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exar corporation 48720 kato road, fremont ca, 94538 ? (510) 668-7000 ? fax (510) 668-7017 ? www.exar.com xr33032/35/38 wide supply 18v tolerant rs-485/rs-422 transceivers february 2014 rev. 1.0.0 general description the xr33032/35/38 family of high performance half duplex rs-485 transceivers are optimized to operate over a wide range of supply voltage, from +2.8v to +5.5v. the analog bus pins can withstand direct shorts up to 18v, and are protected against esd events up to 15kv. in an isolated application it may be more efficient to use a remote power supply rather than generating an isolated supply at every node. the xr33032/35/38 transceivers can operate with more than 2v ir drop in the cable when utilizing a remote 5v power supply. the transceivers draw less than 600a, and typically only 300a when idling with the receivers active. the receivers include full fail-safe circuitry, guarantee - ing a logic-high receiver output when the receiver inputs are open, shorted, or undriven. the receiver input impedance is 96k ? (1/8 unit load), allowing up to 256 devices on the bus while preserving the full signal margin. the drivers are protected by short circuit detection as well as thermal shutdown, and maintain high imped - ance in shutdown or when powered off. the xr33032 and xr33035 drivers are slew limited for reduced emi and error-free communication over long or untermi - nated data cables. the de and re pins include hot swap circuitry to pre - vent false transitions on the bus during power-up or live insertion, and can enter a low current shutdown mode (40na typically) for extreme power savings. features ? +2.8v to +5.5v operating range ? 18v fault tolerance on analog bus pins ? robust esd (electrostat ic discharge) protection: 15kv iec 61000-4-2 air gap discharge 8kv iec 61000-4-2 contact discharge 15kv human body model 4kv human body model on non-bus pins ? 300a idle current , 40na shutdown current ? enhanced receiver fail-safe protection for open, shorted, or terminated but idle data lines ? hot-swap glitch protection on de and re pins ? driver short circuit current limit and thermal shutdown for overload protection ? 1/8 th unit load allows up to 256 devices on bus ? industry standard 8 nsoic half duplex package typical applications ? isolated multipoint rs-485 data buses ? remote nodes powered by the host ? building automation and hvac ? industrial process control networks ? remote utility meter reading ? energy monitoring and control v cc b/z a/y gnd ro re de di 1 2 3 4 r d 8 7 6 5
xr33032/35/38 2 wide supply 18v tolerant rs-485/rs-422 transceivers rev. 1.0.0 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 to the specifications below is not implied. v cc -0.3v to +7.0v input voltage at cont rol and driver input ( re , de, and di) -0.3v to +7.0v receiver output voltage (ro) -0.3v to (v cc + 0.3v) driver output voltage (a and b) 18v receiver input voltage (a and b) 18v transient voltage pulse, through 100 ? figure 5 70v driver output current 250ma storage temperature range -65c to +150c lead temperature (soldering, 10s) +300c package power dissipation 8-pin so ? ja = 128.4c/w 14-pin so ? ja = 86c/w maximum junction temperature = +150c ordering information p art n umber d uplex d ata r ate p ackage t emperature r ange xr33032id-f half 250kbps 8-pin narrow soic -40c to +85c xr33032idtr-f half 250kbps 8-pin narrow soic -40c to +85c xr33035id-f half 1mbps 8-pin narrow soic -40c to +85c xr33035idtr-f half 1mbps 8-pin narrow soic -40c to +85c XR33038id-f half 10mbps 8-pin narrow soic -40c to +85c XR33038idtr-f half 10mbps 8-pin narrow soic -40c to +85c n ote : tr = tape and reel part numbers, -f = green / rohs compliant
