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1 sp335e rs-232/rs-485/rs-422 transceiver with internal termination august 2017 rev. 1.0.2 general description the sp335 is an advanced multiprotocol transceiver supporting rs-232, rs-485, and rs-422 serial standards. integrated cable termination and multiple configuration modes allow all three protocols to be used interchangeably over a single cable or connector with no additional switching components. full operation requires only four external charge pump capacitors. the rs-485/ rs-232 mode pin selects rs-485 mode when high, and rs-232 mode when low. in rs-485 mode, the term pin enables the differential 120 ? termination, and the half/ full pin configures the transceiver as either half or full duplex. the high speed drivers operate up to 20mbps in rs- 4 85/422 modes, and up to 1mbps in rs-232 mode. all drivers can be slew limited to 250kbps in any mode to minimize electroma gnetic interference (emi) by setting the dedicated slew pin low. all transmitter outputs and receiver inputs feature robust elec trostatic disch arge (esd) protection to ? 15kv iec 61000-4-2 airgap, 15kv human body mo del (hbm) and 8kv iec 61000-4-2 contact. each receiver output has full fail- safe protection to avoid system lockup, oscillation, or indeterminate states by defaulting to logic-high out put level when the inputs are open, shorted, or terminated but undriven. no external biasing resistors are required. the rs-232 receiver inputs include a 5k ? pull-down to ground when in rs-232 mode. the rs-485/422 receiver inputs are high impedance (>96k ? when termination is disabled), a llowing up to 256 devices on a single communicatio n bus (1/8th unit load). the sp335 operates from a single power supply, e ither 3.3v or 5v, with low idle current. the shutdown mode consumes less than 1a in low power standby operation with rs-232 receivers enabled. features ? pin-selectable cable termination ? no external resistors required for rs-485/422 termination or biasing ? robust esd protection: 15kv iec 61000-4-2 air gap discharge 8kv iec 61000-4-2 contact discharge 15kv human body model (hbm) ? 20mbps rs-485 and 1mbps rs-232 data rates ? pin-selectable 250kbps slew limiting ? single supply operation from 3v to 5.5v ? 1.65v to 5.5v logic interface v l pin ? 2 drivers, 2 receivers rs-232/v.28 ? 1 driver, 1 receiver rs-485/422 full or half duplex configuration 1/8th unit load, up to 256 receivers on bus ? rs-485/422 enhanced receiver fail-safe for open, shorted, or terminated but idle inputs ? 10na shutdown supply current (typical) ? small 32 qfn package (5mm x 5mm) typical applications ? software programmable serial ports ? (rs-232, rs-422, rs-485) ? industrial and single board computers ? industrial and proce ss control equipment ? point-of-sale equipment ? hvac controls and networking equipment ? building security and automation ordering information (1) p art n umber o perating t emperature r ange l ead -f ree p ackage p ackage m ethod sp335eer1-l -40c to +85c yes (2) 32-pin qfn tray sp335eer1-l/tr reel sp335ecr1-l 0c to +70c tray sp335ecr1-l/tr reel sp335eer1-0a-eb sp335e evaluation board n otes : 1. refer to www.exar.com/sp335e for most up-to-date ordering information 2. visit www.exar.com for additional information on environmental rating
