are designed for full-duplex communications, while the max481e, max483e, max485e, max487e, and max1487e are designed for half-duplex applications. for applications that are not esd sensitive see the pin- and function-compatible max481, max483, max485, max487?ax491, and max1487. applications low-power rs-485 transceivers low-power rs-422 transceivers level translators transceivers for emi-sensitive applications industrial-control local area networks next-generation device features ? for fault-tolerant applications: max3430: ?0v fault-protected, fail-safe, 1/4- unit load, +3.3v, rs-485 transceiver max3080?ax3089: fail-safe, high-speed (10mbps), slew-rate-limited, rs-485/rs-422 transceivers ? for space-constrained applications: max3460?ax3464: +5v, fail-safe, 20mbps, profibus, rs-485/rs-422 transceivers max3362: +3.3v, high-speed, rs-485/rs-422 transceiver in a sot23 package max3280e?ax3284e: ?5kv esd-protected, 52mbps, +3v to +5.5v, sot23, rs-485/rs-422 true fail-safe receivers max3030e?ax3033e: ?5kv esd-protected, +3.3v, quad rs-422 transmitters ? for multiple transceiver applications: max3293/max3294/max3295: 20mbps, +3.3v, sot23, rs-485/rs-422 transmitters ? for fail-safe applications: max3440e?ax3444e: ?5kv esd-protected, ?0v fault-protected, 10mbps, fail-safe rs-485/j1708 transceivers ? for low-voltage applications: max3483e/max3485e/max3486e/max3488e/ max3490e/max3491e: +3.3v powered, ?5kv esd-protected, 12mbps, slew-rate-limited, true rs-485/rs-422 transceivers max481e/max483e/max485e/max487e?ax491e/max1487e ?5kv esd-protected, slew-rate-limited, low-power, rs-485/rs-422 transceivers ________________________________________________________________ maxim integrated products 1 ordering information 19-0410; rev 4; 10/03 for pricing, delivery, and ordering information, please contact maxim/dallas direct! at 1-888-629-4642, or vis it maxim? website at www.maxim-ic.com. part temp range pin-package max481e cpa 0? to +70? 8 plastic dip max481ecsa 0? to +70? 8 so max481eepa -40? to +85? 8 plastic dip max481eesa -40? to +85? 8 so max483e cpa 0? to +70? 8 plastic dip max483ecsa 0? to +70? 8 so max483eepa -40? to +85? 8 plastic dip max483eesa -40? to +85? 8 so ordering information continued at end of data sheet. selector guide appears at end of data sheet .
max481e/max483e/max485e/max487e?ax491e/max1487e ?5kv esd-protected, slew-rate-limited, low-power, rs-485/rs-422 transceivers 2 _______________________________________________________________________________________ supply voltage (v cc ) .............................................................12v control input voltage ( r e , de)...................-0.5v to (v cc + 0.5v) driver input voltage (di).............................-0.5v to (v cc + 0.5v) driver output voltage (y, z; a, b) ..........................-8v to +12.5v receiver input voltage (a, b).................................-8v to +12.5v receiver output voltage (ro)....................-0.5v to (v cc + 0.5v) continuous power dissipation (t a = +70?) 8-pin plastic dip (derate 9.09mw/? above +70?) ....727mw 14-pin plastic dip (derate 10.00mw/? above +70?) ..800mw 8-pin so (derate 5.88mw/? above +70?).................471mw 14-pin so (derate 8.33mw/? above +70?)...............667mw operating temperature ranges max4_ _c_ _/max1487ec_ a .............................0? to +70? max4_ _e_ _/max1487ee_ a...........................-40? to +85? storage temperature range .............................-65? to +160? lead temperature (soldering, 10sec) .............................+300? dc electrical characteristics (v cc = 5v ?%, t a = t min to t max , unless otherwise noted.) (notes 1, 2) 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. absolute maximum ratings parameter symbol min typ max units driver common-mode output voltage v oc 3 v change in magnitude of driver differential output voltage for complementary output states ? v od 0.2 v change in magnitude of driver common-mode output voltage for complementary output states ? v od 0.2 v input high voltage v ih 2.0 v input low voltage v il 0.8 v input current i in1 ? ? differential driver output (no load) v od1 5 v 2 v differential driver output (with load) v od2 1.5 5 1.0 -0.8 ma 0.25 ma -0.2 receiver differential threshold voltage -0.2 0.2 v receiver input hysteresis ? v th 70 mv receiver output high voltage v oh 3.5 receiver output low voltage v ol 0.4 v three-state (high impedance) output current at receiver i ozr ? ? 12 k conditions de = 0v; v cc = 0v or 5.25v, all devices except max487e/max1487e r = 27 or 50 , figure 8 r = 27 or 50 , figure 8 r = 27 or 50 , figure 8 de, di, r e max487e/max1487e, de = 0v, v cc = 0v or 5.25v de, di, r e de, di, r e -7v v cm 12v v cm = 0v i o = -4ma, v id = 200mv i o = 4ma, v id = -200mv r = 50 (rs-422) 0.4v v o 2.4v r = 27 (rs-485), figure 8 -7v v cm 12v, all devices except max487e/max1487e receiver input resistance r in -7v v cm 12v, max487e/max1487e 48 k v th i in2 input current (a, b) v in = 12v v in = -7v v in = 12v v in = -7v v
max481e/max483e/max485e/max487e?ax491e/max1487e ?5kv esd-protected, slew-rate-limited, low-power, rs-485/rs-422 transceivers _______________________________________________________________________________________ 3 switching characteristics?ax481e/max485e, max490e/max491e, max1487e (v cc = 5v ?%, t a = t min to t max , unless otherwise noted.) (notes 1, 2) dc electrical characteristics (continued) (v cc = 5v ?%, t a = t min to t max , unless otherwise noted.) (notes 1, 2) ma 795 0v v o v cc i osr receiver short-circuit current ma 35 250 -7v v o 12v (note 4) i osd2 driver short-circuit current, v o = low ma 35 250 -7v v o 12v (note 4) i osd1 driver short-circuit current, v o = high max1487e, r e = 0v or v cc 250 400 350 650 conditions units min typ max symbol parameter 230 400 300 500 max481e/max485e, r e = 0v or v cc 500 900 max490e/max491e, de, di, r e = 0v or v cc 300 500 max488e/max489e, de, di, r e = 0v or v cc 120 250 de = v cc 300 500 de = 0v de = v cc de = 0v ? max481e/483e/487e, de = 0v, r e = v cc 0.5 10 i shdn supply current in shutdown 120 250 i cc no-load supply current (note 3) de = v cc de = 0v max483e max487e max483e/max487e, r e = 0v or v cc ? 52025 max490ec/e, max491ec/e max481e, max485e, max1487e driver rise or fall time t r , t f 32040 figures 10 and 12, r diff = 54 , c l1 = c l2 = 100pf max490ec/e, max491ec/e figures 11 and 13, c l = 15pf, s2 closed figures 11 and 13, c l = 15pf, s1 closed figures 11 and 13, c l = 100pf, s1 closed figures 11 and 13, c l = 100pf, s2 closed parameter symbol min typ max units driver enable to output high t zh 45 70 receiver input to output t plh , t phl driver output skew to output ns driver enable to output low t zl 45 70 ns driver disable time from low t lz 45 70 ns | t plh - t phl | differential receiver skew driver disable time from high t skd t hz 45 70 5 ns 20 60 200 receiver enable to output low t zl 20 50 ns receiver enable to output high driver input to output t zh 20 50 ns receiver disable time from low t lz 20 50 t plh 10 40 60 ns receiver disable time from high t hz 20 50 mbps maximum data rate f max 2.5 ns time to shutdown t shdn 50 200 600 t skew 510 ns conditions figures 10 and 14, r diff = 54 , c l1 = c l2 = 100pf figures 10 and 14, r diff = 54 , c l1 = c l2 = 100pf figures 9 and 15, c rl = 15pf, s1 closed figures 9 and 15, c rl = 15pf, s2 closed figures 9 and 15, c rl = 15pf, s1 closed figures 9 and 15, c rl = 15pf, s2 closed max481e (note 5) figures 10 and 12, r diff = 54 , c l1 = c l2 = 100pf max481e, max485e, max1487e ns figures 10 and 12, r diff = 54 , c l1 = c l2 = 100pf t phl 10 40 60 ns ns ns 20 60 150 ns kv ?5 a, b, y and z pins, tested using human body model esd protection
max481e/max483e/max485e/max487e?ax491e/max1487e ?5kv esd-protected, slew-rate-limited, low-power, rs-485/rs-422 transceivers 4 _______________________________________________________________________________________ switching characteristics?ax483e, max487e/max488e/max489e (v cc = 5v ?%, t a = t min to t max , unless otherwise noted.) (notes 1, 2) switching characteristics max481e/max485e, max490e/max491e, max1487e (continued) (v cc = 5v ?%, t a = t min to t max , unless otherwise noted.) (notes 1, 2) 225 1000 figures 11 and 13, c l = 100pf, s2 closed figures 11 and 13, c l = 100pf, s1 closed figures 9 and 15, c l = 15pf, s2 closed, a - b = 2v conditions ns 45 100 t zh(shdn) driver enable from shutdown to output high (max481e) ns figures 9 and 15, c l = 15pf, s1 closed, b - a = 2v t zl(shdn) receiver enable from shutdown to output low (max481e) ns 45 100 t zl(shdn) driver enable from shutdown to output low (max481e) ns 225 1000 t zh(shdn) receiver enable from shutdown to output high (max481e) units min typ max symbol parameter t plh t skew figures 10 and 12, r diff = 54 , c l1 = c l2 = 100pf t phl figures 10 and 12, r diff = 54 , c l1 = c l2 = 100pf driver input to output driver output skew to output ns 20 800 ns ns 2000 max483e/max487e, figures 11 and 13, c l = 100pf, s2 closed t zh(shdn) driver enable from shutdown to output high 250 2000 ns 2500 max483e/max487e, figures 9 and 15, c l = 15pf, s1 closed t zl(shdn) receiver enable from shutdown to output low ns 2500 max483e/max487e, figures 9 and 15, c l = 15pf, s2 closed t zh(shdn) receiver enable from shutdown to output high ns 2000 max483e/max487e, figures 11 and 13, c l = 100pf, s1 closed t zl(shdn) driver enable from shutdown to output low ns 50 200 600 max483e/max487e (note 5) t shdn time to shutdown t phl t plh , t phl < 50% of data period figures 9 and 15, c rl = 15pf, s2 closed figures 9 and 15, c rl = 15pf, s1 closed figures 9 and 15, c rl = 15pf, s2 closed figures 9 and 15, c rl = 15pf, s1 closed figures 11 and 13, c l = 15pf, s2 closed figures 10 and 14, r diff = 54 , c l1 = c l2 = 100pf figures 11 and 13, c l = 15pf, s1 closed figures 11 and 13, c l = 100pf, s1 closed figures 11 and 13, c l = 100pf, s2 closed conditions kbps 250 f max 250 800 2000 maximum data rate ns 25 50 t hz receiver disable time from high ns 250 800 2000 25 50 t lz receiver disable time from low ns 25 50 t zh receiver enable to output high ns 25 50 t zl receiver enable to output low ns ns 100 300 3000 t hz t skd driver disable time from high i t plh - t phl i differential receiver skew figures 10 and 14, r diff = 54 , c l1 = c l2 = 100pf ns 300 3000 t lz driver disable time from low ns 250 2000 t zl driver enable to output low ns figures 10 and 12, r diff = 54 , c l1 = c l2 = 100pf ns 250 2000 t r , t f 250 2000 driver rise or fall time ns t plh receiver input to output 250 2000 t zh driver enable to output high units min typ max symbol parameter
max481e/max483e/max485e/max487e?ax491e/max1487e ?5kv esd-protected, slew-rate-limited, low-power, rs-485/rs-422 transceivers _______________________________________________________________________________________ 5 0 5 10 15 20 25 30 35 40 45 50 output current vs. receiver output low voltage max481e-01 output low voltage (v) output current (ma) 1.5 2.0 2.5 1.0 0.5 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 -60 -20 60 receiver output low voltage vs. temperature max481e-04 temperature (?) output low voltage (v) 20 100 -40 40 080 i ro = 8ma 0 -5 -10 -15 -20 -25 1.5 3.0 output current vs. receiver output high voltage max481e-02 output high voltage (v) output current (ma) 5.0 4.5 4.0 2.0 2.5 3.5 3.0 3.2 3.4 3.6 3.8 4.0 4.2 4.4 4.6 4.8 -60 -20 60 receiver output high voltage vs. temperature max481e-03 temperature (?) output high voltage (v) 20 100 -40 40 080 i ro = 8ma 0 10 20 30 40 50 60 70 80 90 driver output current vs. differential output voltage max481e-05 differential output voltage (v) output current (ma) 1.5 2.0 2.5 3.0 3.5 4.0 4.5 1.0 0.5 0 __________________________________________typical operating characteristics (v cc = 5v, t a = +25?, unless otherwise noted.) notes for electrical/switching characteristics note 1: all currents into device pins are positive; all currents out of device pins are negative. all voltages are referenced to device ground unless otherwise specified. note 2: all typical specifications are given for v cc = 5v and t a = +25?. note 3: supply current specification is valid for loaded transmitters when de = 0v. note 4: applies to peak current. see typical operating characteristics. note 5: the max481e/max483e/max487e are put into shutdown by bringing r e high and de low. if the inputs are in this state for less than 50ns, the parts are guaranteed not to enter shutdown. if the inputs are in this state for at least 600ns, the parts are guaranteed to have entered shutdown. see low-power shutdown mode section.
max481e/max483e/max485e/max487e?ax491e/max1487e ?5kv esd-protected, slew-rate-limited, low-power, rs-485/rs-422 transceivers 6 _______________________________________________________________________________________ ____________________________typical operating characteristics (continued) (v cc = 5v, t a = +25?, unless otherwise noted.) 1.5 2.3 2.2 2.1 2.0 1.9 1.8 1.7 1.6 -60 -20 60 driver differential output voltage vs. temperature max481e-06 temperature (?) differential output voltage (v) 20 100 -40 40 080 r = 54 w 0 20 40 60 80 100 120 140 output current vs. driver output low voltage max481e-07 output low voltage (v) output current (ma) 024681012 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -8 -2 output current vs. driver output high voltage max481e-08 output high voltage (v) output current (ma) 6 4 2 -6 -4 0 0 100 200 300 400 500 600 -60 -20 60 max481e/max485e/max490e/max491e supply current vs. temperature max481e-09 temperature (?) supply current ( m a) 20 100 -40 40 080 max481e/max485e; de = v cc , re = x max485e; de = 0, re = x, max481e; de = re = 0 max490e/max491e; de = re = x max481e; de = 0, re = v cc 0 100 200 300 400 500 600 -60 -20 60 max483e/max487e?ax489e supply current vs. temperature max481e-10 temperature (?) supply current ( m a) 20 100 -40 40 080 max483e; de = v cc , re = x max487e; de = v cc , re = x max483e/max487e; de = 0, re = v cc max483e/max487e; de = re = 0, max488e/max489e; de = re = x 0 100 200 300 400 500 600 -60 -20 60 max1487e supply current vs. temperature max481e-11 temperature (?) supply current ( m a) 20 100 -40 40 080 max1487e; de = v cc , re = x max1487e; de = 0v, re = x
max481e/max483e/max485e/max487e?ax491e/max1487e ?5kv esd-protected, slew-rate-limited, low-power, rs-485/rs-422 transceivers _______________________________________________________________________________________ 7 max481e/max483e/max485e/max487e?ax491e/max1487e ______________________________________________________________pin description 1 2 receiver output: if a > b by 200mv, ro will be high; if a < b by 200mv, ro will be low. 2 receiver output enable. ro is enabled when r e is low; ro is high impedance when r e is high. 3 driver output enable. the driver outputs, y and z, are enabled by bringing de high. they are high imped- ance when de is low. if the driver outputs are enabled, the parts function as line drivers. while they are high impedance, they function as line receivers if r e is low. 4 3 driver input. a low on di forces output y low and out- put z high. similarly, a high on di forces output y high and output z low. 6 noninverting receiver input and noninverting driver output 6 inverting driver output 5 noninverting driver output 5 4 ground no connect?ot internally connected 8 1 positive supply: 4.75v v cc 5.25v 7 inverting receiver input 7 inverting receiver input and inverting driver output 8 noninverting receiver input pin 2 3 4 5 10 9 6, 7 1, 8, 13 14 11 12 ro r e de di a z y gnd n.c. v cc b b a function max489e max491e name max488e max490e max481e/max483e max485e/max487e max1487e
max481e/max483e/max485e/max487e?ax491e/max1487e ?5kv esd-protected, slew-rate-limited, low-power, rs-485/rs-422 transceivers 8 _______________________________________________________________________________________ max488e max490e top view 1 2 3 4 ro di gnd 8 7 6 5 a b z y v cc dip/so r d rt rt v cc 5 6 7 8 ro di gnd 4 gnd di ro 3 2 a b y z v cc dr r d 1 0.1 m f note: typical operating circuit shown with dip/so package. max489e max491e dip/so top view rt rt de v cc re gnd v cc re gnd de ro di 9 10 12 11 b a z y 0.1 m f 5 ro nc di 2 1, 8, 13 3 6, 7 14 4 1 2 3 4 5 6 7 14 13 12 11 10 9 8 v cc n.c. n.c. a b z y n.c. ro re de di gnd gnd r d d rd r figure 2. max488e/max490e pin configuration and typical operating circuit figure 3. max489e/max491e pin configuration and typical operating circuit max481e max483e max485e max487e max1487e top view note: pin labels y and z on timing, test, and waveform diagrams refer to pins a and b when de is high. typical operating circuit shown with dip/so package. 1 2 3 4 8 5 v cc 0.1 m f gnd di de re ro r d rt rt 7 6 d r de re di ro a b 1 2 3 4 8 7 6 5 v cc b a gnd di de re ro dip/so r d b a figure 1. max481e/max483e/max485e/max487e/max1487e pin configuration and typical operating circuit
max481e/max483e/max485e/max487e?ax491e/max1487e ?5kv esd-protected, slew-rate-limited, low-power, rs-485/rs-422 transceivers _______________________________________________________________________________________ 9 __________function tables (max481e/max483e/max485e/max487e/max1487e) table 1. transmitting table 2. receiving inputs output re de a-b ro 0 0 0 1 0 0 0 0 > +0.2v < -0.2v inputs open x 1 0 1 high-z * x = don't care high-z = high impedance * shutdown mode for max481e/max483e/max487e inputs outputs re de di z y x x 0 1 1 1 0 0 1 0 x x 0 1 high-z high-z * 1 0 high-z high-z * x = don't care high-z = high impedance * shutdown mode for max481e/max483e/max487e __________applications information the max481e/max483e/max485e/max487e?ax491e and max1487e are low-power transceivers for rs-485 and rs-422 communications. these ??versions of the max481, max483, max485, max487?ax491, and max1487 provide extra protection against esd. the rugged max481e, max483e, max485e, max497e max491e, and max1487e are intended for harsh envi- ronments where high-speed communication is important. these devices eliminate the need for transient suppres- sor diodes and the associated high capacitance loading. the standard (non-?? max481, max483, max485, max487?ax491, and max1487 are recommended for applications where cost is critical. the max481e, max485e, max490e, max491e, and max1487e can transmit and receive at data rates up to 2.5mbps, while the max483e, max487e, max488e, and max489e are specified for data rates up to 250kbps. the max488e?ax491e are full-duplex transceivers, while the max481e, max483e, max487e, and max1487e are half-duplex. in addition, driver- enable (de) and receiver-enable (re) pins are included on the max481e, max483e, max485e, max487e, max489e, max491e, and max1487e. when disabled, the driver and receiver outputs are high impedance. ?5kv esd protection as with all maxim devices, esd-protection structures are incorporated on all pins to protect against electro- static discharges encountered during handling and assembly. the driver outputs and receiver inputs have extra protection against static electricity. maxim? engi- neers developed state-of-the-art structures to protect these pins against esd of ?5kv without damage. the esd structures withstand high esd in all states: normal operation, shutdown, and powered down. after an esd event, maxim? max481e, max483e, max485e, max487e?ax491e, and max1487e keep working without latchup. esd protection can be tested in various ways; the transmitter outputs and receiver inputs of this product family are characterized for protection to ?5kv using the human body model. other esd test methodologies include iec10004-2 con- tact discharge and iec1000-4-2 air-gap discharge (for- merly iec801-2). esd test conditions esd performance depends on a variety of conditions. contact maxim for a reliability report that documents test set-up, test methodology, and test results. human body model figure 4 shows the human body model, and figure 5 shows the current waveform it generates when dis- charged into a low impedance. this model consists of a 100pf capacitor charged to the esd voltage of inter- est, which is then discharged into the test device through a 1.5k resistor. iec1000-4-2 the iec1000-4-2 standard covers esd testing and per- formance of finished equipment; it does not specifically refer to integrated circuits (figure 6).
max481e/max483e/max485e/max487e?ax491e/max1487e ?5kv esd-protected, slew-rate-limited, low-power, rs-485/rs-422 transceivers 10 ______________________________________________________________________________________ charge current limit resistor discharge resistance storage capacitor c s 150pf r c 50m to 100m r d 330 w high- voltage dc source device under test figure 6. iec1000-4-2 esd test model t r = 0.7ns to 1ns 30ns 60ns t 100% 90% 10% i peak i r r y z v od v oc figure 8. driver dc test load figure 7. iec1000-4-2 esd generator current waveform receiver output test point 1k 1k s1 s2 v cc c rl 15pf figure 9. receiver timing test load charge current limit resistor discharge resistance storage capacitor c s 100pf r c 1m r d 1500 w high voltage dc source device under test figure 4. human body esd test model i p 100% 90% 36.8% t rl time t dl current waveform peak-to-peak ringing (not drawn to scale) i r 10% 0 0 amperes figure 5. human body model current waveform
max481e/max483e/max485e/max487e?ax491e/max1487e ?5kv esd-protected, slew-rate-limited, low-power, rs-485/rs-422 transceivers ______________________________________________________________________________________ 11 di de 3v y z c l1 c l2 a b ro re r diff v id output under test 500 w s1 s2 v cc c l figure 10. driver/receiver timing test circuit figure 11. driver timing test load di 3v 0v z y v o 0v -v o v o 1.5v t plh 1/2 v o 10% t r 90% 90% t phl 1.5v 1/2 v o 10% t f v diff = v (y) - v (z) v diff t skew = | t plh - t phl | output normally low output normally high 3v 0v y, z v ol y, z 0v 1.5v 1.5v v ol +0.5v v oh -0.5v 2.3v 2.3v t zl(shdn) , t zl t lz t zh(shdn) , t zh t hz de figure 12. driver propagation delays figure 13. driver enable and disable times (except max488e and max490e) v oh v ol v id -v id 1.5v 0v 1.5v output input 0v ro a-b t plh t phl output normally low output normally high 3v 0v v cc ro ro 0v 1.5v 1.5v v ol + 0.5v v oh - 0.5v 1.5v 1.5v t zl(shdn) , t zl t lz t zh(shdn) , t zh t hz re figure 14. receiver propagation delays f igure 15. receiver enable and disable times (except max488e and max490e)
max481e/max483e/max485e/max487e?ax491e/max1487e ?5kv esd-protected, slew-rate-limited, low-power, rs-485/rs-422 transceivers 12 ______________________________________________________________________________________ the major difference between tests done using the human body model and iec1000-4-2 is higher peak current in iec1000-4-2, because series resistance is lower in the iec1000-4-2 model. hence, the esd with- stand voltage measured to iec1000-4-2 is generally lower than that measured using the human body model. figure 7 shows the current waveform for the 8kv iec1000-4-2 esd contact-discharge test. the air-gap test involves approaching the device with a charged probe. the contact-discharge method connects the probe to the device before the probe is energized. machine model the machine model for esd tests all pins using a 200pf storage capacitor and zero discharge resis- tance. its objective is to emulate the stress caused by contact that occurs with handling and assembly during manufacturing. of course, all pins require this protec- tion during manufacturing?ot just inputs and outputs. therefore, after pc board assembly, the machine model is less relevant to i/o ports. max487e/max1487e: 128 transceivers on the bus the 48k , 1/4-unit-load receiver input impedance of the max487e and max1487e allows up to 128 transceivers on a bus, compared to the 1-unit load (12k input impedance) of standard rs-485 drivers (32 transceivers maximum). any combination of max487e/max1487e and other rs-485 transceivers with a total of 32 unit loads or less can be put on the bus. the max481e, max483e, max485e, and max488e?ax491e have standard 12k receiver input impedance. max483e/max487e/max488e/max489e: reduced emi and reflections the max483e and max487e?ax489e are slew-rate limited, minimizing emi and reducing reflections caused by improperly terminated cables. figure 16 shows the driver output waveform and its fourier analy- sis of a 150khz signal transmitted by a max481e, max485e, max490e, max491e, or max1487e. high- frequency harmonics with large amplitudes are evident. figure 17 shows the same information displayed for a max483e, max487e, max488e, or max489e transmit- ting under the same conditions. figure 17? high-fre- quency harmonics have much lower amplitudes, and the potential for emi is significantly reduced. low-power shutdown mode (max481e/max483e/max487e) a low-power shutdown mode is initiated by bringing both re high and de low. the devices will not shut down unless both the driver and receiver are disabled. in shutdown, the devices typically draw only 0.5? of supply current. re and de may be driven simultaneously; the parts are guaranteed not to enter shutdown if re is high and de is low for less than 50ns. if the inputs are in this state for at least 600ns, the parts are guaranteed to enter shutdown. for the max481e, max483e, and max487e, the t zh and t zl enable times assume the part was not in the low-power shutdown state (the max485e, max488e max491e, and max1487e can not be shut down). the t zh(shdn) and t zl(shdn) enable times assume the parts were shut down (see electrical characteristics ). 500khz/div 0hz 5mhz 10db/div figure 16. driver output waveform and fft plot of max485e/max490e/max491e/max1487e transmitting a 150khz signal 500khz/div 0hz 5mhz 10db/div figure 17. driver output waveform and fft plot of max483e/max487e?ax489e transmitting a 150khz signal
max481e/max483e/max485e/max487e?ax491e/max1487e ?5kv esd-protected, slew-rate-limited, low-power, rs-485/rs-422 transceivers ______________________________________________________________________________________ 13 it takes the drivers and receivers longer to become enabled from the low-power shutdown state (t zh(shdn ) , t zl(shdn) ) than from the operating mode (t zh , t zl ). (the parts are in operating mode if the re , de inputs equal a logical 0,1 or 1,1 or 0, 0.) driver output protection excessive output current and power dissipation caused by faults or by bus contention are prevented by two mechanisms. a foldback current limit on the output stage provides immediate protection against short circuits over the whole common-mode voltage range (see typical operating characteristics ). in addition, a thermal shut- down circuit forces the driver outputs into a high-imped- ance state if the die temperature rises excessively. propagation delay many digital encoding schemes depend on the differ- ence between the driver and receiver propagation delay times. typical propagation delays are shown in figures 19?2 using figure 18? test circuit. the difference in receiver delay times, t plh - t phl , is typically under 13ns for the max481e, max485e, max490e, max491e, and max1487e, and is typically less than 100ns for the max483e and max487e max489e. the driver skew times are typically 5ns (10ns max) for the max481e, max485e, max490e, max491e, and max1487e, and are typically 100ns (800ns max) for the max483e and max487e?ax489e. typical applications the max481e, max483e, max485e, max487e max491e, and max1487e transceivers are designed for bidirectional data communications on multipoint bus transmission lines. figures 25 and 26 show typical net- work application circuits. these parts can also be used as line repeaters, with cable lengths longer than 4000 feet. to minimize reflections, the line should be terminated at both ends in its characteristic impedance, and stub lengths off the main line should be kept as short as possi- ble. the slew-rate-limited max483e and max487e max489e are more tolerant of imperfect termination. bypass the v cc pin with 0.1?. isolated rs-485 for isolated rs-485 applications, see the max253 and max1480 data sheets. line length vs. data rate the rs-485/rs-422 standard covers line lengths up to 4000 feet. figures 23 and 24 show the system differen- tial voltage for the parts driving 4000 feet of 26awg twisted-pair wire at 110khz into 100 loads. 100pf 100pf r = 54 w a b y d z r receiver out ttl in t r , t f < 6ns figure 18. receiver propagation delay test circuit
max481e/max483e/max485e/max487e?ax491e/max1487e ?5kv esd-protected, slew-rate-limited, low-power, rs-485/rs-422 transceivers 14 ______________________________________________________________________________________ 25ns/div 5v/div ro b a 500mv/div figure 19. max481e/max485e/max490e/max1487e receiver t phl 25ns/div 5v/div ro b a 500mv/div figure 20. max481e/max485e/max490e/max491e/ max1487e receiver t plh 200ns/div 5v/div ro b a 500mv/div figure 21. max483e/max487e?ax489e receiver t phl 200ns/div 5v/div ro b a 500mv/div figure 22. max483e/max487e?ax489e receiver t plh 2 m s/div do 0v 0v 5v 5v -1v 0 di v a - v b figure 23. max481e/max485e/max490e/max491e/ max1487e system differential voltage at 110khz driving 4000ft of cable 2 m s/div do 0v 0v 5v 5v -1v 1v 0 di v b - v a figure 24. max483e/max1487e?ax489e system differential voltage at 110khz driving 4000ft of cable
max481e/max483e/max485e/max487e?ax491e/max1487e ?5kv esd-protected, slew-rate-limited, low-power, rs-485/rs-422 transceivers ______________________________________________________________________________________ 15 figure 26. max488e?ax491e full-duplex rs-485 network 120 w 120 w r d ro re de di a b y 120 w 120 w di di di ro ro ro de de de re re re z z z z y y y aa a bb b d d d r r r max488e max489e max490e max491e note: re and de on max489e/max491e only. di ro de re a b re re re ro ro ro di di di de de de d d d r r r b b b a a a 120 w 120 w d r max481e max483e max485e max487e max1487e figure 25. max481e/max483e/max485e/max487e/max1487e typical half-duplex rs-485 network
max481e/max483e/max485e/max487e?ax491e/max1487e ?5kv esd-protected, slew-rate-limited, low-power, rs-485/rs-422 transceivers maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circu it patent licenses are implied. maxim reserves the right to change the circuitry and specifications without notice at any time. 16 ____________________maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 2003 maxim integrated products printed usa is a registered trademark of maxim integrated products. package information for the latest package outline information, go to www.maxim-ic.com/packages . ordering information (continued) part temp range pin-package max485e cpa 0? to +70? 8 plastic dip max485ecsa 0? to +70? 8 so max485eepa -40? to +85? 8 plastic dip max485eesa -40? to +85? 8 so max487e cpa 0? to +70? 8 plastic dip max487ecsa 0? to +70? 8 so max487eepa -40? to +85? 8 plastic dip max487eesa -40? to +85? 8 so max488e cpa 0? to +70? 8 plastic dip max488ecsa 0? to +70? 8 so max488eepa -40? to +85? 8 plastic dip max488eesa -40? to +85? 8 so max489e cpd 0? to +70? 14 plastic dip max489ecsd 0? to +70? 14 so part temp range pin-package max489eepd -40? to +85? 14 plastic dip max489eesd -40? to +85? 14 so max490e cpa 0? to +70? 8 plastic dip max490ecsa 0? to +70? 8 so max490eepa -40? to +85? 8 plastic dip max490eesa -40? to +85? 8 so max491e cpd 0? to +70? 14 plastic dip max491ecsd 0? to +70? 14 so max491eepd -40? to +85? 14 plastic dip max491eesd -40? to +85? 14 so max1487e cpa 0? to +70? 8 plastic dip max1487ecsa 0? to +70? 8 so max1487eepa -40? to +85? 8 plastic dip max1487eesa -40? to +85? 8 so part number half/full duplex data rate (mbps) slew- rate limited low-power shutdown receiver/ driver enable quiescent current (a) number of transmitters on bus pin count max481e half 2.5 no yes yes 300 32 8 max483e half 0.25 yes yes yes 120 32 8 max485e half 2.5 no no yes 300 32 8 max487e half 0.25 yes yes yes 120 128 8 max488e full 0.25 yes no no 120 32 8 max489e full 0.25 yes no yes 120 32 14 max490e full 2.5 no no no 300 32 8 max491e full 2.5 no no yes 300 32 14 max1487e half 2.5 no no yes 230 128 8 selector guide chip information transistor count: 295
e nglish ? ???? ? ??? ? ??? what's ne w p roducts solutions de sign ap p note s sup p ort buy comp any me mbe rs m axim > p roduc ts > i nterfac e and i nterc onnec t p rotec tion and i s olation max1487e, max481e, max483e, max485e, max487e, max488e, max489e, max490e, max491e 15kv esd-protected, slew-rate-limited, low-power, rs-485/rs-422 transceivers quickview technical documents ordering info more information all ordering information notes: other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales . 1. didn't find what you need? ask our applications engineers. expert assistance in finding parts, usually within one business day. 2. part number suffixes: t or t&r = tape and reel; + = rohs/lead-free; # = rohs/lead-exempt. more: see full data sheet or part naming c onventions . 3. * some packages have variations, listed on the drawing. "pkgc ode/variation" tells which variation the product uses. 4. devices: 1-128 of 128 m ax1487e fre e sam ple buy pack age : type pins footprint drawing code/var * te m p rohs/le ad-fre e ? m ate rials analys is max1487ec pa pdip;8 pin;82 mm dwg: 21-0043d (pdf) use pkgcode/variation: p8-2 * 0c to +70c rohs/lead-free: no materials analysis max1487ec pa+ pdip;8 pin;82 mm dwg: 21-0043d (pdf) use pkgcode/variation: p8+2 * 0c to +70c rohs/lead-free: lead free materials analysis max1487eepa+ pdip;8 pin;82 mm dwg: 21-0043d (pdf) use pkgcode/variation: p8+2 * -40c to +85c rohs/lead-free: lead free materials analysis max1487eepa pdip;8 pin;82 mm dwg: 21-0043d (pdf) use pkgcode/variation: p8-2 * -40c to +85c rohs/lead-free: no materials analysis max1487eesa+g104 soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8+5 * -40c to +85c rohs/lead-free: lead free materials analysis max1487ec sa-t soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8-5 * 0c to +70c rohs/lead-free: no materials analysis max1487ec sa+t soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8+5 * 0c to +70c rohs/lead-free: lead free materials analysis max1487ec sa+ soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8+5 * 0c to +70c rohs/lead-free: lead free materials analysis max1487ec sa soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8-5 * 0c to +70c rohs/lead-free: no materials analysis max1487eesa+ soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8+5 * -40c to +85c rohs/lead-free: lead free materials analysis max1487eesa-t soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8-5 * -40c to +85c rohs/lead-free: no materials analysis max1487eesa soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8-5 * -40c to +85c rohs/lead-free: no materials analysis
max1487eesa+t soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8+5 * -40c to +85c rohs/lead-free: lead free materials analysis max1487ec ua umax;8 pin;16 mm dwg: 21-0036j (pdf) use pkgcode/variation: u8-1 * 0c to +70c rohs/lead-free: no materials analysis max1487ec ua-t umax;8 pin;16 mm dwg: 21-0036j (pdf) use pkgcode/variation: u8-1 * 0c to +70c rohs/lead-free: no materials analysis m ax481e fre e sam ple buy pack age : type pins footprint drawing code/var * te m p rohs/le ad-fre e ? m ate rials analys is max481ec pa+ pdip;8 pin;82 mm dwg: 21-0043d (pdf) use pkgcode/variation: p8+2 * 0c to +70c rohs/lead-free: lead free materials analysis max481ec pa pdip;8 pin;82 mm dwg: 21-0043d (pdf) use pkgcode/variation: p8-2 * 0c to +70c rohs/lead-free: no materials analysis max481eepa pdip;8 pin;82 mm dwg: 21-0043d (pdf) use pkgcode/variation: p8-2 * -40c to +85c rohs/lead-free: no materials analysis max481eepa+ pdip;8 pin;82 mm dwg: 21-0043d (pdf) use pkgcode/variation: p8+2 * -40c to +85c rohs/lead-free: lead free materials analysis max481ec sa+ soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8+5 * 0c to +70c rohs/lead-free: lead free materials analysis max481ec sa+t soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8+5 * 0c to +70c rohs/lead-free: lead free materials analysis max481ec sa soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8-5 * 0c to +70c rohs/lead-free: no materials analysis max481ec sa-t soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8-5 * 0c to +70c rohs/lead-free: no materials analysis max481eesa+ soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8+5 * -40c to +85c rohs/lead-free: lead free materials analysis max481eesa soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8-5 * -40c to +85c rohs/lead-free: no materials analysis max481eesa+t soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8+5 * -40c to +85c rohs/lead-free: lead free materials analysis max481eesa-t soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8-5 * -40c to +85c rohs/lead-free: no materials analysis max481ec ua umax;8 pin;16 mm dwg: 21-0036j (pdf) use pkgcode/variation: u8-1 * 0c to +70c rohs/lead-free: see data sheet materials analysis max481ec ua-t umax;8 pin;16 mm dwg: 21-0036j (pdf) use pkgcode/variation: u8-1 * 0c to +70c rohs/lead-free: see data sheet materials analysis m ax483e fre e sam ple buy pack age : type pins footprint drawing code/var * te m p rohs/le ad-fre e ? m ate rials analys is max483ec pa+ pdip;8 pin;82 mm dwg: 21-0043d (pdf) use pkgcode/variation: p8+2 * 0c to +70c rohs/lead-free: lead free materials analysis max483ec pa pdip;8 pin;82 mm dwg: 21-0043d (pdf) use pkgcode/variation: p8-2 * 0c to +70c rohs/lead-free: no materials analysis max483eepa pdip;8 pin;82 mm dwg: 21-0043d (pdf) use pkgcode/variation: p8-2 * -40c to +85c rohs/lead-free: no materials analysis max483eepa+ pdip;8 pin;82 mm dwg: 21-0043d (pdf) use pkgcode/variation: p8+2 * -40c to +85c rohs/lead-free: lead free materials analysis
max483ec sa+t soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8+5 * 0c to +70c rohs/lead-free: lead free materials analysis max483ec sa+ soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8+5 * 0c to +70c rohs/lead-free: lead free materials analysis max483ec sa-t soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8-5 * 0c to +70c rohs/lead-free: no materials analysis max483ec sa soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8-5 * 0c to +70c rohs/lead-free: no materials analysis max483eesa+ soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8+5 * -40c to +85c rohs/lead-free: lead free materials analysis max483eesa-t soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8-5 * -40c to +85c rohs/lead-free: no materials analysis max483eesa soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8-5 * -40c to +85c rohs/lead-free: no materials analysis max483eesa+t soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8+5 * -40c to +85c rohs/lead-free: lead free materials analysis max483ec ua-t umax;8 pin;16 mm dwg: 21-0036j (pdf) use pkgcode/variation: u8-1 * 0c to +70c rohs/lead-free: no materials analysis max483ec ua umax;8 pin;16 mm dwg: 21-0036j (pdf) use pkgcode/variation: u8-1 * 0c to +70c rohs/lead-free: no materials analysis m ax485e fre e sam ple buy pack age : type pins footprint drawing code/var * te m p rohs/le ad-fre e ? m ate rials analys is max485eepa+g104 pdip;8 pin;82 mm dwg: 21-0043d (pdf) use pkgcode/variation: p8+2 * -40c to +85c rohs/lead-free: lead free materials analysis max485ec pa+ pdip;8 pin;82 mm dwg: 21-0043d (pdf) use pkgcode/variation: p8+2 * 0c to +70c rohs/lead-free: lead free materials analysis max485ec pa pdip;8 pin;82 mm dwg: 21-0043d (pdf) use pkgcode/variation: p8-2 * 0c to +70c rohs/lead-free: no materials analysis max485eepa+ pdip;8 pin;82 mm dwg: 21-0043d (pdf) use pkgcode/variation: p8+2 * -40c to +85c rohs/lead-free: lead free materials analysis max485eepa pdip;8 pin;82 mm dwg: 21-0043d (pdf) use pkgcode/variation: p8-2 * -40c to +85c rohs/lead-free: no materials analysis max485ec sa soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8-5 * 0c to +70c rohs/lead-free: no materials analysis max485ec sa-t soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8-5 * 0c to +70c rohs/lead-free: no materials analysis max485ec sa+ soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8+5 * 0c to +70c rohs/lead-free: lead free materials analysis max485ec sa+t soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8+5 * 0c to +70c rohs/lead-free: lead free materials analysis max485eesa+ soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8+5 * -40c to +85c rohs/lead-free: lead free materials analysis max485eesa soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8-5 * -40c to +85c rohs/lead-free: no materials analysis max485eesa-t soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8-5 * -40c to +85c rohs/lead-free: no materials analysis
max485eesa+t soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8+5 * -40c to +85c rohs/lead-free: lead free materials analysis max485ec ua-t umax;8 pin;16 mm dwg: 21-0036j (pdf) use pkgcode/variation: u8-1 * 0c to +70c rohs/lead-free: see data sheet materials analysis max485ec ua umax;8 pin;16 mm dwg: 21-0036j (pdf) use pkgcode/variation: u8-1 * 0c to +70c rohs/lead-free: see data sheet materials analysis m ax487e fre e sam ple buy pack age : type pins footprint drawing code/var * te m p rohs/le ad-fre e ? m ate rials analys is max487ec pa+ pdip;8 pin;82 mm dwg: 21-0043d (pdf) use pkgcode/variation: p8+2 * 0c to +70c rohs/lead-free: lead free materials analysis max487ec pa pdip;8 pin;82 mm dwg: 21-0043d (pdf) use pkgcode/variation: p8-2 * 0c to +70c rohs/lead-free: no materials analysis max487eepa+ pdip;8 pin;82 mm dwg: 21-0043d (pdf) use pkgcode/variation: p8+2 * -40c to +85c rohs/lead-free: lead free materials analysis max487eepa pdip;8 pin;82 mm dwg: 21-0043d (pdf) use pkgcode/variation: p8-2 * -40c to +85c rohs/lead-free: no materials analysis max487ec sa soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8-5 * 0c to +70c rohs/lead-free: no materials analysis max487ec sa-t soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8-5 * 0c to +70c rohs/lead-free: no materials analysis max487ec sa+ soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8+5 * 0c to +70c rohs/lead-free: lead free materials analysis max487ec sa+t soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8+5 * 0c to +70c rohs/lead-free: lead free materials analysis max487eesa+ soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8+5 * -40c to +85c rohs/lead-free: lead free materials analysis max487eesa soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8-5 * -40c to +85c rohs/lead-free: no materials analysis max487eesa+t soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8+5 * -40c to +85c rohs/lead-free: lead free materials analysis max487eesa-t soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8-5 * -40c to +85c rohs/lead-free: no materials analysis max487ec ua-t umax;8 pin;16 mm dwg: 21-0036j (pdf) use pkgcode/variation: u8-1 * 0c to +70c rohs/lead-free: see data sheet materials analysis max487ec ua umax;8 pin;16 mm dwg: 21-0036j (pdf) use pkgcode/variation: u8-1 * 0c to +70c rohs/lead-free: see data sheet materials analysis m ax488e fre e sam ple buy pack age : type pins footprint drawing code/var * te m p rohs/le ad-fre e ? m ate rials analys is max488ec pa pdip;8 pin;82 mm dwg: 21-0043d (pdf) use pkgcode/variation: p8-2 * 0c to +70c rohs/lead-free: no materials analysis max488ec pa+ pdip;8 pin;82 mm dwg: 21-0043d (pdf) use pkgcode/variation: p8+2 * 0c to +70c rohs/lead-free: lead free materials analysis max488eepa+ pdip;8 pin;82 mm dwg: 21-0043d (pdf) use pkgcode/variation: p8+2 * -40c to +85c rohs/lead-free: lead free materials analysis max488eepa pdip;8 pin;82 mm dwg: 21-0043d (pdf) use pkgcode/variation: p8-2 * -40c to +85c rohs/lead-free: no materials analysis
max488ec sa+t soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8+5 * 0c to +70c rohs/lead-free: lead free materials analysis max488ec sa soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8-5 * 0c to +70c rohs/lead-free: no materials analysis max488ec sa-t soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8-5 * 0c to +70c rohs/lead-free: no materials analysis max488ec sa+ soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8+5 * 0c to +70c rohs/lead-free: lead free materials analysis max488eesa-t soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8-5 * -40c to +85c rohs/lead-free: no materials analysis max488eesa+t soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8+5 * -40c to +85c rohs/lead-free: lead free materials analysis max488eesa+ soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8+5 * -40c to +85c rohs/lead-free: lead free materials analysis max488eesa soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8-5 * -40c to +85c rohs/lead-free: no materials analysis max488ec ua-t umax;8 pin;16 mm dwg: 21-0036j (pdf) use pkgcode/variation: u8-1 * 0c to +70c rohs/lead-free: see data sheet materials analysis max488ec ua umax;8 pin;16 mm dwg: 21-0036j (pdf) use pkgcode/variation: u8-1 * 0c to +70c rohs/lead-free: see data sheet materials analysis m ax489e fre e sam ple buy pack age : type pins footprint drawing code/var * te m p rohs/le ad-fre e ? m ate rials analys is max489ec pd pdip;14 pin;160 mm dwg: 21-0043d (pdf) use pkgcode/variation: p14-3 * 0c to +70c rohs/lead-free: no materials analysis max489ec pd+ pdip;14 pin;160 mm dwg: 21-0043d (pdf) use pkgcode/variation: p14+3 * 0c to +70c rohs/lead-free: lead free materials analysis max489eepd pdip;14 pin;160 mm dwg: 21-0043d (pdf) use pkgcode/variation: p14-3 * -40c to +85c rohs/lead-free: no materials analysis max489eepd+ pdip;14 pin;160 mm dwg: 21-0043d (pdf) use pkgcode/variation: p14+3 * -40c to +85c rohs/lead-free: lead free materials analysis max489ec sd-t soic ;14 pin;54 mm dwg: 21-0041b (pdf) use pkgcode/variation: s14-4 * 0c to +70c rohs/lead-free: no materials analysis max489ec sd soic ;14 pin;54 mm dwg: 21-0041b (pdf) use pkgcode/variation: s14-4 * 0c to +70c rohs/lead-free: no materials analysis max489ec sd+ soic ;14 pin;54 mm dwg: 21-0041b (pdf) use pkgcode/variation: s14+4 * 0c to +70c rohs/lead-free: lead free materials analysis max489ec sd+t soic ;14 pin;54 mm dwg: 21-0041b (pdf) use pkgcode/variation: s14+4 * 0c to +70c rohs/lead-free: lead free materials analysis max489eesd+ soic ;14 pin;54 mm dwg: 21-0041b (pdf) use pkgcode/variation: s14+4 * -40c to +85c rohs/lead-free: lead free materials analysis max489eesd-t soic ;14 pin;54 mm dwg: 21-0041b (pdf) use pkgcode/variation: s14-4 * -40c to +85c rohs/lead-free: no materials analysis max489eesd soic ;14 pin;54 mm dwg: 21-0041b (pdf) use pkgcode/variation: s14-4 * -40c to +85c rohs/lead-free: no materials analysis max489eesd+t soic ;14 pin;54 mm dwg: 21-0041b (pdf) use pkgcode/variation: s14+4 * -40c to +85c rohs/lead-free: lead free materials analysis
m ax490e fre e sam ple buy pack age : type pins footprint drawing code/var * te m p rohs/le ad-fre e ? m ate rials analys is max490ec pa pdip;8 pin;82 mm dwg: 21-0043d (pdf) use pkgcode/variation: p8-2 * 0c to +70c rohs/lead-free: no materials analysis max490ec pa+ pdip;8 pin;82 mm dwg: 21-0043d (pdf) use pkgcode/variation: p8+2 * 0c to +70c rohs/lead-free: lead free materials analysis max490eepa pdip;8 pin;82 mm dwg: 21-0043d (pdf) use pkgcode/variation: p8-2 * -40c to +85c rohs/lead-free: no materials analysis max490eepa+ pdip;8 pin;82 mm dwg: 21-0043d (pdf) use pkgcode/variation: p8+2 * -40c to +85c rohs/lead-free: lead free materials analysis max490ec sa-g071 soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8-5 * 0c to +70c rohs/lead-free: no materials analysis max490ec sa-tg071 soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8-5 * 0c to +70c rohs/lead-free: no materials analysis max490ec sa+t soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8+5 * 0c to +70c rohs/lead-free: lead free materials analysis max490ec sa soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8-5 * 0c to +70c rohs/lead-free: no materials analysis max490ec sa-t soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8-5 * 0c to +70c rohs/lead-free: no materials analysis max490ec sa+ soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8+5 * 0c to +70c rohs/lead-free: lead free materials analysis max490eesa+t soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8+5 * -40c to +85c rohs/lead-free: lead free materials analysis max490eesa+ soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8+5 * -40c to +85c rohs/lead-free: lead free materials analysis max490eesa soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8-5 * -40c to +85c rohs/lead-free: no materials analysis max490eesa-t soic ;8 pin;31 mm dwg: 21-0041b (pdf) use pkgcode/variation: s8-5 * -40c to +85c rohs/lead-free: no materials analysis max490ec ua umax;8 pin;16 mm dwg: 21-0036j (pdf) use pkgcode/variation: u8-1 * 0c to +70c rohs/lead-free: see data sheet materials analysis max490ec ua-t umax;8 pin;16 mm dwg: 21-0036j (pdf) use pkgcode/variation: u8-1 * 0c to +70c rohs/lead-free: see data sheet materials analysis m ax491e fre e sam ple buy pack age : type pins footprint drawing code/var * te m p rohs/le ad-fre e ? m ate rials analys is max491ec sd-tg002 0c to +70c rohs/lead-free: see data sheet max491ec pd pdip;14 pin;160 mm dwg: 21-0043d (pdf) use pkgcode/variation: p14-3 * 0c to +70c rohs/lead-free: no materials analysis max491ec pd+ pdip;14 pin;160 mm dwg: 21-0043d (pdf) use pkgcode/variation: p14+3 * 0c to +70c rohs/lead-free: lead free materials analysis max491eepd+ pdip;14 pin;160 mm dwg: 21-0043d (pdf) use pkgcode/variation: p14+3 * -40c to +85c rohs/lead-free: lead free materials analysis max491eepd pdip;14 pin;160 mm dwg: 21-0043d (pdf) use pkgcode/variation: p14-3 * -40c to +85c rohs/lead-free: no materials analysis
max491ec sd-g002 soic ;14 pin;54 mm dwg: 21-0041b (pdf) use pkgcode/variation: s14-4 * 0c to +70c rohs/lead-free: no materials analysis max491ec sd+t soic ;14 pin;54 mm dwg: 21-0041b (pdf) use pkgcode/variation: s14+4 * 0c to +70c rohs/lead-free: lead free materials analysis max491ec sd soic ;14 pin;54 mm dwg: 21-0041b (pdf) use pkgcode/variation: s14-4 * 0c to +70c rohs/lead-free: no materials analysis max491ec sd-t soic ;14 pin;54 mm dwg: 21-0041b (pdf) use pkgcode/variation: s14-4 * 0c to +70c rohs/lead-free: no materials analysis max491ec sd+ soic ;14 pin;54 mm dwg: 21-0041b (pdf) use pkgcode/variation: s14+4 * 0c to +70c rohs/lead-free: lead free materials analysis max491eesd soic ;14 pin;54 mm dwg: 21-0041b (pdf) use pkgcode/variation: s14-4 * -40c to +85c rohs/lead-free: no materials analysis max491eesd+ soic ;14 pin;54 mm dwg: 21-0041b (pdf) use pkgcode/variation: s14+4 * -40c to +85c rohs/lead-free: lead free materials analysis max491eesd+t soic ;14 pin;54 mm dwg: 21-0041b (pdf) use pkgcode/variation: s14+4 * -40c to +85c rohs/lead-free: lead free materials analysis max491eesd-t soic ;14 pin;54 mm dwg: 21-0041b (pdf) use pkgcode/variation: s14-4 * -40c to +85c rohs/lead-free: no materials analysis didn't find what you need? next day product selection assistance from applications engineers parametric search applications help quickview technical documents ordering info more information des c ription key features a pplic ations /u s es key spec ific ations diagram data sheet a pplic ation n otes des ign guides e ngineering journals reliability reports software/m odels e valuation kits p ric e and a vailability samples buy o nline p ac kage i nformation lead-free i nformation related p roduc ts n otes and c omments e valuation kits doc ument ref.: 1 9 -0 4 1 0 ; rev 4 ; 2 0 0 4 -0 3 -3 0 t his page las t modified: 2 0 0 7 -0 7 -1 7 c ontac t us: send us an email c opyright 2 0 0 7 by m axim i ntegrated p roduc ts , dallas semic onduc tor ? legal n otic es ? p rivac y p olic y

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