xr33032/35/38 3 rev. 1.0.0 wide supply 18v tolerant rs-485/rs-422 transceivers electrical characteristics unless otherwise noted: v cc = +2.8v to +5.5v, t a = -40c to +85c. typical values are at v cc = 3.3v, t a = +25c. s ymbol p arameters m in . t yp . m ax . u nits c onditions driver dc characteristics v cc supply voltage range 2.8 5.5 v v od differential driver output, +3.0v ? v cc ? +5.5v 2 v cc v r l = 100 ? (rs-422), figure 2 1.5 v cc v r l = 54 ? (rs-485), figure 2 1.5 v cc v -7v ? v cm ? +12v, figure 3 v od differential driver output, +2.8v ? v cc ? +3.0v 1.8 v cc v r l = 100 ? (rs-422), figure 2 1.4 v cc v r l = 54 ? (rs-485), figure 2 1.1 v cc v -7v ? v cm ? +12v, figure 3 ? v od change in magnitude of differential output voltage -0.2 +0.2 v r l = 100 ? (rs-422), or ? r l = 54 ? (rs-485), ? figure 2 , note 1 v cm driver common-mode output voltage (steady state) v cc / 2 3 v ? v cm change in magnitude of common-mode output voltage -0.2 +0.2 v v ih logic high threshold (di, de, re ) 2.8 v +4.5v ? v cc ??? 5.5v 2.3 v +4.0v ? v cc ??? 4.5v 2.0 v +2.8v ? v cc ? +4.0v v il logic low threshold (di, de, re ) 0.8 v v hys input hysteresis (di, de, re ) 100 mv i in logic input current (di, de, re ) -1 +1 a 0v ? v in ? v cc , after first transition, note 2 logic input current (de and re ) -200 100 +200 a until first transition, note 2 i a, b input current (a and b) 125 a v out = +12v, de = 0v, v cc = 0v or +5.5v -100 a v out = -7v, de = 0v, ? v cc = 0v or +5.5v i ol output leakage (y and z) full duplex (note 2) 125 a v out = +12v, de = 0v, v cc = 0v or +5.5v -100 a v out = -7v, de = 0v, ? v cc = 0v or +5.5v i osd driver short-circuit output current -250 +250 ma -7v ? v out ? +12v, figure 4
xr33032/35/38 4 wide supply 18v tolerant rs-485/rs-422 transceivers rev. 1.0.0 driver thermal characteristics t ts thermal shutdown temperature 175 c junction temperature t tsh thermal shutdown hysteresis 15 c receiver dc characteristics v th receiver differential input threshold voltage (v a - v b ) -200 -125 -50 mv -7v ? v cm ? +12v ? v oh receiver input hysteresis 25 mv v cm = 0v v oh receiver output high voltage (ro) v cc -0.6 v i out = -1ma v ol receiver output low voltage (ro) 0.4 v i out = 1ma i ozr high-z receiver output current 1 a 0v ? v out ? v cc r in receiver input resistance 96 k ? -7v ? v cm ? +12v i osc receiver output short-circuit current 120 ma 0v ? v ro ? v cc supply current i cc supply current 400 600 a no load, re = 0v, de = v cc di = 0v 300 600 a no load, re = v cc , de = v cc di = 0v 300 500 a no load, re = 0v, de = 0v receiver a and b inputs open i shdn supply current in shutdown mode 0.040 1 a re = v cc , de = 0v esd protection esd protection for a, b, y, and z 15 kv human body model 15 kv iec 61000-4-2 airgap 8 kv iec 61000-4-2 contact esd protection for all other pins 4 kv human body model unless otherwise noted: v cc = +2.8v to +5.5v, t a = -40c to +85c. typical values are at v cc = 3.3v, t a = +25c. s ymbol p arameters m in .t yp .m ax .u nits c onditions
xr33032/35/38 5 rev. 1.0.0 wide supply 18v tolerant rs-485/rs-422 transceivers driver ac characteristics xr33032 (250kbps) t dplh driver prop. delay (low to high) 250 1500 ns c l = 50pf, r l = 54 ? , figure 6 t dphl driver prop. delay (high to low) 250 1500 ns | t dplh -t dphl | differential driver output skew 20 200 ns t dr , t df driver differential output ? rise or fall time 350 1600 ns maximum data rate 250 kbps 1/t ui , duty cycle 40 to 60% t dzh driver enable to output high 200 2500 ns c l = 50pf, r l = 500 ? , figure 7 t dzl driver enable to output low 200 2500 ns t dhz driver disable from output high 6 100 ns t dlz driver disable from output low 6 100 ns t dzh(shdn) driver enable from shutdown to ? output high 5500 ns c l = 50pf, r l = 500 ? , figure 7 t dzl(shdn) driver enable from shutdown to ? output low 5500 ns t shdn time to shutdown 50 200 600 ns notes 3 receiver ac characteristics xr33032 (250kbps) t rplh receiver prop. delay (low to high) 200 ns c l = 15pf, v id = 2v, v id rise and fall times < 15ns ? figure 8 t rphl receiver prop. delay (high to low) 200 ns | t rplh -t rphl | receiver propagation delay skew 30 ns maximum data rate 250 kbps 1/t ui , duty cycle 40 to 60% t rzh receiver enable to output high 50 ns c l = 15pf, r l = 1k ? , figure 9 t rzl receiver enable to output low 50 ns t rhz receiver disable from output high 50 ns t rlz receiver disable from output low 50 ns t rzh(shdn) receiver enable from shutdown ? to output high 3500 ns c l = 15pf, r l = 1k ? , figure 9 t rzl(shdn) receiver enable from shutdown ? to output low 3500 ns t shdn time to shutdown 50 200 600 ns notes 3 unless otherwise noted: v cc = +2.8v to +5.5v, t a = -40c to +85c. typical values are at v cc = 3.3v, t a = +25c. s ymbol p arameters m in .t yp .m ax .u nits c onditions
xr33032/35/38 6 wide supply 18v tolerant rs-485/rs-422 transceivers rev. 1.0.0 driver ac characteristics xr33035 (1mbps) t dplh driver prop. delay (low to high) 150 300 ns c l = 50pf, r l = 54 ? , figure 6 t dphl driver prop. delay (high to low) 150 300 ns | t dplh -t dphl | differential driver output skew 5 50 ns t dr , t df driver differential output ? rise or fall time 100 200 350 ns maximum data rate 1 mbps 1/t ui , duty cycle 40 to 60% t dzh driver enable to output high 1000 2500 ns c l = 50pf, r l = 500 ? , figure 7 t dzl driver enable to output low 1000 2500 ns t dhz driver disable from output high 60 100 ns t dlz driver disable from output low 60 100 ns t dzh(shdn) driver enable from shutdown to ? output high 3500 ns c l = 50pf, r l = 500 ? , figure 7 t dzl(shdn) driver enable from shutdown to ? output low 3500 ns t shdn time to shutdown 50 200 600 ns notes 3 receiver ac characteristics xr33035 (1mbps) t rplh receiver prop. delay (low to high) 200 ns c l = 15pf, v id = 2v, v id rise and fall times < 15ns ? figure 8 t rphl receiver prop. delay (high to low) 200 ns | t rplh -t rphl | receiver propagation delay skew 30 ns maximum data rate 1 mbps 1/t ui , duty cycle 40 to 60% t rzh receiver enable to output high 50 ns c l = 15pf, r l = 1k ? , figure 9 t rzl receiver enable to output low 50 ns t rhz receiver disable from output high 50 ns t rlz receiver disable from output low 50 ns t rzh(shdn) receiver enable from shutdown ? to output high 3500 ns c l = 15pf, r l = 1k ? , figure 9 t rzl(shdn) receiver enable from shutdown ? to output low 3500 ns t shdn time to shutdown 50 200 600 ns notes 3 unless otherwise noted: v cc = +2.8v to +5.5v, t a = -40c to +85c. typical values are at v cc = 3.3v, t a = +25c. s ymbol p arameters m in .t yp .m ax .u nits c onditions
xr33032/35/38 7 rev. 1.0.0 wide supply 18v tolerant rs-485/rs-422 transceivers driver ac characteristics XR33038 (10mbps) t dplh driver prop. delay (low to high) 30 ns c l = 50pf, r l = 54 ? , figure 6 t dphl driver prop. delay (high to low) 30 ns | t dplh -t dphl | differential driver output skew 5 ns t dr , t df driver differential output ? rise or fall time 25 ns maximum data rate 10 mbps 1/t ui , duty cycle 40 to 60% t dzh driver enable to output high 50 ns c l = 50pf, r l = 500 ? , figure 7 t dzl driver enable to output low 50 ns t dhz driver disable from output high 50 ns t dlz driver disable from output low 50 ns t dzh(shdn) driver enable from shutdown to ? output high 250 ns c l = 50pf, r l = 500 ? , figure 7 t dzl(shdn) driver enable from shutdown to ? output low 250 ns t shdn time to shutdown 50 200 600 ns notes 3 receiver ac characteristics XR33038 (10mbps) t rplh receiver prop. delay (low to high) 50 ns c l = 15pf, v id = 2v, v id rise and fall times < 15ns ? figure 8 t rphl receiver prop. delay (high to low) 50 ns | t rplh -t rphl | receiver propagation delay skew 5 ns maximum data rate 10 mbps 1/t ui , duty cycle 40 to 60% t rzh receiver enable to output high 50 ns c l = 15pf, r l = 1k ? , figure 9 t rzl receiver enable to output low 50 ns t rhz receiver disable from output high 50 ns t rlz receiver disable from output low 50 ns t rzh(shdn) receiver enable from shutdown ? to output high 2200 ns c l = 15pf, r l = 1k ? , figure 9 t rzl(shdn) receiver enable from shutdown ? to output low 2200 ns t shdn time to shutdown 50 200 600 ns notes 3 unless otherwise noted: v cc = +2.8v to +5.5v, t a = -40c to +85c. typical values are at v cc = 3.3v, t a = +25c. s ymbol p arameters m in .t yp .m ax .u nits c onditions