absolute maximum ratings these are stress ratings only and functional operation of the d evice at these ratings or any other above those indicated in the operation secti ons to the specifications below is not implied. exposure to absolute maximum rating conditions for extended periods of time may affect relia bility and cause permanent damage to the device. supply voltage v cc -0.3v to 6.0v logic interface voltage v l v l ? v cc voltage at ttl input pins -0.3v to 6.0v receiver input voltage (from ground) 18v driver output voltage (from ground) 18v short circuit duratio n, tx out to ground continuous storage temperature range -65c to 150c lead temperature (soldering, 10s) 300c maximum operating junction temperature, t j 125c power dissipation 32-pin 5x5 qfn (derate 26.0mw/c above +70c) 1400mw sp335e 2 rs-232/rs-485/rs -422 transceiver with internal termination rev. 1.0.2 caution: esd (electrostatic discharge) sensitive device. permanent damag e may occur on unconnected devices subject to high energy electrostatic fields. unused devices mus t be stored in conductive foam or shunts. personnel should be properly grounded prior to handling this de vice. the protective foam should be discharged to the destination so cket before devic es are removed . esd protection m in . t yp . m ax . u nits tx output & rx input pins 15 kv iec 61000-4-2 airgap 8 kv iec 61000-4-2 contact 15 kv human body model (hbm) all other pins 3 kv human body model (hbm)
sp335e 3 rev. 1.0.2 rs-232/rs-485/rs-422 transceive r with internal termination electrical characteristics u nless otherwise noted : ? v cc = +3.0v to +5.5v, c1-c4 = 0.1f; t a = t min to t max . typical values are at v l = v cc = 3.3v, t a = +25c. s ymbol p arameters m in . t yp . m ax . u nits c onditions dc characteristics i cc supply current (rs-232) 1 2.5 ma no load, idle inputs, rs-485/ rs-232 = 0v i cc supply current (rs-485/422) 1.8 4.5 ma no load, idle inputs, rs-485/ rs-232 = v cc i cc vcc shutdown current 0.01 1 a shdn = 0v, receiver inputs open or grounded transmitter and logic input s (pins 10 - 1 5, 20 - 22) v il logic input voltage low v l 3 v v ih logic input voltage high 2v l 3 v i inl logic input leakage current 0.01 1 a i inpd logic input pulldown current 10 50 a re , term, & fd_tx_term v in = v l v hys logic input hysteresis 200 mv rs-232 and rs-485/422 receiv e r outputs (pins 6 & 7) v ol receiver output voltage low 0.4 v i out = 1.5ma v oh receiver output voltage high v l -0.6 v i out = -1.5ma i oss receiver output short circuit current 20 85 ma 0 ? v o ?? v l i oz receiver output leakage current 0.05 1 a 0 ?? v o ?? v l, receivers disabled
u nless otherwise noted : ? v cc = +3.0v to +5.5v, c1-c4 = 0.1f; t a = t min to t max . 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 rs-232 single-ended recei ver inputs (pins 18 & 19) v in input voltage range -15 +15 v v il input threshold low 0.6 1.2 v v cc = 3.3v 0.8 1.5 v v cc = 5.0v v ih input threshold high 1.5 2.0 v v cc = 3.3v 1.8 2.4 v v cc = 5.0v v hys input hysteresis 0.5 v r in input resistance 3 5 7 k ? -15v ? v in ? +15v rs-232 single-ended transmitt er outputs (pins 3 & 4) v out output voltage swing 5.0 5.5 v outputs loaded with 3k ? to gnd r off output power off impedance 300 10m ? v cc = 0v, v out = 2v i sc output short circuit current 30 60 ma v out = 0v i o output leakage current 125 a shdn = 0v, v out = 9v, v cc = 0v or 5.5v sp335e 4 rs-232/rs-485/rs -422 transceiver with internal termination rev. 1.0.2 electrical characteristics (continued)
