unisonic technologies co., ltd u74hc373 cmos ic www.unisonic.com.tw 1 of 5 copyright ? 2015 unisonic technologies co., ltd qw-r502-296.c octal d-type transparent latch ? description the u74hc373 consists of eight d- type transparent latches with 3-state outputs. when letch- enable (le) is high, the latches operate at the transparent mode, and the latches? output will change corresponding with the data present at d0 to d7. when output-enable (oe) is low, the contents of the latches will be present at the outputs. the out puts will be in the high impedance when oe goes high. ? features * operation voltage range: 2~6v * drive up to 15 lsttl loads * 3-state outputs * output capability suitable for bus driving sop-20 ssop-20 tssop-20 dip-20 ? ordering information ordering number package packing lead free halogen free u74hc373l-d20-t U74HC373G-D20-T dip-20 tube - u74hc373g-s20-r sop-20 tape reel u74hc373g-r20-r ssop-20 tape reel - u74hc373g-p20-r tssop-20 tape reel ? marking dip-20 sop-20 / ssop-20 / tssop-20
u74hc373 cmos ic unisonic technologies co., ltd 2 of 5 www.unisonic.com.tw qw-r502-296.c ? pin configuration ? function table inputs( oe ) inputs(le) inputs(d) output(q) l h h h l h l l l l x q 0 h x x z note: h: high voltage level; l: low voltage level. ? logic symbol ? logic diagram
u74hc373 cmos ic unisonic technologies co., ltd 3 of 5 www.unisonic.com.tw qw-r502-296.c ? absolute maximum rating (t a =25 , unless otherwise specified) parameter symbol ratings unit supply voltage v cc -0.5 ~ 7 v v cc or gnd current i cc 70 ma output current i out 35 ma input clamp current i ik 20 ma output clamp current i ok 20 ma operating temperature t opr -40 ~ + 85 c storage temperature t stg -65 ~ + 150 c note: absolute maximum ratings are those values be yond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device oper ation is not implied. ? thermal data parameter symbol ratings unit junction to ambient dip-20 ja 52 c/w sop-20 80 ssop-20 96 tssop-20 103 ? recommended operating conditions (t a =25 , unless otherwise specified) parameter symbol test conditions min typ max unit supply voltage v cc 2 5 6 v high-level input voltage v ih v cc =2.0v 1.5 v v cc =4.5v 3.15 v cc =6.0v 4.2 low-level input voltage v il v cc =2.0v 0 0.5 v v cc =4.5v 0 1.35 v cc =6.0v 0 1.8 input voltage v in 0 v cc v output voltage v out high or low state 0 v cc v input rise or fall times t r , t f v cc =2.0v 1 s v cc =4.5v 0.5 v cc =6.0v 0.4 ? electrical characteristics (t a =25 , unless otherwise specified) parameter symbol test conditions min typ max unit output voltage high-level v oh v cc =2.0v i oh =-20 a, v in =v ih or v il 1.9 1.998 v v cc =4.5v 4.4 4.499 v cc =6.0v 5.9 5.999 v cc =4.5v, i oh =-6ma, v in =v ih or v il 3.98 4.3 v cc =6.0v, i oh =-7.8ma, v in =v ih or v il 5.48 5.8 output voltage low-level v ol v cc =2.0v i oh =-20 a, v in =v ih or v il 2 100 mv v cc =4.5v 1 100 v cc =6.0v 1 100 v cc =4.5v, i ol =6ma, v in =v ih or v il 170 260 v cc =6.0v, i ol =7.8ma, v in =v ih or v il 150 260 input leakage current i i ( leak ) v cc =6.0v, v in =v cc or 0 0.1 100 na disable output leakage current i oz v cc =6.0v, v out =v cc or 0 0.01 0.5 a quiescent supply current i q v cc =6.0v, v in =v cc or 0, i out =0 8 a input capacitance c in v cc =2.0v~6.0v 3 10 pf
u74hc373 cmos ic unisonic technologies co., ltd 4 of 5 www.unisonic.com.tw qw-r502-296.c ? switching characteristics (see test circuit and waveforms) parameter symbol test conditions min typ max unit propagation delay from input (d) to output (q) t plh /t phl v cc =2.0v c l =50pf 58 150 ns v cc =4.5v 15 30 v cc =6.0v 13 26 v cc =2.0v c l =150pf 82 200 v cc =4.5v 22 40 v cc =6.0v 19 34 propagation delay from input (le) to output (q) v cc =2.0v c l =50pf 73 175 v cc =4.5v 18 35 v cc =6.0v 15 30 v cc =2.0v c l =150pf 100 225 v cc =4.5v 24 45 v cc =6.0v 20 38 output enable time from input ( oe ) to output (q) t pzl /t pzh v cc =2.0v c l =50pf 65 150 ns v cc =4.5v 17 30 v cc =6.0v 14 26 v cc =2.0v c l =150pf 90 200 v cc =4.5v 23 40 v cc =6.0v 19 34 output disable time from input ( oe ) to output (q) t plz /t phz v cc =2.0v c l =50pf 50 150 ns v cc =4.5v 15 30 v cc =6.0v 13 26 to q t t v cc =2.0v c l =150pf 28 60 ns v cc =4.5v 8 12 v cc =6.0v 6 10 pulse width t w v cc =2.0v 80 ns v cc =4.5v 16 v cc =6.0v 14 setup time t su v cc =2.0v 50 ns v cc =4.5v 10 v cc =6.0v 9 hold time t h v cc =2.0v 20 ns v cc =4.5v 10 v cc =6.0v 10 ? operating characteristics (t a =25 , unless otherwise specified) parameter symbol test conditions min typ max unit power dissipation capacitance c pd no load 100 pf
u74hc373 cmos ic unisonic technologies co., ltd 5 of 5 www.unisonic.com.tw qw-r502-296.c ? test circuit and waveforms r l c l s 1 s 2 t pzh 1k ? 50pf, 150pf open closed t pzl closed open t phz 1k ? 50pf open closed t plz closed open t phl - 50pf, 150pf open open t plh note: c l includes probe and jig capacitance. prr Q 1mhz, zo=50 ? , t r =6ns, t f =6ns 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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