xr33032/35/38 8 wide supply 18v tolerant rs-485/rs-422 transceivers rev. 1.0.0 n ote : 1. change in magnitude of differential output voltage and change in magnitude of common mode output voltage are the changes in output volta ge when di input changes state. 2. the hot swap feature disables the de and re inputs for the first 10s after power is applied. following this time period these inputs are weakly pulled to their disabled state (low for de, high for re ) until the first transition, after which they become high impedance inputs. 3. the transceivers are put into shutdown by bringing re high and de low simultaneously for at least 600ns. if the control inputs are in this state for le ss than 50ns, the device is guaranteed to not enter shutdown. if the enable inputs are held in this state for at least 600ns the device is assured to be in shutdown. note that the receiver and driver enable times increase signific antly when coming out of shutdown. block diagrams f igure 1. h alf d uplex 8 nsoic v cc b/z a/y gnd ro re de di 1 2 3 4 r d 8 7 6 5
xr33032/35/38 9 rev. 1.0.0 wide supply 18v tolerant rs-485/rs-422 transceivers test figures f igure 2. d ifferential d river o utput v oltage f igure 3. d ifferential d river o utput v oltage over c ommon m ode f igure 4. d river o utput s hort c ircuit c urrent d v od v cm de = v cc di=0vorv cc z y r l 2 r l 2 d v od v cm 60 ? 375 ? 375 ? z y de = v cc di=0vorv cc d -7v to +12v v z y i osd de=0vorv cc di=0vorv cc
xr33032/35/38 10 wide supply 18v tolerant rs-485/rs-422 transceivers rev. 1.0.0 f igure 5. t ransient o ver - voltage t est c ircuit f igure 6. d river p ropagation d elay t est c ircuit & t iming d iagram 100 v test 15us duration 15 duty cycle transceiver, generator, or receiver aorz bory device powered on or powered off 3v 0v z y v od+ 0v v od- v od 1.5v 90% 10% 90% 10% t dr t df 1.5v t dplh t dphl di v od (v y -v z ) t skew =|t dphl t dplh | d v od r l c l z y de = v cc di
xr33032/35/38 11 rev. 1.0.0 wide supply 18v tolerant rs-485/rs-422 transceivers f igure 7. d river e nable and d isable t iming t est c ircuits & t iming d iagrams r l c l d testing z: di = 0v testing y: di = v cc de z y v out 3v 0v v oh v ol de v out v oh +v ol 2 v oh -0.25v 1.5v 1.5v t dzh t dhz r l c l d de v cc z y v out testing z: di = v cc testing y: di = 0v 3v 0v v oh v ol 1.5v 1.5v t dzl t dlz de v out v oh +v ol 2 v ol +0.25v
xr33032/35/38 12 wide supply 18v tolerant rs-485/rs-422 transceivers rev. 1.0.0 f igure 8. r eceiver p ropagation d elay t est c ircuit & t iming d iagram c l b a r re = 0v ro b a ro 1.5v t rplh t rphl +1v 0v -1v v oh v ol 1.5v
xr33032/35/38 13 rev. 1.0.0 wide supply 18v tolerant rs-485/rs-422 transceivers f igure 9. r eceiver e nable and d isable t est c ircuits & t iming d iagrams r l c l ro b a r re 3v 0v v oh 0v v oh 2 v oh -0.25v 1.5v 1.5v t rzh t rhz re v a =v cc v b =0v ro c l ro b a r re r l v cc 3v 0v v cc v ol v cc +v ol 2 v ol +0.25v 1.5v 1.5v t rzl t rlz re v a =0v v b =v cc ro
