View SP322CF-LTR_3030580.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

sp322ds/06 sp322 v.11/v.35 serial transceiver ? copyright 1997 sipex corporation date: 03/04/05 sp322 v.11/v.35 serial transceiver ? copyright 2005 sipex corporation 1 +5v only operation programmable v.11 or v.35 selection three differential v.11 transceivers in v.11 mode three differential v.35 transceivers in v.35 mode no external resistor termination for compliant v.35 operation v.11 cable termination (approx. 120 ? ) internally configured in v.11 mode tri-state capability on drivers and receivers ideal low cost solution for x.25 or frame relay serial ports sp322 programmable v.11/v.35 transceiver eia-530 wan v .35 ? sp322 6 10 11 12 15 20 22 23 25 30 33 34 35 40 44 1 5 en_r2 en_r3 r1in(a) r1in(b) r2in(a) r2in(b) r3in(a) r3in(b) t1in t2in t3in t1out(a) t1out(b) gnd vcc t2out(a) t2out(b) gnd vcc t3out(a) t3out(b) gnd en_r1 gnd vcc gnd r3out r2out r1out en_t1 en_t2 en_t3 vcc v .11/v.35 v .11_term sd vcc c1+ vdd c2+ gnd c1? c2? vss 9 8 7 13 14 16 17 18 19 21 24 26 27 28 29 31 32 36 37 38 39 41 42 43 2 3 4 the sp322 is a programmable v.11 or v.35 transceiver ic. the sp322 contains three drivers and three receivers when selected in each mode. the selection is done by the v.11/v.35 select pin. the v.11 transceivers can typically operate at 10mbps while adhering to the itu v.11 specifications. the v.35 transceivers can operate up to 10mbps while adhering to the itu v.35 specifications. the sp322 contains internal resistor termination for compliant v.35 operation as well as the v.11 termination on the receiver inputs for optional cable termination. each sp322 driver contains a control pin which disables the output and places the output pins in a high impedance state. each receiver also has a control pin which places the receiver outputs in a high impedance state. the enable pins will disconnect the internal termination network for whichever mode the sp322 is selected. for the receivers, the enable pin will place the input pins in a high impedance (approx. 15k ? ). this allows for convenient dte-dce configuration by connecting the driver outputs to the receiver inputs, thus allowing the enable pins to select the desired dte or dce operation description now available in lead free packaging
date: 03/04/05 sp322 v.11/v.35 serial transceiver ? copyright 2005 sipex corporation 2 typically 25 c @ vcc = +5v unless otherwise noted. min. typ. max. units conditions logic inputs v il 0.8 volts v ih 2.0 volts logic outputs v ol 0.4 volts i out = -3.2ma v oh 2.4 volts i out = 1.0ma v.35 driver dc characteristics outputs test terminated voltage 0.44 0.55 0.66 volts per figure 10 source impedance 50 100 150 ? per figure 11 short circuit impedance 135 150 165 ? per figure 12 offset 0.6 volts per figure 10 ac characteristics outputs transition time 40 ns per figure 13; 10% to 90% propagation delay t phl 40 70 100 ns per figures 18 and 19 t plh 40 70 100 ns per figures 18 and 19 max. transmission rate 10 mbps per figures 18 and 19 v.35 receiver dc characteristics inputs input sensitivity +80 mv input impedance 90 100 110 ? per figure 14 short circuit impedance 135 150 165 ? per figure 15 ac characteristics inputs propagation delay t phl 50 100 150 ns per figures 18 and 21 t plh 50 100 150 ns per figures 18 and 21 max. transmission rate 10 mbps per figure 18 absolute maximum ratings these are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. exposure to absolute maximum rating conditions for extended periods of time may affect reliability. v cc ...........................................................................