sp335e 5 rev. 1.0.2 rs-232/rs-485/rs-422 transceive r with internal termination electrical characteristics (continued) u nless otherwise noted : ? v cc = +3.0v to +5.5v, c1-c4 = 0.1f; t a = t min to t max . 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 rs-485/422 differential receiver inputs (a,b) r in receiver input resistance 96 k ? termination disabled, -7v ? v cm ? +12v i in receiver input current 125 a v in = +12v -100 a v in = -7v v th receiver differential threshold voltage -200 -125 -50 mv -7v ? v cm ? +12v ? v th receiver input hysteresis 25 mv r term termination resistance 100 120 155 ? termination enabled, figure 4 -7v ? v cm ? +12v r term termination resistance 100 120 140 ? termination enabled, figure 4 v cm = 0v rs-485/422 differential driver outputs (y , z) v od differential driver output 1.5 v cc v r l = 54 ? (rs-485), figure 5 1.5 v cc v -7v ? v cm ? +12v, figure 6 2 v cc v r l = 100 ? (rs-422), figure 5 ? ? v od ? change in magnitude of differential output voltage 0.2 v r l = 54 ? or 100 ? , figure 5 v cm driver common mode output voltage 3 v r l = 54 ? or 100 ? , figure 5 ? ? v cm ? change in magnitude of common mode output voltage 0.2 v r l = 54 ? or 100 ? , figure 5 i osd driver output short circuit current 250 ma -7v ? v y or v z ?? +12v, figure 7 i o driver output leakage current 125 a de = 0v or shdn = 0v, v y or v z = -7v or +12v, v cc = 0v or 5.5v
sp335e 6 rs-232/rs-485/rs -422 transceiver with internal termination rev. 1.0.2 timing characteristics u nless otherwise noted : ? v cc = +3.0v to +5.5v, c1-c4 = 0.1f; t a = t min to t max . 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 all modes t enable enable from shutdown 1000 ns t shutdown enable to shutdown 1000 ns rs-232, data rate = 250kbps ( slew = 0v), one transmitter switching maximum data rate 250 kbps r l = 3k ? , c l = 1000pf t rhl , t rlh receiver propagation delay 100 ns c l = 150pf, figure 8 ? t rhl -t rlh ? receiver propagation delay skew 100 ns t dhl , t dlh driver propagation delay 1400 ns r l = 3k ? , c l = 2500pf, figure 9 ? t dhl -t dlh ? driver propagation delay skew 600 ns t shl, t slh transition region slew rate from 3.0v to -3.0v or -3.0v to 3.0v 6 30 v/s v cc = +3.3v, r l = 3k ? to 7k ? , c l = 150pf to 2500pf, t a = 25c, figure 9 t shl, t slh transition region slew rate from 3.0v to -3.0v or -3.0v to 3.0v 4 30 v/s v cc = +3.3v, r l = 3k ? to 7k ? , c l = 150pf to 2500pf, figure 9 rs-232, data rate = 1mbps ( slew = v cc ), one transmitter switching maximum data rate 1 mbps r l = 3k ? , c l = 250pf t rhl , t rlh receiver propagation delay 100 ns c l = 150pf, figure 8 ? t rhl -t rlh ? receiver propagation delay skew 100 ns t dhl , t dlh driver propagation delay 300 ns r l = 3k ? , c l = 1000pf, figure 9 ? t dhl -t dlh ? driver propagation delay skew 150 ns t shl, t slh transition region slew rate from 3.0v to -3.0v or -3.0v to 3.0v 13 150 v/s v cc = +3.3v, r l = 3k ? to 7k ? , c l = 150pf to 1000pf, figure 9 t shl, t slh transition region slew rate from 3.0v to -3.0v or -3.0v to 3.0v 24 150 v/s v cc = +3.3v, r l = 3k ? to 7k ? , c l = 150pf to 1000pf, t a = 25c, figure 9
