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1/19 january 2004 esd protection for rs-232 i/o pins: 8kv iec 1000-4-2 contact discharge 15kv human body model 1 a supply current achieved when in auto-powerdown 250kbps minimum guaranteed data rate guaranteed 6v/ sslewraterange guaranteed mouse driveability 0.1 f external capacitors meet eia/tia-562 specifications available in so-28, ssop-28, tssop28 and flip-chip28 packages description the stlv3243e device consists of 3 drivers, 5 receivers and a dual charge-pump circuit. all transmitter outputs and receiver inputs are protected up to 8kv using iec 1000-4-2 contact discharge and 15kv using the human body model. the receiver r2 is always active to implement a wake-up feature for serial port. the device is guaranteed to run at data rates of 250kbps while maintaining rs-562 output levels. the auto-powerdown feature operates when forceon is low and forceoff is high. during this operation mode, if the device does not sense a valid rs-562 signal, the driver outputs are disabled. if forceoff is set low, both drivers and receivers (expert r2b) are shut off, and supply current is reduced to 1 a. disconnecting the serial port or turning off the peripheral drives causes the auto-powerdown condition to occur. auto-powerdown can be disabled when forceon and forceoff are high, and this should be done when driving a serial mouse. with auto-powerdown enabled, the device is automatically activated when a valid signal is applied to any receiver input. typical applications are notebooks, pdas, smart-phones, hand-held equipment, palmtop computers, peripherals, battery-powered equipment, and printers. ordering codes ty pe temperature range package comments stlv3243ecd 0 to 70 c so-28 (tube) 27parts per tube / 12tube per box stlv3243ebd -40 to 85 c so-28 (tube) 27parts per tube / 12tube per box stlv3243cdr 0 to 70 c so-28 (tape & reel) 1000 parts per reel stlv3243ebdr -40 to 85 c so-28 (tape & reel) 1000 parts per reel stlv3243ecpr 0 to 70 c ssop-28 (tape & reel) 1350 parts per reel stlv3243ebpr -40 to 85 c ssop-28 (tape & reel) 1350 parts per reel stlv3243ectr 0 to 70 c tssop28 (tape & reel) 2500 parts per reel stlv3243ebtr -40 to 85 c tssop28 (tape & reel) 2500 parts per reel stlv3243ecjr 0 to 70 c flip-chip28 coming soon STLV3243EBJR -40 to 85 c flip-chip28 coming soon stlv3243e 15kv esd protected 2.3 to 5.5v, 400kbps, rs-232 transceiver with auto-powerdown ssop sop tssop flip-chip28
stlv3243e 2/19 pin description pln n symbol name and function 1c 2 + positive terminal of inverting charge pump capacitor 2c 2 - negative terminal of inverting charge pump capacitor 3 v- -5.5v generated by the charge pump 4r1 in first receiver input voltage 5r2 in second receiver input voltage 6r3 in third receiver input voltage 7r4 in fourth receiver input voltage 8r5 in fifth receiver input voltage 9t1 out first transmitter output voltage 10 t2 out second transmitter output voltage 11 t3 out third transmitter output voltage 12 t3 in third transmitter input voltage 13 t2 in second transmitter input voltage 14 t1 in first transmitter input voltage 15 r5 out fifth receiver output voltage 16 r4 out fourth receiver output voltage 17 r3 out third receiver output voltage 18 r2 out second receiver output voltage 19 r1 out first receiver output voltage 20 r2 outb non-inverting complementary receiver output, always active for wake-up 21 invalid output of the valid signal detector. indicates if a valid rs-232 level is present on receiver inputs logic "1" 22 forceoff drive low to shut down transmitters and on-board power supply. this over-rides all automatic circuitry and forceon 23 forceon drive high to override automatic circuitry keeping transmitters on (forceoff must be high) 24 c 1 - negative terminal of voltage- charge pump capacitor 25 gnd ground 26 v cc supply voltage 27 v+ 5.5v generated by the charge pump 28 c 1 + positive terminal of voltage- charge pump capacitor