+7v storage temperature..........................-65 ? c to +150 ? c power dissipation 44-pin plastic qfp...........................1500mw package derating: 44-pin plastic qfp ? ja ....................................................52 c/w electrical characteristics
sp322ds/06 sp322 v.11/v.35 serial transceiver ? copyright 1997 sipex corporation date: 03/04/05 sp322 v.11/v.35 serial transceiver ? copyright 2005 sipex corporation 3 v.11 driver dc characteristics outputs open circuit voltage 6.0 volts per figure 1 test terminated voltage 2.0 5.0 volts per figure 2 0.5v oc 0.67v oc volts balance 0.4 volts per figure 2 offset 3.0 volts per figure 2 short-circuit current 150 ma per figure 3 power-off current 100 a per figure 5 ac characteristics v cc = +5v for ac parameters outputs transition time 20 ns per figure 4; 10% to 90% propagation delay using c l =50pf t phl 50 80 100 ns per figures 18 and 19 t plh 50 80 100 ns per figures 18 and 19 differential skew 20 40 ns per figures 18 and 19 max. transmission rate 10 mbps v.11 receiver dc characteristics inputs common mode range ?7 +7 volts sensitivity 0.3 volts input current 3.25 ma per figures 6 and 7 current w/ 100 ? term. 60.75 ma per figures 8 and 9 ac characteristics v cc = +5v for ac parameters inputs propagation delay using c l =50pf t phl 50 110 150 ns per figures 18 and 21 t plh 50 110 150 ns per figures 18 and 21 differential skew 20 ns per figure 18 max. transmission rate 10 mbps enable timing driver enable time see figures 16 and 20 enable to low 90 500 ns c l =15pf, s 1 closed enable to high 90 500 ns c l =15pf, s 2 closed disable time see figures 16 and 20 disable from low 90 500 ns c l =15pf, s 1 closed disable from high 90 500 ns c l =15pf, s 2 closed receiver enable time see figures 17 and 22 enable to low 90 500 ns c l =15pf, s 1 closed enable to high 90 500 ns c l =15pf, s 2 closed disable time see figures 17 and 22 disable from low 90 500 ns c l =15pf, s 1 closed disable from high 90 500 ns c l =15pf, s 2 closed power requirements supply voltage v cc +4.75 +5.25 volts supply current i cc shutdown 4 a v.35 mode 45 ma driver outputs loaded with 100 ? v.11 mode 95 ma driver outputs loaded with 100 ? typically 25 c @ vcc = +5v unless otherwise noted. min. typ. max. units conditions electrical characteristics
date: 03/04/05 sp322 v.11/v.35 serial transceiver ? copyright 2005 sipex corporation 4 figure 1. v.11 driver output open-circuit voltage a b v oc 3.9k ? v oca v ocb c a b v t 50 ? v os c 50 ? a b c i sa i sb figure 2. v.11 driver output test terminated voltage figure 3. v.11 driver output short-circuit current a b c i xa 0.25v a b c i xb 0.25v v cc = 0v v cc = 0v figure 5. v.11 driver output power-off current figure 4. v.11 driver output rise/fall time a b 50 ? c 50 ? 50 ? v e oscilloscope test circuits...