xr33032/35/38 14 wide supply 18v tolerant rs-485/rs-422 transceivers rev. 1.0.0 pin descriptions p in n umber p in n ame t ype d escription 1 ro out receiver output. when re is low and ? if (a-b) ? -50mv, ro is high. ? if (a-b) ? -200mv, ro is low. 2 re in receiver output enable (hot swap). when re is low, ro is enabled. when re is high, ro is high impedance. when re is high and de is low, shutdown mode is enabled. 3 de in driver output enable (hot swap). when de is high, outputs are enabled. when de is low, outputs are high impedance. when de is low and re is high, shutdown mode is enabled. 4 di in driver input. with de high, a low level on di forces non-inverting output low and inverting output high. similarly, a high level on di forces non-inverting output high and inverting output low. 5 gnd pwr ground. 6 a i/o non-inverting receiver input and ? non-inverting driver output. 7 b i/o inverting receiver input and ? inverting driver output. 8 v cc pwr power supply input. ? bypass to ground with 0.1 f capacitor.
xr33032/35/38 15 rev. 1.0.0 wide supply 18v tolerant rs-485/rs-422 transceivers product description the xr33032/35/38 rs-485/422 devices are part of exar?s high performance serial interface product line. the analog bus pins can survive direct shorts up to 18v, and are protected against esd events up to 15kv. enhanced failsafe standard rs-485 differential receivers will be in an indeterminate state whenever the analog bus pins are not being driven. the enhanced failsafe feature of the xr33032/35/38 family guarantees a logic-high receiver output when the receiver inputs are open, shorted, or when they are connected to a terminated transmission line with all drivers disabled. in a terminated bus with all transmitters disabled, the receivers? differential input voltage is pulled to 0v by the termination. the xr33032/35/38 family interprets 0v differential as a logic high with a minimum 50mv noise margin while maintaining compliance with the eia/tia-485 standard of 200mv. although the xr33032/35/38 family does not need failsafe biasing resistors, it can operate without issue if biasing is used. receiver input filtering xr33032 and xr33035 receivers incorporate internal filtering in addition to input hysteresis. this filtering enhances noise immunity by ignoring signals that do not meet a minimum pulse width of 30ns. receiver propagation delay increases slightly due to this filtering. the high speed XR33038 device does not have this input filtering. hot-swap capability when v cc is first applied the driver enable and receiver enable (de and re ) are held inactive for approximately 10 microseconds. during power ramp-up other system ics may drive unpredictable values, or tristated lines may be influenced by stray capacitance. the hot-swap feature prevents these devices from driving any output signal until power ha s stabilized. after the initial 10s, the driver and receiver enable pins are weakly pulled to their disabled states (low for de, high for re ) until the first transition. after the first transition, the de and re pins operate as high impedance inputs. if circuit boards are inserted into an energized backplane (commonly called "live insertion" or "hot-swap") power may suddenly be applied to all ci rcuits. without the hot-swap capabilit y, this situation could improperly enable the transceiver?s driver or receiver, driving invalid data onto shared busses and possibly causing driver contention or device damage. driver output protection two mechanisms prevent excessive output current and power dissipation caused by faults or by bus contention. first, a driver current limit on the output st age provides immediate protec tion against short circuits over the whole common-mode voltage range. second, a thermal-shutdown circuit forces the driver outputs into a high-impedance state if junction temperature becomes excessive. line length and terminations the rs-485/rs-422 standard covers line lengths up to 4000ft. maximum achievable line length is a function of the data rate, cable characteristics and environmental noise. termination prevents signal reflections by eliminating the impedance mismatches on a transmission line. line termination is generally used if rise and fall times are shorter than the roun d-trip signal propagation ti me. higher supply voltage will allow longer cables to be used.
