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1/11 may 2002 n 300 m a supply current n 300kbps minimum guarenteed data rate n 6v/ m s minimum guaranteed slew rate n meet eia/tia-232 specifications down to 3v n available in dip-16, so-16, so-16 large and tssop16 description the ST3232 is a 3v powered eia/tia-232 and v.28/v.24 communication interface with low power requirements, high data-rate capabilities. ST3232 has a proprietary low dropout transmitter output stage providing true rs-232 performance from 3 to 5.5v supplies. the device requires only four small 0.1 m f standard external capacitors for operations from 3v supply. the ST3232 has two receivers and two drivers. the device is guaranteed to run at data rates of 250kbps while maintaining rs-232 output levels. typical applications are notebook, subnotebook and palmtop computers, battery powered equipment, hand-held equipment, peripherals and printers. ordering codes type temperature range package comments ST3232cn 0 to 70 c dip-16 25parts per tube / 40tube per box ST3232bn -40 to 85 c dip-16 25parts per tube / 40tube per box ST3232cd 0 to 70 c so-16 (tube) 50parts per tube / 20tube per box ST3232bd -40 to 85 c so-16 (tube) 50parts per tube / 20tube per box ST3232cdr 0 to 70 c so-16 (tape & reel) 2500 parts per reel ST3232bdr -40 to 85 c so-16 (tape & reel) 2500 parts per reel ST3232cw 0 to 70 c so-16 large (tube) 49parts per tube / 25tube per box ST3232bw -40 to 85 c so-16 large (tube) 49parts per tube / 25tube per box ST3232cwr 0 to 70 c so-16 large (tape & reel) 1000 parts per reel ST3232bwr -40 to 85 c so-16 large (tape & reel) 1000 parts per reel ST3232ctr 0 to 70 c tssop16 (tape & reel) 2500 parts per reel ST3232btr -40 to 85 c tssop16 (tape & reel) 2500 parts per reel ST3232 3 to 5.5v, low power, up to 400kbps, rs-232 drivers and receivers sop large dip sop tssop
ST3232 2/11 pin configuration pin description 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. v+ and v- can have a maximum magnitude of +7v, but their absolute addition can not exceed 13 v. pln n symbol name and function 1 c 1 + positive terminal for the first charge pump capacitor 2 v+ doubled voltage terminal 3 c 1 - negative terminal for the first charge pump capacitor 4 c 2 + positive terminal for the second charge pump capacitor 5 c 2 - negative terminal for the second charge pump capacitor 6 v- inverted voltage terminal 7 t2 out second transmitter output voltage 8 r2 in second receiver input voltage 9 r2 out second receiver output voltage 10 t2 in second transmitter input voltage 11 t1 in first transmitter input voltage 12 r1 out first receiver output voltage 13 r1 in first receiver input voltage 14 t1 out first transmitter output voltage 15 gnd ground 16 v cc supply voltage 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 t in transmitter input voltage range -0.3 to 6 v r in receiver input voltage range 25 v t out transmitter output voltage range 13.2 v r out receiver output voltage range -0.3 to (v cc + 0.3) v t short transmitter output short to gnd time continuous
ST3232 3/11 electrical characteristics (c 1 -c 4 = 0.1 m f, v cc = 3v to 5.5v, t a = -40 to 85 c, unless otherwise specified. typical values are referred to t a =25 c) logic input electrical characteristics (c 1 -c 4 = 0.1 m f, v cc = 3v to 5.5v, t a = -40 to 85 c, unless otherwise specified. typical values are referred to t a =25 c) note 1: transmitter input hysteresis is typically 250mv transmitter electrical characteristics (c 1 -c 4 = 0.1 m f tested at v cc = 3v to 5.5v, t a = -40 to 85 c, unless otherwise specified. typical values are referred to t a =25 c) receiver electrical characteristics (c 1 -c 4 = 0.1 m f tested at v cc = 3v to 5.5v, t a = -40 to 85 c, unless otherwise specified. typical values are referred to t a =25 c) symbol parameter test condit ions min. typ. max. unit i supply v cc power supply current no load v cc =3v 10% t a =25 c 0.3 1 ma no load v cc =5v 10% t a =25 c12ma symbol parameter test condit ions min. typ. max. unit v til input logic threshold