sp322ds/06 sp322 v.11/v.35 serial transceiver ? copyright 1997 sipex corporation date: 03/04/05 sp322 v.11/v.35 serial transceiver ? copyright 2005 sipex corporation 5 a b c i ia 10v c i ib 10v a b a b c i ia 6v c i ib 6v a b 100 ? to 150 ? 100 ? to 150 ? +3.25ma ?3.25ma +10v +3v ?3v ?10v maximum input current v ersus voltage v .11 receiver i [ma] = v [v] / 0.1 +6v +3v ?3v ?6v maximum input current v ersus voltage v .11 receiver w/ optional cable termination (100 ? to 150 ? ) i [ma] = v [v] / 0.1 i [ma] = (v [v] ? 3) / 4.0 i [ma] = (v [v] ? 3) / 4.0 figure 6. v.11 receiver input current figure 7. v.11 receiver input iv graph figure 8. v.11 receiver input current w/ termination figure 9. v.11 receiver input graph w/ termination
date: 03/04/05 sp322 v.11/v.35 serial transceiver ? copyright 2005 sipex corporation 6 figure 10. v.35 driver output test terminated voltage figure 11. v.35 driver output source impedance a b 50 ? c 50 ? v t v os a b v 2 50 ? c 24khz, 550mv p-p sine wave v 1 figure 14. v.35 receiver input source impedance figure 13. v.35 driver output rise/fall time figure 15. v.35 receiver input short-circuit impedance figure 12. v.35 driver output short-circuit impedance a b c i sc 2v a b c 50 ? oscilloscope 50 ? 50 ? a b v 2 50 ? c 24khz, 550mv p-p sine wave v 1 a b c i sc 2v
sp322ds/06 sp322 v.11/v.35 serial transceiver ? copyright 1997 sipex corporation date: 03/04/05 sp322 v.11/v.35 serial transceiver ? copyright 2005 sipex corporation 7 figure 18. driver/receiver timing test circuit figure 16. driver timing test load #2 circuit figure 17. receiver timing test load circuit 500 ? c l output under t est s 1 s 2 v cc 1k ? 1k ? c rl receiver output s 1 s 2 t est point v cc figure 20. driver enable and disable times figure 19. driver propagation delays +3v 0v driver input b a driver output v o + differential output v a ? v b 0v v o ? 1.5v 1.5v t plh t r t f f = 1mhz; t r 10ns; t f 10ns v o 1/2v o 1/2v o t phl t skew = |t dplh - t dphl | t dphl t dplh switching waveforms... +3v 0v enable 5v v ol 0v 1.5v 1.5v t zl t zh f = 1mhz; t r < 10ns; t f < 10ns v oh a, b 2.3v 2.3v t lz t hz 0.5v 0.5v output normally low output normally high a, b 15pf r out a b a b t in c l1 c l2 v cc
date: 03/04/05 sp322 v.11/v.35 serial transceiver ? copyright 2005 sipex corporation 8 figure 22. receiver enable and disable times +3v 0v enable 5v receiver out 0v 1.5v 1.5v t zl t zh f = 1mhz; t r < 10ns; t f < 10ns 50% 50% t lz t hz 0.5v 0.5v output normally low output normally high v il v ih receiver out figure 23. typical v.11 driver output figure 24. typical v.35 driver output figure 21. receiver propagation delays v oh v ol receiver out 50% t plh f = 1mhz; t r 10ns; t f 10ns output v od2 + v od2 ? a ? b 0v 0v t phl input 50% enable
sp322ds/06 sp322 v.11/v.35 serial transceiver ? copyright 1997 sipex corporation date: 03/04/05 sp322 v.11/v.35 serial transceiver ? copyright 2005 sipex corporation 9 figure 26. sp322 typical operating circuit figure 25. sp322 pinout +5v 1.0 f sp322 gnd v .11_term 1.0 f 1.0 f 1.0 f c2? 1.0 f v cc c1+ c1? c2+ v dd v ss t1in t1 t1outa t2in t2 r1out t1outb t2outa t2outb t3in t3 t3outa r2out r3out t3outb r1 r2 r3 v .11/v.35 t1ena t2ena t3ena r1ena r2ena r3ena r2ina r2inb r3ina r3inb t t r1ina r1inb t charge pump sd sp322 6 10 11 12 15 20 22 23 25 30 33 34 35 40 44 1 5 en_r2 en_r3 r1in(a) r1in(b) r2in(a) r2in(b) r3in(a) r3in(b) t1in t2in t3in t1out(a) t1out(b) gnd vcc t2out(a) t2out(b) gnd vcc t3out(a) t3out(b) gnd en_r1 gnd vcc gnd r3out r2out r1out en_t1 en_t2 en_t3 vcc v .11/v.35 v .11_term sd vcc c1+ vdd c2+ gnd c1? c2? vss 9 8 7 13 14 16 17 18 19 21 24 26 27 28 29 31 32 36 37 38 39 41 42 43 2 3 4
