unisonic technologies co., ltd u74lvc373 cmos ic www.unisonic.com.tw 1 of 5 copyright ? 2009 unisonic technologies co., ltd qw-r502-265.b octal transparent d-type latches with 3-state outputs ? description the utc u74lvc373 is a octal transparent d-type latch with 3-state outputs, and it has 8 channels. ? features * operate from 1.65v to 3.6v * inputs accept voltages to 5.5v * max t pd of 6.8ns @ 3.3v * typical v ol < 0.8v @ v cc =3.3v, ta=25c * typical v oh > 2.0v @ v cc =3.3v, ta=25c * support mixed-mode signal operat ion on all ports (5v input/output voltage with 3.3v v cc ) * i off supports partial-power-down mode operation * halogen free ? ordering information ordering number package packing U74LVC373G-P20-R tssop-20 tape reel u74lvc373g-r20-r ssop-20 tape reel
u74lvc373 cmos ic unisonic technologies co., ltd 2 of 5 www.unisonic.com.tw qw-r502-265.b ? pin configuration ? function table inputs( oe ) inputs(le) inputs(d) output(q) l h h h l h l l l l x q0 h x x z note: h: high voltage level; l: low voltage level. ? logic symbol ? logic diagram
u74lvc373 cmos ic unisonic technologies co., ltd 3 of 5 www.unisonic.com.tw qw-r502-265.b ? 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 -0.5 ~ 6.5 (note 2) output voltage v out -0.5 ~ v cc +0.5 (note 3) 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 storage temperature t stg -65 ~ + 150 note: 1. 2. 3. 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. voltage range applied to any output in th e high-impedance or power-off state. voltage range applied to any output in the high or low state, and v cc is provided in the recommended operating conditions table. ? thermal characteristics parameter symbol min typ max unit junction-to-ambient ja 115 /w ? recommended operating conditions parameter symbol test conditions min typ max unit operating 1.65 3.6 supply voltage v cc data retention only 1.5 v v cc =1.65v to 1.95v 0.65 v cc v cc =2.3v to 2.7v 1.7 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 cc =2.3v to 2.7v 0.7 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 output voltage v out 3 state 0 5.5 v v cc =1.65v -4 v cc =2.3v -8 v cc =2.7v -12 high-level output current i oh v cc =3v -24 ma v cc =1.65v 4 v cc =2.3v 8 v cc =2.7v 12 low-level output current i ol v cc =3v 24 ma input rise or fall times t r , t f 0 10 ns/v
u74lvc373 cmos ic unisonic technologies co., ltd 4 of 5 www.unisonic.com.tw qw-r502-265.b ? electrical characteristics parameter symbol test conditions min typ (note 1) max unit v cc =1.65~3.6v, i oh =-100 a v cc -0.2 v cc =1.65v, i oh =-4ma 1.2 v cc =2.3v, i oh =-8ma 1.7 v cc =2.7v, i oh =-12ma 2.2 v cc =3v, i oh =-12ma 2.4 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 cc =1.65v, i ol =4m a 0.45 v cc =2.3v, i ol =8m a 0.7 v cc =2.7v, i ol =12m a 0.4 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 disable output leakage 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 q v cc =3.6v, 3.6v v in 5.5v , i out =0(note 2) 10 a additional quiescent supply current i q 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 note: 1. 2. v cc =3.3v, ta=25c this applies in the disabled state only. ? switching characteristics parameter symbol test conditions min typ max unit v cc =2.7v 7.8 from d to q v cc =3.3v0.3v 1.5 6.8 v cc =2.7v 8.2 from le to q t plh /t phl v cc =3.3v0.3v 2 7.6 ns v cc =2.7v 8.7 from oe to q t pzl /t pzh v cc =3.3v0.3v 1.5 7.7 ns v cc =2.7v 7.6 from oe to q t plz /t phz v cc =3.3v0.3v 1.5 7 ns v cc =2.7v 3.3 pulse width t w v cc =3.3v0.3v 3.3 ns v cc =2.7v 2 setup time t su v cc =3.3v0.3v 2 ns v cc =2.7v 1.5 hold time t h v cc =3.3v0.3v 1.5 ns ? operating characteristics (t a =25 ) parameter symbol test conditions min typ max unit oe=0, f=10mhz, v cc =3.3v0.3v 46 power dissipation capacitance cpd oe=1, f=10mhz, v cc =3.3v0.3v 3 pf
u74lvc373 cmos ic unisonic technologies co., ltd 5 of 5 www.unisonic.com.tw qw-r502-265.b ? test circuit and waveforms v cc v in t plz /t pzl (v load ) t plh /t phl t phz /t pzh c l r l (note 1) v 1.8v0.15v v cc 2v cc open open 30pf 1k ? 0.15v 2.5v0.2v v cc 2v cc open gnd 30pf 500 ? 0.15v 2.7v 2.7v 6v open gnd 50pf 500 ? 0.3v 3.3v0.3v 2.7v 6v open gnd 50pf 500 ? 0.3v note: 1. c l includes probe and jig capacitance. note: 2. prr 10mhz, z o =50 ? , t thl 2ns, t tlh 2ns. 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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