unisonic technologies co., ltd u74lvc2g125 cmos ic www.unisonic.com.tw 1 of 6 copyright ? 2008 unisonic technologies co., ltd qw-r502-136.b dual bus buffer gate with 3-state outputs ? description the u74lvc2g125l consists of two bus buffers with 3-state output controlled by enable input (noe), when noe is high, the output is disable. inputs can be driven from either 3.3v or 5v devices, so the device can be used in a mix 3.3v/5v system. this device is full specified for partial power-down protective circuit, preventing the backflow current through the device when it is powered down. ? features * operation voltage range: 1.65~5.5v * low power dissipation * input accept voltage to 5.5v tssop-8 msop-8 lead-free: u74lvc2g125l halogen-free: u74lvc2g125g ? ordering information ordering number normal lead free plating halogen free package packing U74LVC2G125-P08-R u74lvc2g125l-p08-r u 74lvc2g125g-p08-r tssop-8 tape reel u74lvc2g125-p08-t u74lvc2g125l-p 08-t u74lvc2g125g-p08-t tssop-8 tube u74lvc2g125-sm1-r u74lvc2g125l-sm1-r u74lvc2g125g-sm1-r msop-8 tape reel u74lvc2g125-sm1-t u74lvc2g125l-sm1-t u74lvc2g125g-sm1-t msop-8 tube
u74lvc2g125 cmos ic unisonic technologies co., ltd 2 of 6 www.unisonic.com.tw qw-r502-136.b ? pin configuration 4 3 2 5 1a 2y gnd 2a v cc 6 1 7 8 1y 2oe 1oe ? function table (each gate) input output noe a y l l l l h h h x z ? logic diagram (positive logic)
u74lvc2g125 cmos ic unisonic technologies co., ltd 3 of 6 www.unisonic.com.tw qw-r502-136.b ? absolute maximum rating (unless otherwise specified)(note 1) parameter symbol ratings unit supply voltage v cc -0.5~6.5 v input voltage v in -0.5~6.5 v enable mode v out -0.5~v cc +0.5 v disable mode v out -0.5~6.5 v output voltage power-down mode v out -0.5~6.5 v input clamp current(v in <0) i ik -50 ma output clamp current(v out <0) i ok -50 ma output current i out 50 ma v cc or gnd current i cc 100 ma power dissipation p d 500 mw storage temperature t stg -65 ~ +150 note 1. the input and output voltage ratings may be exceeded if the input and output curr ent ratings are observed. 2. 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. ? recommended operating conditions parameter symbol test conditions min typ max unit supply voltage v cc operating 1.65 5.5 v input voltage v in 0 5.5 v v cc =1.65v~5.5v; enable mode 0 v cc v v cc =1.65v~5.5v; disable mode 0 5.5 v output voltage v out v cc =0v; power-down mode 0 5.5 v v cc =1.65~2.7v 0 20 ns/v input transition rise or fall rate t r , t f v cc =2.7~5.5v 0 10 ns/v operating temperature t a -40 85 ? static characteristics (t a =25 ) parameter symbol test conditions min typ max unit v cc = 1.65v ~ 1.95v 0.65v cc v v cc = 2.3v ~ 2.7v 1.7 v v cc = 2.7v ~ 3.6v 2 v high-level input voltage v ih v cc = 4.5v ~ 5.5v 0.7v cc v v cc = 1.65v~1.95v 0.35v cc v v cc = 2.3v ~ 2.7v 0.7 v v cc = 2.7v ~ 3.6v 0.8 v low-level input voltage v il v cc = 4.5v ~5.5v 0.3v cc v v cc = 1.65v ~ 5.5v, i oh =-100 a v cc 0.1 v v cc = 1.65v, i oh =-4ma 1.2 v v cc = 2.3v, i oh =-8ma 1.9 v v cc = 2.7v, i oh =-12ma 2.2 v v cc = 3v, i oh =-24ma 2.3 v high-level output voltage v oh v cc = 4.5v, i oh =-32ma 3.8 v v cc = 1.65v ~ 5.5v, i ol =100 a 0.1 v v cc = 1.65v, i ol =4ma 0.45 v v cc = 2.3v, i ol =8ma 0.3 v v cc = 2.7v, i ol =12ma 0.4 v v cc = 3v, i ol =24ma 0.55 v low-level output voltage v ol v cc = 4.5v, i ol =32ma 0.55 v
u74lvc2g125 cmos ic unisonic technologies co., ltd 4 of 6 www.unisonic.com.tw qw-r502-136.b ? static characteristics (cont.) parameter symbol test conditions min typ max unit input leakage current i i(leak) v cc = 5.5v, v in =5.5v or gnd 0.1 5 a output off-state current i oz v cc = 3.6v, v out =v cc or gnd 0.1 10 a power off leakage current i off(leak) v cc = 0v, v in or v out =5.5v 0.1 10 a quiescent supply current i q v cc = 5.5v, v in =v cc or gnd, i out =0 0.1 10 a additional quiescent supply current i q v cc = 2.3v ~ 5.5v, one input at v cc -0.6v, other inputs at v cc or gnd 5 500 a input capacitance c in v in =v cc or gnd 2 pf ? dynamic characteristics (t a =25 ) parameter symbol test conditions min typ max unit v cc =1.8v0.15 1 3.7 9.1 v cc =2.5v0.2 0.5 2.5 4.8 v cc =2.7v 1 2.7 4.8 v cc =3.3v0.3 0.5 2.3 4.3 propagation delay from input (a) to output(y) t plh /t phl v cc =5v0.5 0.5 1.9 3.7 ns v cc =1.8v0.15 1.5 4.3 9.9 v cc =2.5v0.2 1 2.8 5.6 v cc =2.7v 1.5 3.3 5.7 v cc =3.3v0.3 0.5 2.4 4.7 propagation delay from input (n ? ) to output(y) t pzl /t pzh v cc =5v0.5 0.5 2 3.8 ns v cc =1.8v0.15 1 3.5 11.6 v cc =2.5v0.2 0.5 1.8 5.8 v cc =2.7v 1 2.7 4.8 v cc =3.3v0.3 1 2.7 4.6 propagation delay from input (n ? ) to output(y) t plz /t phz v cc =5v0.5 0.5 1.8 3.4 ns ? operating characteristics parameter symbol test conditions min typ max unit output enable, f=10mhz 18 power dissipation capacitance cpd output disable, f=10mhz 5 pf
u74lvc2g125 cmos ic unisonic technologies co., ltd 5 of 6 www.unisonic.com.tw qw-r502-136.b ? test circuit and waveforms note: c l includes probe and jig capacitance. v cc v in t r , t f v m v ext c l r l v 1.8v0.15v v cc 2ns v cc /2 2v cc 30pf 1k ? 0.15v 2.5v0.2v v cc 2ns v cc /2 2v cc 30pf 500 ? 0.15v 2.7v 2.7v 2.5ns 1.5v 6v 50pf 500 ? 0.3v 3.3v0.3v 2.7 v 2.5ns 1.5v 6v 50pf 500 ? 0.3v 5v0.5v v cc 2.5ns v cc /2 2v cc 50pf 500 ? 0.3v
u74lvc2g125 cmos ic unisonic technologies co., ltd 6 of 6 www.unisonic.com.tw qw-r502-136.b 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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