xr33032/35/38 16 wide supply 18v tolerant rs-485/rs-422 transceivers rev. 1.0.0 15kv esd protection esd protection structures are incorporated on all pins to protect against electrostatic discharges encountered during handling, assembly and operation. the driver outputs and receiver inputs of the xr33032/35/38 have extra protection against static electricity. exar uses state of the art structures to protect these pins against esd of 15kv without damage. the esd structures withstand high esd in all states: normal operation, shutdown and powered down. after an esd event, the xr33032/35/38 keep operating without latch-up or damage. esd protection can be tested in various ways. the transmitter outputs and receiver inputs of the xr33032/35/ 38 are characterized for protection to the following limits: 15kv using the human body model 8kv contact discharge model 15kv air-gap discharge model iec 61000-4-2 the iec 61000-4-2 standard covers esd testing and performance of finished equipment. however, it does not specifically refer to integrated circuits. the xr33032/35/38 family helps you design equipment to meet iec 61000-4-2, without sacrificing board-space and cost for external esd-protection components. the major differences between tests done using the human body model and iec 61000-4-2 is a higher peak current in iec 61000-4-2. series resistance is lower in the iec 61000-4-2 model. hence, the esd withstand voltage measured to iec 61000-4-2 is generally lower than that of human body model. 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. 256 transceivers on the bus the standard rs-485 receiver input impedance is 12k ohms (1 unit load). a standard driver can drive up to 32 unit loads. the xr33032/35/38 transceivers have a 1/8 th unit load receiver input impedance of 96 k ? , allowing up to 256 transceivers to be connected in parallel on a communication line. any combination of these devices and other rs-485 transceivers up to a total of 32 unit loads may be connected to the line. low power shutdown mode low-power shutdown mode is initiated by bringing both re high and de low simultaneously. while in shutdown devices draw less than 1a of supply current. de and re may be tied together and driven by a single control signal. devices 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 leas t 600ns, the parts will enter shutdown. enable times t zh and t zl apply when the part is not in low-power shutdown state. enable times t zh(shdn) and t zl(shdn) apply when the parts are shutdown. the drivers and receivers take longer to become enabled from low-power shutdown t zh(shdn) and t zl(shdn) than from driver / receiver disable mode (t zh and t zl ).
xr33032/35/38 17 rev. 1.0.0 wide supply 18v tolerant rs-485/rs-422 transceivers function tables note: receiver inputs -200mv ? v a - v b ? -50mv are considered indeterminate. t able 1: half duplex 8 pin transmitting inputs outputs re de di a b x 1 1 1 0 x 1 0 0 1 0 0 x high-z 1 0 x shutdown t able 2: half duplex 8 pin receiving inputs output re de v a - v b ro 0 x ? -50mv 1 0 x ? -200mv 0 0 x open/shorted 1 1 1 x high-z 1 0 x shutdown
xr33032/35/38 18 wide supply 18v tolerant rs-485/rs-422 transceivers rev. 1.0.0 package drawings f igure 10. 8 nsoic
19 notice exar corporation reserves the right to make changes to the products contained in this publicat ion in order to improve design, performance or reliability. exar corpor ation assumes no responsib ility for the use of any circuits described herein, conveys no license under any pa tent or other right, and makes no representation that the circuits are free of patent infr ingement. charts and schedules contai ned here in are only for illustration purposes and may vary depending upon a user?s specific application. while the information in this publication has been carefully checked; no responsibility, however, is assumed for inaccuracies. exar corporation does not re commend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. products are not authorized for use in such applications unless exar corporation receives, in writing, assurances to its satisfaction that: (a) the risk of injury or damage has been minimized; (b) the user assumes all such risks; (c ) potential liability of exar corporation is adequately protected under the circumstances. copyright 2014 exar corporation datasheet february 2014. for technical support please email exar?s serial technical support group at: serialtechsupport@exar.com . reproduction, in part or whole, without the prior written consent of exar corporation is prohibited. xr33032/35/38 rev. 1.0.0 wide supply 18v tolerant rs-485/rs-422 transceivers revision history d ate r evision d escription february 2014 1.0.0 initial release [ecn 1411-03]

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