low t-in (note 1) 0.8 v v tih input logic threshold high v cc = 3.3v v cc =5v 2 2.4 v v i il input leakage current t-in 0.01 1 m a symbol parameter test condit ions min. typ. max. unit v tout output voltage swing all transmitter outputs are loaded with 3k w to gnd 5 5.4 v r tout transmitter output resistance v cc =v+=v-=0v v out = 2v 300 10m w i tsc output short circuit current v cc =3vto5v v out = 12v 60 ma symbol parameter test conditio ns min. typ. max. unit v rin receiver input voltage operating range -25 25 v v ril rs-232 input threshold low t a =25 cv cc = 3.3v t a =25 cv cc =5v 0.6 0.8 1.2 1.5 v v v rih rs-232 input threshold high t a =25 cv cc = 3.3v t a =25 cv cc =5v 1.5 1.8 2.4 2.4 v v v rihys input hysteresis 0.3 v r rin input resistance t a =25 c357k w v rol ttl/cmos output voltage low i out = 1.6ma 0.4 v v roh ttl/cmos output voltage high i out = -1ma v cc -0.6 v cc -0.1 v
ST3232 4/11 timing characteristics (c 1 -c 4 = 0.1 m f, v cc = 3v to 5.5v, t a = -40 to 85 c, unless otherwise specified. typical values are referred to t a =25 c) transmitter skew is measured at the transmitter zero cross points application circuits capacitance value ( m f) symbol parameter test conditions min. typ. max. unit d r data transfer rate r l =3k w c l2 = 1000pf one trasmitter switching 300 400 kbps t phlr t plhr propagation delay input to output r xin =r xout c l = 150pf 0.2 m s |t phlt -t thl | transmitter propagation delay difference (note 1) 100 ns |t phlr -t thr | receiver propagation delay difference 50 ns s rt trnasition slew rate t a =25 cr l =3k w to 7k w v cc = 3.3v measured from +3v to -3v or -3v to +3v c l = 150pf to 1000pf c l = 150pf to 2500pf 6 4 30 30 v/ m s v/ m s v cc c1 c2 c3 c4 cbypass 3.0 to 3.6 0.1 0.1 0.1 0.1 0.1 4.5 to 5.5 0.047 0.33 0.33 0.33 0.33
ST3232 5/11 typical performance characteristics (unless otherwise specified t j =25 c) figure 1 : driver voltage transfer characteristics for trasmitter inputs figure 2 : driver voltage transfer characteristics for receiver inputs figure 3 : output current vs output low voltage figure 4 : output current vs output low voltage figure 5 : output current vs output high voltage figure 6 : output current vs output high voltage
ST3232 6/11 figure 7 : receiver input resistance
ST3232 7/11 dim. mm. inch min. typ max. min. typ. max. a1 0.51 0.020 b 0.77 1.65 0.030 0.065 b 0.5 0.020 b1 0.25 0.010 d 20 0.787 e 8.5 0.335 e 2.54 0.100 e3 17.78 0.700 f 7.1 0.280 i 5.1 0.201 l 3.3 0.130 z 1.27 0.050 plastic dip-16 (0.25) mechanical data p001c
ST3232 8/11 dim. mm. inch min. typ max. min. typ. max. a 1.75 0.068 a1 0.1 0.2 0.003 0.007 a2 1.65 0.064 b 0.35 0.46 0.013 0.018 b1 0.19 0.25 0.007 0.010 c 0.5 0.019 c1 45 (typ.) d 9.8 10 0.385 0.393 e 5.8 6.2 0.228 0.244 e 1.27 0.050 e3 8.89 0.350 f 3.8 4.0 0.149 0.157 g 4.6 5.3 0.181 0.208 l 0.5 1.27 0.019 0.050 m 0.62 0.024 s8 (max.) so-16 mechanical data po13h
ST3232 9/11 dim. mm. inch min. typ max. min. typ. max. a 2.65 0.104 a1 0.1 0.2 0.004 0.008 a2 2.45 0.096 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 10.1 10.5 0.397 0.413 e 10.0 10.65 0.393 0.419 e 1.27 0.050 e3 8.89 0.350 f 7.4 7.6 0.291 0.300 g l 0.5 1.27 0.020 0.050 m 0.75 0.029 s8 (max.) so-16l mechanical data po13i
ST3232 10/11 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 0.0089 d 4.9 5 5.1 0.193 0.197 0.201 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 tssop16 mechanical data c e b a2 a e1 d 1 pin 1 identification a1 l k e 0080338d
ST3232 11/11 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 from its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specifications 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 ? 2002 stmicroelectronics - printed in italy - all rights reserved stmicroelectronics group of companies australia - brazil - canada - china - finland - france - germany - hong kong - india - israel - italy - japan - malaysia - malta - morocco singapore - spain - sweden - switzerland - united kingdom - united states. ? http://www.st.com

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