sp335e 7 rev. 1.0.2 rs-232/rs-485/rs-422 transceive r with internal termination timing characteris tics (continued) u nless otherwise noted : ? v cc = +3.0v to +5.5v, c1-c4 = 0.1f; t a = t min to t max . 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 rs-485/rs-422, data rate = 250kbps ( slew = 0v), one transmitter switching maximum data rate 250 kbps r l = 54 ? , c l = 50pf t rphl , t rplh receiver propagation delay 50 150 ns c l = 15pf, figure 10 ? t rphl -t rplh ? receiver propagation delay skew 10 ns t dphl , t dplh driver propagation delay 500 1000 ns r l = 54 ? , c l = 50pf, figure 11 ? t dphl -t dplh ? driver propagation delay skew 100 ns t dr, t df driver rise and fall time 300 650 1200 ns t rzh , t rzl receiver output enable time 200 ns c l = 15pf, figure 12 t rhz , t rlz receiver output disable time 200 ns t dzh , t dzl driver output enable time 1000 ns r l = 500 ? , c l = 50pf, figure 13 t dhz , t dlz driver output disable time 200 ns rs-485/rs-422, dat a ra te = 20mbps ( slew = v cc ), one transmitter switching maximum data rate 20 mbps r l = 54 ? , c l = 50pf t rphl , t rplh receiver propagation delay 50 150 ns c l = 15pf, figure 10 ? t rphl -t rplh ? receiver propagation delay skew 10 ns t dphl , t dplh driver propagation delay 30 100 ns r l = 54 ? , c l = 50pf, figure 11 ? t dphl -t dplh ? driver propagation delay skew 10 ns t dr, t df driver rise and fall time 10 20 ns t rzh , t rzl receiver output enable time 200 ns c l = 15pf, figure 12 t rhz , t rlz receiver output disable time 200 ns t dzh , t dzl driver output enable time 200 ns r l = 500 ? , c l = 50pf, figure 13 t dhz , t dlz driver output disable time 200 ns
sp335e 8 rs-232/rs-485/rs -422 transceiver with internal termination rev. 1.0.2 pin descriptions pin name rs-232 rs-485 full duplex rs-485 half duplex 1 2 gnd ground 3 t1out, b/z transmitter 1 output z driver neg output b/z neg input/output 4 t2out, a/y transmitter 2 output y driver pos output a/y pos input/output 5 6 r1out receiver 1 output x x 7 r2out, ro receiver 2 output receiver ttl output receiver ttl output 8 9 10 shdn low power shutdown mode when low 11 slew data rate limited to 250kbps when low 12 fd_tx_term x 120? y -z termination enabled when both term and fd_tx_term are high x 13 term x 120 ? a-b termina tion enabled when high 14 rs-485/ rs-232 0 1 1 15 half/ full x 0 1 16 17 gnd ground 18 r2in, a receiver 2 input a pos receiver input x 19 r1in, b receiver 1 input b neg receiver input x 20 re x receiver enabled when low 21 t2in, de transmitter 2 input driver enabled when high 22 t1in, di transmitter 1 input driver ttl input 23 24 25 v- charge pump negative supply, 0.1f from ground 26 c2- charge pump cap 2 ne gative lead 27 c2+ charge pump cap 2 positive le ad, 0.1f 28 v+ charge pump positive supply, 0.1f to ground 29 c1+ charge pump cap 1 positive le ad, 0.1f 30 vl logic supply for ttl in put s and outputs, v l = +1.65v to +5.5v or tie to v cc 31 vcc main supply, v cc = +3.0v to +5.5v, bypass to ground with 1.0f 32 c1- charge pump cap 1 ne gative lead
sp335e 9 rev. 1.0.2 rs-232/rs-485/rs-422 transceive r with internal termination suggested db9 connector pinout db9 pin rs-232 rs-485 full duplex rs-485 half duplex 1 2 rxd rx+ 3 txd tx- data- 4 5 ground 6 7 rts tx+ data+ 8 cts rx- 9
sp335e 10 rs-232/rs-485/rs -422 transceiver with internal termination rev. 1.0.2 block diagrams f igure 1. rs-232 m ode t1out t2out r1out r2out c2 0.1f c3 0.1f cc 1.0f t2 r1 r2 t1 c4 0.1f c1 0.1f t1in t2in r1in r2in c1- v cc v l c1+ v+ c2+ c2- v- 32 pin qfn rs-232 sp335 gnd 1 2 3 4 5 6 7 8 24 23 22 21 20 19 18 17 32 31 30 29 28 27 26 25 9 10111213141516 _____ shdn _____ slew ______ rs-485/rs-232 ____ half/full gnd 5k 5k pins 12, 13, and 20 have 300k ? internal pull-downs (not shown).
