unisonic technologies co., ltd u74lvc374 cmos ic www.unisonic.com.tw 1 of 6 copyright ? 2009 unisonic technologies co., ltd qw-r502-369.a octal edge-triggered d-type flip-flops with 3-state outputs ? description the u74lvc374 is an octal edge-triggered d-type flip-flop with 3-state outputs and 8 channels. ? features * operate from 1.65v to 3.6v * max t pd of 6.5ns at 3.3 v * typical v ol < 0.8v @ v cc =3.3v (ta=25c) * typical v oh > 2.0v @ v cc =3.3v (ta=25c) * power off disables outputs, permitting live insertion * halogen free tssop-20 ? ordering information ordering number package packing U74LVC374G-P20-T tssop-20 tape reel
u74lvc374 cmos ic unisonic technologies co., ltd 2 of 6 www.unisonic.com.tw qw-r502-369.a ? pin configuration ? function table inputs ) oe ( inputs(clk) inputs(d) output(q) l ? h h l ? l l l l /h x q0 h x x z note: h: high voltage level; l: low voltage level. ? logic symbol 1 3 4 7 8 13 14 17 18 11 19 16 15 12 9 6 5 2 1q 2q 8q clk 3q 4q 5q 6q 7q 2d 3d 4d 5d 6d 7d 8d 1d 1d en c1 oe ? logic diagram
u74lvc374 cmos ic unisonic technologies co., ltd 3 of 6 www.unisonic.com.tw qw-r502-369.a ? absolute maximum rating parameter symbol ratings unit supply voltage v cc -0.5 ~ +6.5 v input voltage v in -0.5 ~ +6.5 v voltage range applied to any output in the high-impedance or power-off state -0.5 ~ +6.5 v voltage range applied to any output in the high or low state v out -0.5 ~ v cc +0.5 v v cc or gnd current i cc 100 ma output current i out 50 ma input clamp current i ik -50 ma output clamp current i ok -50 ma operating temperature t opr -40 ~ + 85 c storage temperature t stg -65 ~ + 150 c note: absolute maximum ratings are those values beyo nd 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 ja 83 c/w ? recommended operating conditions parameter symbol test conditions min typ max unit operating 1.65 3.6 v supply voltage v cc data retention only 1.5 v v cc =1.65v to 1.95v 0.65 v cc v v cc =2.3v to 2.7v 1.7 v high-level input voltage v ih v cc =2.7v to 3.6v 2 v v cc =1.65v to 1.95v 0.35 v cc v v cc =2.3v to 2.7v 0.7 v low-level input voltage v il v cc =2.7v to 3.6v 0.8 v input voltage v in 0 5.5 v high or low state 0 v cc v output voltage v out 3 state 0 5.5 v v cc =1.65v -4 ma v cc =2.3v -8 ma v cc =2.7v -12 ma high - level output current i oh v cc =3v -24 ma v cc =1.65v 4 ma v cc =2.3v 8 ma v cc =2.7v 12 ma low - level output current i ol v cc =3v 24 ma input transition rise or fall rate t/ v 10 ns/v
u74lvc374 cmos ic unisonic technologies co., ltd 4 of 6 www.unisonic.com.tw qw-r502-369.a ? electrical characteristics (ta=25 ) parameter symbol test conditions min typ (note1) max unit v cc =1.65~3.6v, i oh =-100 a v cc -0.2 v v cc =1.65v, i oh =-4ma 1.2 v v cc =2.3v, i oh =-8ma 1.7 v v cc =2.7v, i oh =-12ma 2.2 v v cc =3v, i oh =-12ma 2.4 v output voltage high-level v oh v cc =3v, i oh =-24ma 2.2 v v cc =1.65~3.6v, i ol =100 a 0.2 v v cc =1.65v, i ol =4m a 0.45 v v cc =2.3v, i ol =8m a 0.7 v v cc =2.7v, i ol =12m a 0.4 v output voltage low-level v ol v cc =3v, i ol =24m a 0.55 v input leakage current i i(leak) v cc =3.6v, v in =0 to 5.5v 5 a power off leakage current i off v cc =0v, v in or v out =5.5v 10 a 3-state output off-state current i oz v cc =3.6v, v out =0 to 5.5v 10 a v cc =3.6v, v in =v cc or gnd, i out =0 10 a quiescent supply current i cc v cc =3.6v,3.6v v in 5.5v , i out =0(note 2) 10 a additional quiescent supply current i cc v cc =2.7~3.6v one input at v cc -0.6v other inputs at v cc or gnd 500 a input capacitance c i v cc =3.3v, v i n =v cc or gnd 4 pf output capacitance c o v cc =3.3v, v out =v cc or gnd 5.5 pf notes: 1. v cc =3.3v. 2. this applies in the disabled state only. ? switching characteristics (ta=25 ) parameter symbol test conditions min typ max unit v cc =2.7v 8.1 ns from clk to q t plh /t phl v cc =3.3v0.3v 1.5 7 ns v cc =2.7v 8.5 ns from oe to q t pzl /t pzh v cc =3.3v0.3v 1.5 7.5 ns v cc =2.7v 7.1 ns from oe to q t plz /t phz v cc =3.3v0.3v 1.5 6.5 ns v cc =2.7v 80 mhz maximum clock frequency f max v cc =3.3v0.3v 100 mhz v cc =2.7v 80 mhz clock frequency f clock v cc =3.3v0.3v 100 mhz v cc =2.7v 3.3 ns pulse width t w v cc =3.3v0.3v 3.3 ns v cc =2.7v 2 ns setup time t su v cc =3.3v0.3v 2 ns v cc =2.7v 1.5 ns hold time t h v cc =3.3v0.3v 1.5 ns ? operating characteristics (ta=25 ) parameter symbol test conditions min typ max unit outputs enabled f=10mhz, v cc =3.3v 0.3v 54.5 pf power dissipation capacitance per flip-flop outputs disabled c pd f=10mhz, v cc =3.3v 0.3v 13.5 pf
u74lvc374 cmos ic unisonic technologies co., ltd 5 of 6 www.unisonic.com.tw qw-r502-369.a ? test circuit and waveforms from output v load gnd open s cl r l r l test s t plh /t phl open t phz /t pzh gnd t plz /t pzl v load test circuit inputs v cc v in t r , t f v m v load v c l r l 1.8v 0.15v v cc 2ns v cc /2 2 x v cc 0.15v 30pf 1k ? 2.5v 0.2v v cc 2ns v cc /2 2 x v cc 0.15v 30pf 500 ? 2.7v 2.7v 2.5ns 1.5v 6v 0.3v 50pf 500 ? 3.3v 0.3v 2.7v 2.5ns 1.5v 6v 0.3v 50pf 500 ? v in 0v v m v m input t w setup time and hold time pulse width v m v m v m v m v in 0v v oh v ol input output t plh t phl propagation delay times enable and disable times note: cl includes probe and jig capacitance. all input pulses are supplied by generators having the following characteristics: prr 10mhz, zo = 50 ? .
u74lvc374 cmos ic unisonic technologies co., ltd 6 of 6 www.unisonic.com.tw qw-r502-369.a 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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