date: 03/04/05 sp322 v.11/v.35 serial transceiver ? copyright 2005 sipex corporation 10 theory of operation the sp322 is a programmable v.11 or v.35 transceiver ic. it contains three driver and three receivers which can be configured to either v.11 or v.35 physical layer electrical characteristics. the transceivers within the sp322 include all the necessary termination resistor networks required for compliant v.11 and v.35 signals. this simplifies serial port designs using v.11 or v.35 where the engineer does not have to configure v.11 cable termination resistors and the v.35 network. the sp322 contains four basic blocks: the charge pump, differential drivers, differential receivers, termination network circuitry. each block is described in the following. charge?pump the sp322 charge pump is smaller version of the sipex ?atented design (u.s. 5,306,954). the charge pump still requires four external capacitors and uses a four?hase voltage shift- ing technique to attain symmetrical 10v power supplies. but the pump is only used for provid- ing internal biasing for the transceivers and the termination circuitry. the v dd and v ss outputs provide only 3ma of output current and should not be connected to bias other external circuitry. recommended charge pump capacitor values are 1 f or greater. the internal oscillator pro- vides a clock rate for the charge pump which typically operates at 15khz. drivers the sp322 has three differential drivers. there are two types of drivers includes within the sp322 : v.11 drivers and v.35 drivers. when configured in v.11 mode, the v.11 driv- ers produce a differential output compliant with the v.11 and rs-422 electrical specifications. this includes the all the dc electrical param- eters such as v oc , v t , v os , etc. the strength of the sp322 drivers allow them to also drive signals per the rs-485 standard. the v t mini- mum of 1.5v is provided by the driver output given a load of 54 ? as opposed to 2.0v with a 100 ? load for rs-422. however, the drivers are not intended to operate over the rs-485 com- mon mode range of +12v to -7v. the common mode range for the v.11 drivers is +7v to -7v which is in accordance to the itu v.11 specifi- cation. when in v.35 mode, the drivers provide v.35 signals compliant to the itu v.35 electrical specification. specifically, the v.35 driver is designed to supply a differential output of 0.55v with an offset of less than 0.6v. with sipex's patent-pending v.35 driver design, the driver also adheres to impedance measurements such as driver output source impedance (100 ? 50 ? ) and driver output short-circuit impedance (150 ? 15 ? ). traditional v.35 drivers require a resis- tor network to provide the proper v.35 imped- ance specifications for the driver outputs. the sp322 v.35 driver does this without the aid of any external components attached to the driver output. its unique design contains internal resistance matching and switching to provide compliant v.35 signals. each driver includes an enable pin for added convenience. the driver enable pins are low active and will tri-state the driver outputs if a logic "1" is applied. during this state, the drivers are high impedance. the enable pins include a pull-down resistor so that the pin can be unconnected where the driver will always be enabled. regardless of physical protocol, the drivers can operate to at least 10mbps. receivers the sp322 has three differential receivers which are used for either v.11 or v.35. the receivers have a 200mv sensitivity and operate over the common mode range of +7v to -7v. the receiver itself is the same in either v.11 or v.35 mode. the receiver input termination is config- ured differently for each mode (v.11/v.35 pin). the receivers also include enable pins for con- venience. the receiver enable pins are high active where a logic "0" will tri-state the re- ceiver outputs. during tri-state, the receiver inputs are approximately 12k ? . any termina- tion associated with the operating mode is dis- connected during tri-state of that receiver. the receiver enable pins have a pull-up resistor that allows the pins to be unconnected. the receiver will always be active in this case. the differen- tial receiver can operate to at least 10mbps.
