unisonic technologies co., ltd 75232 linear integrated circuit www.unisonic.com.tw 1 of 10 copyright ? 2008 unisonic technologies co., ltd qw-r113-005,e multiple rs-232 drivers and receivers ? description the utc 75232 is a monolithic ic containing three independent drivers and five receivers which comply with the requirements of the tia/eia232-f standards . ? features * single chip with easy interconnection of the uart and serial-port connector of personal computer. * meets standard tia/eia-232-f and itu v.28 * up to 120 kbps data rate * 20-pin sop/ dip/ ssop/tssop packages lead-free: 75232l halogen-free: 75232g ? ordering information ordering number normal lead free halogen free package packing 75232-d20-t 75232l-d20-t 75232G-D20-T dip-20 tube 75232-p20-r 75232l-p20-r 75232g -p20-r tssop-20 tape reel 75232-p20-t 75232l-p20-t 752 32g-p20-t tssop-20 tube 75232-r20-r 75232l-r20-r 75232g-r20-r ssop-20 tape reel 75232-r20-t 75232l-r20-t 75232g-r20-t ssop-20 tube 75232-s20-r 75232l-s20-r 75232g -s20-r sop-20 tape reel 75232-s20-t 75232l-s20-t 75232g-s20-t sop-20 tube
75232 linear integrated circuit unisonic technologies co., ltd 2 of 10 www.unisonic.com.tw qw-r113-005,e ? pin configuration 2 1 20 19 18 17 16 15 14 13 12 11 5 6 7 8 9 10 4 3 v dd ra1 ra2 ra3 dy1 dy2 ra4 dy3 ra5 v ss v cc ry1 ry2 ry3 da1 da2 ry4 da3 ry5 gnd ? pin description pin no. pin name function 1 v dd supply voltage 2 ra1 first receiver input 3 ra2 second receiver input 4 ra3 third receiver input 5 dy1 first driver output 6 dy2 second driver output 7 ra4 fourth receiver input 8 dy3 third driver output 9 ra5 fifth receiver input 10 v ss supply voltage 11 gnd ground 12 ry5 fifth receiver output 13 da3 third driver input 14 ry4 fourth receiver output 15 da2 second driver input 16 da1 first driver input 17 ry3 third receiver output 18 ry2 second receiver output 19 ry1 first receiver output 20 v cc supply voltage
75232 linear integrated circuit unisonic technologies co., ltd 3 of 10 www.unisonic.com.tw qw-r113-005,e ? absolute maximum ratings parameter symbol ratings unit v dd 15 v v ss -15 v supply voltage (note 2) v cc 10 v driver -15 ~ 7 v input voltage range receiver v in -30 ~ 30 v driver output voltage range v out -15 ~ 15 v receiver low level output current i out 20 ma operation temperature t opr 0 ~ +70 c storage temperature t stg -40 ~ +150 c note: 1. absolute maximum ratings are those values be yond which the device could be permanently damaged. note: 1. absolute maximum ratings are stress ratings only and functional device operation is not implied. note: 2. all voltages are with respect to the network ground terminal. ? thermal data parameter symbol ratings unit dip-20 70 sop-20 100 ssop-20 115 junction-to-ambient tssop-20 ja 115 c/w ? recommended operating ratings parameter symbol min typ max unit v dd 7.5 9 15 v v ss -7.5 -9 -15 v supply voltage v cc 4.5 5 5.5 v high v ih 1.9 v level input voltage (driver only) low v il 0.8 v driver -6.0 high level output current receiver i oh -0.5 ma driver 6 low level output current receiver i ol 16 ma ? e lectrical characteristics (over recommended supply voltage and operating temp erature ranges, unless otherwise specified) parameter symbol test conditions min typ max unit supply currents v dd =9v, v ss =-9v 15 v dd =12, v ss =-12v 19 ma no load. all inputs at 1.9v v dd =15, v ss =-15v 25 v dd =9v, v ss =-9v 4.5 v dd =12, v ss =-12v 5.5 supply current from v dd i dd no load. all inputs at 0.8v v dd =15, v ss =-15v 9 ma v dd =9v, v ss =-9v -15 v dd =12, v ss =-12v -19 no load. all inputs at 1.9v v dd =15, v ss =-15v -25 ma v dd =9v, v ss =-9v -3.2 v dd =12, v ss =-12v -3.2 supply current from v ss i ss no load. all inputs at 0.8v v dd =15, v ss =-15v -3.2 ma supply current from v cc i cc no load. all inputs at 5v, v cc =5v 30 ma
75232 linear integrated circuit unisonic technologies co., ltd 4 of 10 www.unisonic.com.tw qw-r113-005,e ? electrical characteristics(cont.) parameter symbol test conditions min typ max unit driver section (v dd =9v, v ss =-9v, v cc =5v) high v oh v il =0.8v, r l =3 k 6 7.5 v output voltage level (figure. 1) low v ol v ih =1.9v, r l =3 k (note 1) -7.5 -6 v high i ih v in =5v 10 a input current level (figure. 2) low i il v in =0v -1.6 ma high i oh(sc) v il =0.8v, v out =0v (note 2) -8.5 -12 -19.5 ma short circuit output current (figure. 1) low i ol(sc) v ih =2.0v, v out =0v 8.5 12 19.5 ma output resistance (note 3) r out v dd =v ss =v cc =0v, v out =-2v~2v 300 receiver section (v dd =9v, v ss =-9v, v cc =5v) ta=25 c (figure. 5) 1.75 1.9 2.3 positive v t+ ta=0 c ~ 70 c (figure. 5) 1.55 2.3 v going threshold voltage negative v t- 0.75 0.97 1.25 v input hysteresis(v t+ - v t- ) v hys 0.5 v v ih =0.75v 2.6 4 5 high v oh i oh =-0.5ma inputs open 2.6 v output voltage level low v ol v in =3v, i ol =10ma 0.2 0.45 v v in =25v 3.6 8.3 high i ih v in =3v 0.43 ma v in =-25v -3.6 -8.3 input current level (figure. 5) low i il v in =-3v -0.43 ma short-circuit output current i o(sc) (fig. 4) -3.4 -12 ma note. 1. for voltage logic levels, the more positive (less negative) limit is desi gnated as maximum, (e.g. if -10v is a maximum, the typical value is a more negative voltage). 2: output short circuit conditions must maintain t he total power dissipation below absolute maximum ratings and the sign is used to indicate direction. 3: test conditions are those specifie d by tia/eia232-f and as listed above. ? switching characteristics (ta=25 c) parameter symbol test conditions min typ max unit driver section (v dd =12v, v ss =-12v, v cc =5v) t plh 315 500 ns propagation delay time t phl r l =3 ~ 7 k , c l =15pf (figure. 3) 75 175 ns t tlh 60 100 ns t thl r l =3 ~ 7 k , c l =15pf 40 75 ns t tlh 1.7 2.5 s transition time t thl r l =3 ~ 7 k , c l =2500pf (figure. 3, note) 1.5 2.5 s receiver section (v dd =12v, v ss =-12v, v cc =5v) t plh 107 250 ns t phl r l =5 k , c l =50pf 42 150 ns t plh 100 160 ns propagation delay time (figure. 6) t phl r l =1.5 k , c l =15pf 60 100 ns t tlh 175 350 ns t thl r l =5 k , c l =50pf 16 60 ns t tlh 90 175 ns transition time (figure. 6) t thl r l =1.5 k , c l =15pf 15 50 ns note: measured points of the output waveform (tia/eia- 232-f conditions) as below, all unused inputs are tied. - low to high level: between -3v and 3v. - high to low level: between 3v and -3v.
75232 linear integrated circuit unisonic technologies co., ltd 5 of 10 www.unisonic.com.tw qw-r113-005,e ? parameter measurement information driver test circuits: i ih -i il v dd v cc v in v ss v in figure. 1 for v oh , v ol , i oh(sc) , i ol(sc) figure. 2 for i ih , i il driver voltage waveforms: figure. 3 note: 1. the pulse generator characteristics: t w =25 s, prr=20khz, z o =50 , t r =t f <50ns. 2. c l includes probe and jig capacitance.
75232 linear integrated circuit unisonic technologies co., ltd 6 of 10 www.unisonic.com.tw qw-r113-005,e ? parameter measurement information (cont.) receiver test circuits: v dd v cc v ss v in figure. 4. i o(sc) figure. 5 v t, v oh, v ol receiver propagation and transition times: figure. 6. note: 1. the pulse generator characteristics: t w =25 s, prr=20khz, z o =50 , t r =t f <50ns. 2. c l includes probe and jig capacitance.
75232 linear integrated circuit unisonic technologies co., ltd 7 of 10 www.unisonic.com.tw qw-r113-005,e ? application information power-supply protection to meet power- off fault conditions of tia/eia-232-f diodes placed in series with the v dd and v ss leads protect the device in the fault condition in which the device outputs are shorted to 15v and the power supplies are at low and provide low-impedance paths to ground. utc 75232 utc 75232 v dd v ss v dd v ss output 15v typical connection ?*?: refer figure 10 to select the correct values for the loading capacitors (c1, c2, and c3), which are required to meet the rs-232 maximum slew-rate requirement of 30v/ s. the value of the loading capacitors required depends upon the line length and desired slew rate, but typically is 330 pf.
75232 linear integrated circuit unisonic technologies co., ltd 8 of 10 www.unisonic.com.tw qw-r113-005,e ? logic symbol and logic diagram ry1 ra1 ry2 ra2 ry3 ra3 da1 dy1 da2 dy2 ry4 ra4 da3 dy3 ry5 ra5 circuit of drivers (resistor value shown are nominal.) to other drivers input dax v dd gnd 11.6k 9.4k 75.8 4.2k to other drivers 10.4k 3.3k 68.5 v ss to other drivers 320 dyx output circuit of each receiver (resistor value shown are nominal.)
75232 linear integrated circuit unisonic technologies co., ltd 9 of 10 www.unisonic.com.tw qw-r113-005,e ? typical characteristics(driver) output voltage, v out (v) output current, i out (ma) figure 7 figure 8 short-circuit output current vs free- air temperature free-air temperature, t a ( ) short-circuit output current, i os (ma) 12 3 -6 9 -12 slow rate vs load capacitance load capacitance, c l (pf) 1000 100 1000 10000 1 20 30 40 50 60 70 0 100 -3 10 sr- slow (v/ s) 0 10 6 -9 10 i ol(sc) (v in= 1.9v) i oh(sc) (v in= 0.8v) v dd = 9v v ss = -9v v o = 0 v oh (v in =0.8v) v dd = 9v v ss = -9v r l = 3k t a = 25 figure 9 figure 10
75232 linear integrated circuit unisonic technologies co., ltd 10 of 10 www.unisonic.com.tw qw-r113-005,e ? typical characteristics(receiver) input threshold voltage vs free- air temperature free-air temperature, t a ( ) 2.4 1.6 0.8 2.2 0.4 20 30 40 50 60 70 0 1.2 1.4 10 2 0.6 v t - v dd = 9v v ss = -9v v o = 0 1.8 v t + input threshold voltage vs supply voltage supply voltage, v cc (v) 2 1.2 0.4 1.8 0 4678910 2 0.8 1 3 1.6 0.2 v t - 1.4 v t + 0.6 1 5 figure 11 figure 12 amplitude (v) supply voltage, v cc (v) figure 13 utc assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all utc products described or contained herein. utc products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
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