stlv3243e 3/19 pin description pln n symbol name and function a1 r2 in second receiver input voltage a2 r3 in third receiver input voltage a3 r4 in fourth receiver input voltage a4 r5 in fifth receiver input voltage a5 t1 out first transmitter output voltage a6 t2 out second transmitter output voltage b1 v- -5.5v generated by the charge pump b2 r1 in first receiver input voltage b3 t3 out third transmitter output voltage b4 t3 in third transmitter input voltage b5 t1 in first transmitter input voltage b6 t2 in second transmitter input voltage c1 c 2 + positive terminal of inverting charge pump capacitor c2 c 2 - negative terminal of inverting charge pump capacitor c5 r4 out fourth receiver output voltage c6 r5 out fifth receiver output voltage d1 c 1 + positive terminal of voltage- charge pump capacitor d2 v+ 5.5v generated by the charge pump d3 v cc supply voltage d4 forceon drive high to override automatic circuitry keeping transmitters on (forceoff must be high) d5 r1 out first receiver output voltage d6 r3 out third receiver output voltage e1 gnd ground e2 c 1 - negative terminal of voltage- charge pump capacitor e3 forceoff drive low to shut down transmitters and on-board power supply. this over-rides all automatic circuitry and forceon e4 invalid output of the valid signal detector. indicates if a valid rs-232 level is present on receiver inputs logic "1" e5 r2 outb non-inverting complementary receiver output, always active for wake-up e6 r2 out second receiver output voltage
stlv3243e 4/19 pin configuration invalid truth table output control truth table rs-232 signal present at any receiver input invalid output yes h no l force on force off valid receiver level operation status t out r out r 2outb x 0 x shutdown (force off) high z high z active 11 x normal operating (force on) active active active 01 yes normal operating (auto-powerdown) active active active 01 no shutdown (auto-power- down) high z active active sop, ssop, tssop (top view) flip-chip 6x5 (bottom view, bumps side)
stlv3243e 5/19 absolute maximum ratings absolute maximum ratings are those values beyond which damage to the device may occur. functional operation under these condition is not implied. esd performance: transmitter outputs, receiver inputs electrical characteristics (c 1 -c 4 =0.1 f, v cc =2.3vto5.5v,t a = -40 to 85c, unless otherwise specified. typical values are referred to t a =25c) logic input electrical characteristics (c 1 -c 4 =0.1 f, v cc =2.3vto5.5v,t a = -40 to 85c, unless otherwise specified. typical values are referred to t a =25c) symbol parameter value unit v cc supply voltage -0.3 to 6 v v+ doubled voltage terminal (v cc -0.3) to 7 v v- inverted voltage terminal 0.3 to -7 v v+ +|v-| 13 v forceon, forceoff, t in input voltage -0.3 to 6 v r in receiver input voltage range 25 v t out transmitter output voltage range 13.2 v r out r outb invalid receiver output voltage range -0.3 to (v cc +0.3) v t short short circuit duration on t out (one at a time) continuous t stg storage temperature range -65 to 150 c symbol parameter test conditions min. typ. max. unit esd esd protection voltage human body model 15 kv esd esd protection voltage iec 1000-4-2 (contact discharge) 8kv symbol parameter test conditions min. typ. max. unit i ashdn supply current auto-powerdown forceoff = gndforceon =v cc all r_in open or grounded 110 a i supply supply current forceon = forceoff =v cc 0.3 1 ma i shdn shutdown supply current forceoff =gnd 1 10 a symbol parameter test conditions min. typ. max. unit v til input logic threshold low t-in, forceon, forceoff, v cc =3.0v v cc =2.3v 0.8 0.5 v v v tih input logic threshold high t-in, forceon, forceoff v cc =3.0v v cc =2.3v 2 1.4 v v v thys transmitter input hysteresis 0.4 v i il input leakage current t-in, forceon, forceoff 0.01 1.0 a
stlv3243e 6/19 receiver outputs electrical characteristics (c 1 -c 4 =0.1 f, v cc =2.3vto5.5v,t a = -40 to 85c, unless otherwise specified. typical values are referred to t a = 25c) auto-powerdown electrical characteristics (c 1 -c 4 =0.1 f, v cc =2.3vto5.5v,t a = -40 to 85c, unless otherwise specified. typical values are referred to t a = 25c, forceon = gnd, forceoff =v cc ) transmitter electrical characteristics (c 1 -c 4 =0.1 f, v cc =2.3vto5.5v,t a = -40 to 85c, unless otherwise specified. typical values are referred to t a = 25c) symbol parameter test conditions min. typ. max. unit i ol output leakage current receiver disabled 0.05 10 a v ol output voltage low i out =1.6ma 0.4 v v oh output voltage high i out =-1ma v cc -0.6 v cc -0.1 v symbol parameter test conditions min. typ. max. unit v rite receiver input threshold to invalid output voltage high (fig. 1) positive threshold 2.7 v negative threshold 2.7 v v ritd receiver input threshold to invalid output voltage low (fig. 1) -0.3 0.3 v v iol invalid output voltage low i out =1.6ma 0.4 v v ioh invalid output voltage high i out =-1ma v cc -0.6 v t wu receiver or transmitter edge transmitter enabled (fig. 1) 100 s t invh receiver positive or negative threshold to invalid high (fig. 1) 0.2 s t invl receiver positive or negative threshold to invalid low (fig. 1) 30 s symbol parameter test conditions min. typ. max. unit v tout output voltage swing all transmitter outputs are loaded with 3k ? to gnd v cc =3.0v v cc =2.3v 3.7 4.4 3.9 v r out output resistance v cc =v+=v-=0v v out = 2v 300 10m ? i sc output short circuit current v cc =3.3v 40 60 ma i l output leakage current v cc = 0 to 5.5v, transmitter output =12v, transmitter disabled 25 ma v ot transmitter output voltage t1in = t2in = gnd, t3in = v cc t3out loaded with 3k ? to gnd t1out and t2out loaded with 2.5ma each 3.7 v
stlv3243e 7/19 receiver inputs electrical characteristics (c 1 -c 4 =0.1 f, v cc =2.3vto5.5v,t a = -40 to 85c, unless otherwise specified. typical values are referred to t a =25c) timing characteristics (c 1 -c 4 =0.1 f, v cc =2.3to3v,t a = -40 to 85c, unless otherwise specified. typical values are referred to t a =25c) symbol parameter test conditions min. typ. max. unit v rin receiver input voltage operating range -25 25 v v ril rs-232 input threshold low t a = 25c v cc =3.0v t a = 25c v cc =2.3v 0.6 0.4 1.0 0.8 v v rih rs-232 input threshold high t a = 25c v cc =3.0v t a = 25c v cc =2.3v 1.4 1.2 2.4 2.0 v v rihys input hysteresis 0.5 v r rin input resistance t a = 25c 3 5 7 k ? symbol parameter test conditions min. typ. max. unit d r maximum data rate r l =3k ? c l = 1000pf one transmitter switching 250 kbps t phl t plh receiver propagation delay r in to r out c l = 150pf 0.15 s t t_skew transmitter skew 60 ns t r_skew receiver skew 120 ns s rt transition slew rate t a = 25c r l =3kto7k ? v cc =3v measured from +3v to -3v or -3v to +3v c l = 150pf to 1000pf 430v/ s
stlv3243e 8/19 application circuits required minimum capacitance value ( f) v cc (v) c 1 c 2, c 3, c 4, c bypass 2.3 to 3.0 0.1 0.1
stlv3243e 9/19 autopowerdown input levels autopowerdown input timing
stlv3243e 10/19 figure 1 : data rate figure 2 : receiver shutdown and powerup v cc =2.3v, i o =100ma, c i =1 f(tantalum), c o =10 f(tantalum) v i =12 v, i o =from 0.1a to 7.5a, c i =10 f(tantalum), c o =10 f(tan- talum)
stlv3243e 11/19 dim. mm. inch min. typ max. min. typ. max. a 2.65 0.104 a1 0.1 0.3 0.004 0.012 b 0.35 0.49 0.014 0.019 b1 0.23 0.32 0.009 0.012 c 0.5 0.020 c1 45? (typ.) d 17.70 18.10 0.697 0.713 e 10.00 10.65 0.393 0.419 e 1.27 0.050 e3 16.51 0.650 f 7.40 7.60 0.291 0.300 l 0.50 1.27 0.020 0.050 s? (max.) so-28 mechanical data 0016023 8
stlv3243e 12/19 dim. mm. inch min. typ max. min. typ. max. a 2 0.079 a1 0.050 0.002 a2 1.65 1.75 1.85 0.065 0.069 0.073 b 0.22 0.38 0.009 0.015 c 0.09 0.25 0.004 0.010 d 9.9 10.2 10.5 0.390 0.402 0.413 e 7.4 7.8 8.2 0.291 0.307 0.323 e1 5 5.3 5.6 0.197 0.209 0.220 e 0.65 bsc 0.0256 bsc k0 ? 10 ? 0 ? 10 ? l 0.55 0.75 0.95 0.022 0.030 0.037 ssop28 mechanical data
stlv3243e 13/19 dim. mm. inch min. typ max. min. typ. max. a 1.2 0.047 a1 0.05 0.15 0.002 0.004 0.006 a2 0.8 1 1.05 0.031 0.039 0.041 b 0.19 0.30 0.007 0.012 c 0.09 0.20 0.004 0.0079 d 9.6 9.7 9.8 0.378 0.382 0.386 e 6.2 6.4 6.6 0.244 0.252 0.260 e1 4.3 4.4 4.48 0.169 0.173 0.176 e 0.65 bsc 0.0256 bsc k0 ? 8 ? 0 ? 8 ? l 0.45 0.60 0.75 0.018 0.024 0.030 tssop28 mechanical data 0128292b
stlv3243e 14/19 dim. mm. mils min. typ max. min. typ. max. a 0.58 0.95 22.8 37.4 a1 0.24 9.4 a2 0.65 25.6 b 0.25 0.30 0.35 9.8 11.8 13.8 d 3.97 4.17 156.3 164.2 d1 2.5 98.4 e 2.47 2.67 97.2 105.1 e1 2 78.7 e 0.45 0.55 17.7 21.7 f 0.23 0.34 9.1 13.4 f1 0.80 0.91 31.5 31.8 flip-chip28 mechanical data 7385199/a
stlv3243e 15/19 dim. mm. inch min. typ max. min. typ. max. a 330 12.992 c 12.8 13.2 0.504 0.519 d 20.2 0.795 n 60 2.362 t 30.4 1.197 ao 10.8 11.0 0.425 0.433 bo 18.2 18.4 0.716 0.724 ko 2.9 3.1 0.114 0.122 po 3.9 4.1 0.153 0.161 p 11.9 12.1 0.468 0.476 tape & reel so-28 mechanical data
stlv3243e 16/19 dim. mm. inch min. typ max. min. typ. max. a 330 12.992 c 12.8 13.2 0.504 0.519 d 20.2 0.795 n 60 2.362 t 22.4 0.882 ao 8.4 8.6 0.331 0.339 bo 10.7 10.9 0.421 0.429 ko 2.9 3.1 0.114 0.122 po 3.9 4.1 0.153 0.161 p 11.9 12.1 0.468 0.476 tape & reel ssop28 mechanical data
stlv3243e 17/19 dim. mm. inch min. typ max. min. typ. max. a 330 12.992 c 12.8 13.2 0.504 0.519 d 20.2 0.795 n 60 2.362 t 22.4 0.882 ao 6.8 7 0.268 0.276 bo 10.1 10.3 0.398 0.406 ko 1.7 1.9 0.067 0.075 po 3.9 4.1 0.153 0.161 p 11.9 12.1 0.468 0.476 tape & reel tssop28 mechanical data
stlv3243e 18/19 dim. mm. inch min. typ max. min. typ. max. a 330 12.992 c 12.8 13.2 0.504 0.519 d 20.2 0.795 n 60 2.362 t 18.4 0.882 ao 2.6 2.8 0.102 0.110 bo 4.1 4.3 0.161 0.169 ko 1.1 1.3 0.043 0.051 po 3.9 4.1 0.153 0.161 p 3.9 4.1 0.153 0.161 tape & reel flip-chip28 mechanical data
stlv3243e 19/19 information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result f rom its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specificati ons mentioned in this publication are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of stmicroelectronics. the st logo is a registered trademark of stmicroelectronics all other names are the property of their respective owners ? 2004 stmicroelectronics - all rights reserved stmicroelectronics group of companies australia - belgium - brazil - canada - china - czech republic - finland - france - germany - hong kong - india - israel - ital y - japan - malaysia - malta - morocco - singapore - spain - sweden - switzerland - united kingdom - united states. http://www.st.com

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