sp322ds/06 sp322 v.11/v.35 serial transceiver ? copyright 1997 sipex corporation date: 03/04/05 sp322 v.11/v.35 serial transceiver ? copyright 2005 sipex corporation 11 termination circuitry unique to sipex , the sp322 provides internal resistor networks for v.35 as well as the cable termination for v.11. the resistor network for the v.35 receivers are configured as a typical v.35 receiver using two 51 ? resistors in series tied to the a and b inputs with a 124 ? center-tap resistor to ground. the network is internally switched on during v.35 mode (v.11/v.35 = v cc ) using high performance, low r on transis- tors. the transistors can operate efficiently over +7v to -7v, and can tolerate over +10v to -10v without damage. this termination provides the proper v.35 receiver input impedance of 100 ? and short-circuit impedance at 2v of 150 ? with 10% accuracy. the configuration for the v.11 receiver input resistor network is similar to the v.35 network except that the 124 ? resistor is disconnected (v.11/v.35 = 0v). a series resistor is also added increase the input impedance to over 120 ? for the v.11 cable termination. the minimum resistance per the itu v.11 specifica- tion is 100 ? . the v.11 termination can be switched off using the v.11_term pin. for a terminated v.11 receiver, this pin is at a logic "1". a logic "0" will inform the switches to disconnect the v.11 termination. shutdown the sp322 includes a shutdown pin (sd) which disables the charge pump and all power con- suming circuitry to provide low i cc . a logic "1" to the sd pin will shut down the sp322 where it will draw less than 20 a of current. net1/2 european compliancy as with all of sipex's previous multi-protocol transceiver ics, the sp322 drivers and receivers have been designed to meet all electrical specifications for itu v.11 and v.35. furthermore, it is internally tested and will pass the net1/2 physical layer testing requirements. please note that although the sp322 adheres to net1/2 testing, any complex or unusual configuration should be double-checked to ensure net compliance. consult factory for details. applications information the sp322 is designed for serial port applica- tions needing v.11 and v.35 transceivers. the sp322 supports a variety of physical layer protocols such as eia-530, eia-530a, rs-449, and v.36 where v.11 transceivers are used for clock and data signals. the termination resistors are recommended for crosstalk and reflections elimination under higher speed operation. internal termination solves many headaches and configuration hassles with implementing v.11 and v.35. the sp322 provides a simple, low- cost solution for the clock and data lines for synchronous serial ports. the handshaking lines such as cts, dtr, etc. can be implemented using discrete rs-422 or rs-232 transceivers, depending on the mode supported. sipex supplies either differential (v.11) or single- ended (v.28) discrete transceiver products to mate with the sp322 .
date: 03/04/05 sp322 v.11/v.35 serial transceiver ? copyright 2005 sipex corporation 12 44 pin mqfp (ms-022 bc) l1 5 -16 0 min. 0 ?7 5 -16 l 0.30" rad. typ. 0.20" rad. typ. c e1 1 d1 d c l c l -b- -d- -a- 1 e e seating plane a1 a a b a2 d2 e2 1 dimensions minimum/maximum (mm) symbol a a1 a2 b d d1 d2 e e1 e2 e n 44?pin mqfp jedec ms-022 (ab) variation min nom max 2.45 0.00 0.25 1.80 2.00 2.20 0.29 0.45 13.20 bsc 10.00 bsc 8.00 ref 13.20 bsc 10.00 bsc 8.00 ref 0.80 bsc 44 common dimentions symbl min nom max c 0.11 23.00 l 0.73 0.88 1.03 l1 1.60 basic package: 44 pin mqfp
sp322ds/06 sp322 v.11/v.35 serial transceiver ? copyright 1997 sipex corporation date: 03/04/05 sp322 v.11/v.35 serial transceiver ? copyright 2005 sipex corporation 13 ordering information model temperature range package types sp322cf ........................................................................... 0 c to +70 c ............................................................................................ 44?pin mqfp sp322cf-l ....................................................................... 0 c to +70 c ............................................................................................ 44?pin mqfp sipex corporation reserves the right to make changes to any products described herein. sipex does not assume any liability aris ing out of the application or use of any product or circuit described hereing; neither does it convey any license under its patent rights nor the rights of others. corporation analog excellence sipex corporation headquarters and sales office 233 south hillview drive milpitas, ca 95035 tel: (408) 934-7500 fax: (408) 935-7600 date revision description 1/27/04 a implemented tracking revision. 03/04/05 a added lead free ordering option. revision history click here to order samples available in lead free packaging. to order add "-l" suffix to part number. example: sp322cf = standard; sp331et-l = lead free

▲Up To Search▲

Price & Availability of SP322CF-LTR

	To Download SP322CF-LTR Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .