unisonic technologies co., ltd u74ahct32 cmos ic www.unisonic.com.tw 1 of 4 copyright ? 2010 unisonic technologies co., ltd qw-r502-453.a quadruple 2-input positive-or gates ? description the u74ahct32 contains four independent 2-input or gates. each gate provides the function y=a+b in positive logic . ? features * inputs are ttl-voltage compatible * low power dissipation * balanced propagation delays sop-14 ? ordering information ? ordering information ordering number package packing u74ahct32 g-s14-r sop-14 tape reel
u74ahct32 cmos ic unisonic technologies co., ltd 2 of 4 www.unisonic.com.tw qw-r502-453.a ? pin configuration 1 2 3 4 5 6 7 14 13 12 11 10 9 8 1a 1b 1y 2a 2b 2y gnd v cc 4b 4a 4y 3b 3a 3y ? function table (each gate) inputs a inputs b output y l l l l h h h l h h h h note: h: high voltage level; l: low voltage level. ? logic symbol (positive logic) logic symbol iec logic symbol ? logic diagram y a b
u74ahct32 cmos ic unisonic technologies co., ltd 3 of 4 www.unisonic.com.tw qw-r502-453.a ? absolute maximum rating parameter symbol ratings unit supply voltage v cc -0.5 ~ +7 v input voltage v in -0.5 ~ +7 v output voltage v out -0.5 ~ v cc +0.5 v v cc or gnd current i cc 50 ma output current (v out = 0 ~ v cc ) i out 25 ma input clamping current (v in <-0.5v ) i ik -20 ma output clamping current (v out <0 or v out > v cc ) i ok 20 ma storage temperature t stg -65 ~ + 150 c note 1. the input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. absolute maximum ratings are those values beyond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device operation is not implied. ? thermal data parameter symbol ratings unit junction to ambient ja 76 c/w ? recommended operating conditions parameter symbol conditions min typ max unit supply voltage v cc 4.5 5.0 5.5 v input voltage v in 0 5.5 v output voltage v out 0 v cc v high-level input voltage v ih v cc =4.5v to 5.5v 2.0 v low-level input voltage v il v cc =4.5v to 5.5v 0.8 v high-level input current i oh -8 ma low-level input current i ol 8 ma input transition rise or fall rate t r / t f v cc =5.00.5v 20 ns/v ambient operating temperature t opr -40 +85 c ? static characteristics (t a =25c) parameter symbol test conditions min typ max unit i oh =-50 a v cc =4.5v 4.4 4.5 v high-level output voltage v oh i oh =-8ma v cc =4.5v 3.94 v i ol =50 a v cc =4.5v 0.1 v low-level output voltage v ol i ol =8ma v cc =4.5v 0.36 v input leakage current i i(leak) v in = v cc or gnd,v cc =0v to 5.5v 0.1 a quiescent supply current i q v in =v cc or gnd,i out =0,v cc =5.5v 2 a a dditional quiescent supply current per input pin i q one input at 3.4v, other inputs at v cc or gnd, i out =0, v cc = 5.5v 1.35 ma input capacitance c in v in = v cc or gnd, v cc = 5v 2 10 pf ? switching characteristics (t a =25c) parameter symbol test conditions min typ max unit c l =15 pf 5 6.9 propagation delay, from input(a and b) to output(y) t plh / t phl v cc =50.5 v c l =50 pf 5.5 7.9 ns power dissipation capacitance c pd f =10mhz, no load 11.5 pf
u74ahct32 cmos ic unisonic technologies co., ltd 4 of 4 www.unisonic.com.tw qw-r502-453.a ? test circuit and waveforms test circuit for measuring propagation delay from output c l waveforms showing the input(a and b) to output(y) propagation delays note: c l includes probe and jig capacitance. all input pulses are supplied by generators having the following characteristics: prr 1mhz, zo = 50 ? , t r 3ns, t f 3ns. 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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