f igure 2. rs-485 f ull d uplex m ode r d 120 120 z y ro c2 0.1f c3 0.1f cc 1.0f c4 0.1f c1 0.1f di de __ re b a c1- v cc v l c1+ v+ c2+ c2- v- 32 pin qfn rs-485 full duplex sp335 gnd _____ shdn _____ slew fd_tx_term term ______ rs-485/rs-232 ____ half/full 1 2 3 4 5 6 7 8 24 23 22 21 20 19 18 17 32 31 30 29 28 27 26 25 9 10111213141516 gnd pins 12, 13, and 20 have 300k ? internal pull-downs (not shown). termination control follows th e truth table on page 20. the full duplex driver terminat ion is enabled only when both te rm and fd_tx_term are high. sp335e 11 rev. 1.0.2 rs-232/rs-485/rs-422 transceive r with internal termination
f igure 3. rs-485 h alf d uplex m ode r d 120 b/z a/y ro c2 0.1f c3 0.1f cc 1.0f c4 0.1f c1 0.1f di de __ re c1- v cc v l c1+ v+ c2+ c2- v- 32 pin qfn rs-485 half duplex sp335 gnd _____ shdn _____ slew term ______ rs-485/rs-232 ____ half/full 1 2 3 4 5 6 7 8 24 23 22 21 20 19 18 17 32 31 30 29 28 27 26 25 9 10111213141516 gnd pins 12, 13, and 20 have 300k ? internal pull-downs (not shown). termination control follows th e truth table on page 20. sp335e 12 rs-232/rs-485/rs -422 transceiver with internal termination rev. 1.0.2
f igure 4. rs-485/422 r eceiver t ermination r esistance i b 2v rx i a b a r term r term =2(v a C v b ) i a C i b -7v v a ,v b +12v termination is enabled wh en both term and rs-485/ rs-232 are logic high. f igure 5. rs-485/422 d ifferential d river o utput v oltage d v od v cm de = v l di=0vorv l z y r l 2 r l 2 ) ,*85( 56' ,))(5(17,$/ ' 5,9(5 2 87387 9 2/7$*( 29(5 & 20021 0 2'( d v od v cm 60 375 375 z y de = v l di=0vorv l ) ,*85( 56' 5,9(5 2 87387 6 +257 & ,5&8,7 & 855(17 d -7v to +12v v z y i osd de = 0v or v l di=0vorv l sp335e 13 rev. 1.0.2 rs-232/rs-485/rs-422 transceive r with internal termination test circuits
f igure 8. rs-232 r eceiver p ropagation d elay c l rx v in v out +3v -3v v oh v ol t rhl t rlh v in v out 1.5v 1.5v v l 2 v l 2 ) ,*85( 56' 5,9(5 3 523$*$7,21 ' (/$< r l c l tx v in v out v l 0v +3v -3v t shl t slh v in v out t dhl 0v 0v t dlh v l 2 v l 2 63( 14 rs-232/rs-485/rs -422 transceiver with internal termination rev. 1.0.2
f igure 10. rs-485/422 r eceiver p ropagation d elay c l b a r re = 0v ro b a ro t rplh t rphl +1v 0v -1v v oh v ol v l 2 v l 2 ) ,*85( 56' 5,9(5 3 523$*$7,21 ' (/$< $1' 5 ,6( ) $// 7 ,0(6 d v od r l c l z y de = v l di v l 0v z y v od+ 0v v od- v od 90% 10% 90% 10% t dr t df t dplh t dphl di v od (v y -v z ) t skew =|t dphl C t dplh | v l 2 v l 2 sp335e 15 rev. 1.0.2 rs-232/rs-485/rs-422 transceive r with internal termination
f igure 12. rs-485/422 r eceiver o utput e nable /d isable t imes r l c l ro b a r re v l 0v v oh 0v v oh 2 v oh -0.25v t rzh t rhz re v a =v cc v b =0v ro v l 2 v l 2 c l ro b a r re r l v l v l 0v v l v ol v l +v ol 2 v ol +0.25v t rzl t rlz re v a =0v v b =v cc ro v l 2 v l 2 63( 16 rs-232/rs-485/rs -422 transceiver with internal termination rev. 1.0.2
