1/10 june 2001 n supply voltage range: 4.5 to 5.5v n supply current no load (typ): 1.5ma n trasmitter output voltage swing (typ): 9v n transition slew rate (typ.): 12v/ m s n receiver propagation delay (typ.): 0.1 m s n receiver input voltage range: 30v n data rate (typ.): 400kbp/s n operating temperature range: -40 to 85 c, 0 to 70c description the st232a is a 2 driver, 2 receiver device following eia/tia-232 and v.28 communication standard. it is particularly suitable for applications where 12v is not available. the st232 uses a single 5v power supply and only four external capacitors (0.1 m f). typical application are in: portable computers, low power modems, interfaces translation, battery powered rs-232 networks. ordering codes ty pe temperature range package comments st232acn 0 to 70 c dip-16 25parts per tube / 40tube per box ST232ABn -40 to 85 c dip-16 25parts per tube / 40tube per box st232acd 0 to 70 c so-16 (tube) 49parts per tube / 25tube per box ST232ABd -40 to 85 c so-16 (tube) 49parts per tube / 25tube per box st232acdr 0 to 70 c so-16 (tape & reel) 2500 parts per reel ST232ABdr -40 to 85 c so-16 (tape & reel) 2500 parts per reel st232acw 0 to 70 c so-16 large (tube) 50parts per tube / 20tube per box ST232ABw -40 to 85 c so-16 large (tube) 50parts per tube / 20tube per box st232acwr 0 to 70 c so-16 large (tape & reel) 1000 parts per reel ST232ABwr -40 to 85 c so-16 large (tape & reel) 1000 parts per reel st232actr 0 to 70 c tssop16 (tape & reel) 2500 parts per reel ST232ABtr -40 to 85 c tssop16 (tape & reel) 2500 parts per reel st232a very high speed, ultra low power consumption 5v powered rs-232 drivers and receivers sop large dip sop tssop
st232a 2/10 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 conditi on is not implied. 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+ extra positive voltage (v cc -0.3) to 13.2 v v- extra negative voltage 0.3 to -13.2 v t in transmitter input voltage range -0.3 to (v cc + 0.3) v r in receiver input voltage range 30 v t out transmitter output voltage range 15 v r out receiver output voltage range -0.3 to (v cc + 0.3) v t sctout short circuit duration on t out infinite
st232a 3/10 electrical characteristics (c 1 - c 4 = 0.1 m f, v cc = 5v 10%, t a = -40 to 85c, unless otherwise specified. typical values are referred to t a = 25c) transmitter electrical characteristics (c 1 - c 4 = 0.1 m f, v cc = 5v 10%, t a = -40 to 85c, unless otherwise specified. typical values are referred to t a = 25c) note 1: measured from 3v to -3v or from -3v to 3v. note2: one trasmitter output is loaded with r l = 3k w to 7k w , c l = 50 to 1000pf receiver electrical characteristics (c 1 - c 4 = 0.1 m f, v cc = 5v 10%, t a = -40 to 85c, unless otherwise specified. typical values are referred to t a = 25c) note 1: rs-232 in to ttl-cmos out (from 50% to 50%) symbol parameter test conditions min. typ. max. unit i supply v cc power supply current no load 1.5 4 ma symbol parameter test conditions min. typ. max. unit v tout output voltage swing all transmitter outputs are loaded with 3k w to gnd 5 9v i til logic pull-up current t in = 0v 5 40 m a v til input logic threshold low 0.8 1.4 v v tih input logic threshold high 1.4 2 v sr t transition slew rate t a = 25c, v cc = 5v r l = 3 to 7k w ,c l = 50 to 2500pf (note1) 61230v/ m s d r data rate (note 2) 200 400 kbits/s r tout transmitter output resistance v cc = v+ = v- = 0v v out = 2v 300 w i sc transmitter output short circuit current one t xout to gnd 7 22 ma t dt propagation delay time ttl-cmos in to rs-232 out c l = 150pf (50% to 50%) 1.3 3.5 m s symbol parameter test conditions min. typ. max. unit v rin receiver input voltage operating range -30 30 v r rin rs-232 input resistance t a = 25c 3 5 7 k w v ril rs-232 input threshold low 0.8 1.3 v v rih rs-232 input threshold high 1.8 2.4 v v rihys rs-232 input hysteresis v cc = 5v 0.2 0.5 1 v v rol ttl/cmos output voltage low i out = 3.2ma (to v cc ) 0.2 0.4 v v roh ttl/cmos output voltage high i out = 1ma (to gnd) 3.5 v cc -0.2 v i scr receiver output short circuit current to gnd to v cc 2 10 10 30 ma ma t dr propagation delay time c l = 150pf (note 1) 0.1 0.5 m s
st232a 4/10 application circuits (note 1, note 2) note 1: c 1-4 capacitors can even be 1 m f ones. note 2: c 1-4 can be common or biased capacitors. capacitance value ( m f) c1 c2. c3 c4 c5 0.1 0.1 0.1 0.1 0.1
st232a 5/10 typical performance characteristics (unless otherwise specified t j = 25c) figure 1 : driver voltage transfer characteristics figure 2 : drive short circuit output current vs temperature figure 3 : receiver threshold vs supply voltage figure 4 : driver output capability current vs output voltage figure 5 : driver short circuit supply current vs temperature figure 6 : receiver threshold vs temperature
st232a 6/10 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
st232a 7/10 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
st232a 8/10 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
st232a 9/10 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 80 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
st232a 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 ? 2000 stmicroelectronics - printed in italy - all rights reserved stmicroelectronics group of companies australia - brazil - china - finland - france - germany - hong kong - india - italy - japan - malaysia - malta - morocco singapore - spain - sweden - switzerland - united kingdom ? http://www.st.com 10/10
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