f igure 13. rs-485/422 d river o utput e nable /d isable t imes r l c l d testingz:di=0v testingy:di=v l de z y v out v l 0v v oh v ol de v out v oh +v ol 2 v oh -0.25v t dzh t dhz v l 2 v l 2 r l c l d de v cc z y v out testingz:di=v l testingy:di=0v v l 0v v oh v ol t dzl t dlz de v out v oh +v ol 2 v ol +0.25v v l 2 v l 2 sp335e 17 rev. 1.0.2 rs-232/rs-485/rs-422 transceive r with internal termination
63( 18 product summary the sp335 is an advanced multiprotocol transceiver supporting r s-232, rs-485, and rs-422 serial standards. integrated cable termination and multiple configurat ion modes allow all three protocols to be used interchangeably over a single cable or connector with no additi onal switching components. full operation requires only four external charge pump capacitors. internally switched cable termination enabling and disabling the rs-485/422 termination resistor is o ne of the largest challe nges system designers face when sharing a single connector or pair of lines across mu ltiple serial protocols. a termination resistor may be necessary for accurate rs-485/422 communication, but mus t be removed when the lines are used for rs-232. sp335 provides an elegant solution to this problem by i ntegrating the termination resistor and switching control, and allowing it to be switched in and out of the circuit with a single p in. no external switching components are required. termination on the receiver inputs wil l be enabled if both term and rs-485/ rs-232 are high. enhanced failsafe the enhanced failsafe feature of the sp335 guarantees a logic-h igh receiver output when the receiver inputs are open, shorted, or terminated but idle/undriven. the enhance d failsafe interprets 0v differential as a logic high with a minimum 50mv noise margin, while maintaining compli ance with the eia/tia-485 standard of 200mv. no external biasing resistors are required, further eas ing the usage of multiple protocols over a single connector. 15kv esd protection esd protection structures are inc orporated on all pins to prote ct against electrostatic discharges encountered during handling and assembly. the bus pins (driver outputs and receiver inputs) have extra protection structures, which have been test ed up to 15kv without damage. these structures withstand high esd in all states: normal operation, in shutdown, and when powered off. esd protection is be tested in various ways. exar uses the foll owing methods to qualify the protection structures designed into sp335: 8kv using iec 61000-4-2 contact discharge 15kv using iec 6100 0-4-2 airgap discharge 15kv using the human body model (hbm) the iec 61000-4-2 standard is more rigorous than hbm, resulting in lower voltage levels compared with hbm for the same level of esd protection. because iec 61000-4-2 spe cifies a lower series resistance, the peak current is higher than hbm. the sp335 has passed both hbm and i ec 61000-4-2 testing without damage. variable logic level voltage the sp335 includes a v l pin, which reduces the logic lev el thresholds to interface with processors operating at reduced supply voltages. this pin should be connected to the su pply voltage of the processor, or can be connected to v cc for typical logic levels.
t able 1: rs-232 tx t ruth t able inputs outputs shdn rs-485/ rs-232 di/t1in, de/t2in z(b)/t1out, y(a)/t2out 0 x x 1/8th unit load 1 0 0 1 1 0 1 0 1 1 x rs-485 mode sp335e 19 rev. 1.0.2 rs-232/rs-485/rs-422 transceive r with internal termination truth tables t able 2: rs-232 rx t ruth t able inputs outputs shdn rs-485/ rs-232 b/r1in, a/r2in r1out, ro/r2out x 0 0 1 x 0 1 0 x 0 inputs open 1 x 1 x r1out high-z, ro/r2out in rs-485 mode
t able 3: rs-485/422 tx t ruth t able inputs outputs shdn rs-485/ rs-232 de/t2in di/t1in z(b)/t1out y(a)/t2out 0 x x x 1/8th unit load 1/8th unit load 1 1 0 x 1/8th unit load 1/8th unit load 1 1 1 0 1 0 1 1 1 1 0 1 x 0 x x rs-232 mode t able 4: rs-485/422 rx t ruth t able inputs output rs-485/ rs-232 shdn half/ full re (a-b) (y-z) ro/r2out 1 0 x x x x high-z 1 1 0 0 ? ? -50mv x 1 1 1 0 0 ? -200mv x 0 1 1 0 0 floating x 1 1 1 1 0 x ? ? -50mv 1 1 1 1 0 x ? -200mv 0 1 1 1 0 x floating 1 1 1 x 1 x x high-z 0 x x x x x rs-232 mode t able 5: rs-485/422 t ermination t ruth t able fd_tx_term term rs-485/ rs-232 half/ full tx term rx term p in 12 p in 13 p in 14 p in 15 p ins 3-4 p ins 18-19 x 0 1 0 - - 0 1 1 0 - on 1 1 1 0 on on x 0 1 1 - - x 1 1 1 on - x x 0 x - - sp335e 20 rs-232/rs-485/rs -422 transceiver with internal termination rev. 1.0.2 the de and re pins have no effect on the te rmination setting in any mode.
63( 21 pacage drawings f igure 14. qfn32 m echanical d imensions side view top view bottom view drawing no: pod-00000037 revision: b
63( 22 f igure 15. qfn32 r ecommended s tencil d esign and l and p attern drawing no: pod-00000037 revision: b
revision history d ate r evision d escription sept 2013 1.0.0 production release august 2017 1.0.1 update to maxlinear logo. update d fo rmat and ordering information table. updated package drawing to reflect 32 pins on package for bottom and si de view. august 2017 1.0.2 added maximum operating junc ti on temperature, page 2. 23 the content of this document is furnished for informational use only, is subject to change without notice, and should not be co nstrued as a commitment by maxlinear, inc.. maxlinear, inc. assumes no responsibility or liability for any errors or inac curacies that may appear in the informational content contain ed in this guide. complying with all applicable copyright laws is the responsibility of the user. without limiting the rights under copyright, no part of this document may be reproduced into , stored in, or introduced into a retrieval system, or transmitted in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise), or for any purpose, without the ex press written permission of maxlinear, inc. maxlinear, inc. does not recommend 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 maxlinear, inc. receives, in writing, assurances to its satisfaction that: (a) th e risk of injury or damage has been minimi zed; (b) the user a ssumes all such risks; (c) potential liability of maxlinear, inc. is adequately protected under the circumstances. maxlinear, inc. may have patents, patent applications, trademarks, copyrights, or other intellectual property rights covering s ubject matter in this document. except as expressly provided in any written license agreement from maxlinear, inc., the furnishing of this document does not give you any license to these patents, trademarks, copyrights, or other intellectual property. company and product names may be registered trademarks or trademarks of the respective owners with which they are associated. ? 2013-2017 maxlinear, inc. all rights reserved sp335e rs-232/rs-485/rs -422 transceiver with internal termination rev. 1.0.2 corporate headquarters: ? 5966 la place court ? suite 100 ? carlsbad, ca 92008 ? tel.:+1 (760) 692-0711 ? fax: +1 (760) 444-8598 www.maxlinear.com high performance analog: ? 48720 kato road fremont, ca 94538 tel.: +1 (510) 668-7000 fax: +1 (510) 668-7001 email: serialtechsupport@exar.com www.exar.com

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