unisonic technologies co., ltd u74ahct1g125 cmos ic www.unisonic.com.tw 1 of 6 copyright ? 2015 unisonic technologies co., ltd qw-r502-093.g single bus buffer gate with 3-state output ? description the utc u74ahct1g125 is a single bus buffer gate with 3-state output controlled by enable input ( oe ), when oe is high, the output is disabled. ? features * operation voltage range: 4.5v ~5.5v * low power current: i cc =1 a (max.) * 8ma output drive at 5v * inputs are ttl-voltage compatible ? ordering information ordering number package packing U74AHCT1G125G-AE5-R sot-23-5 tape reel u74ahct1g125g-af5-r sot-25 tape reel u74ahct1g125g-al5-r sot-353 tape reel ? marking
u74ahct1g125 cmos ic unisonic technologies co., ltd 2 of 6 www.unisonic.com.tw qw-r502-093.g ? pin configuration 3 2 1 4 5 agnd y v cc oe ? function table (each gate) input output oe a y l l l l h h h x z ? logic diagram (positive logic) logic symbol iec logic symbol
u74ahct1g125 cmos ic unisonic technologies co., ltd 3 of 6 www.unisonic.com.tw qw-r502-093.g ? absolute maximum ratings (unless otherwise specified)(note 2) 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 input clamp current i ik -20 ma output clamp current i ok 20 ma output current i out 25 ma v cc or gnd current i cc 50 ma storage temperature t stg -65 ~ +150 notes: 1. absolute maximum ratings are those values beyond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device oper ation is not implied. 2. the input and output voltage ratings may be exceeded if the input and output curr ent ratings are observed. ? recommended operating comditions parameter symbol conditions min typ max unit supply voltage v cc 4.5 5.5 v input voltage v in 0 5.5 v output voltage v out 0 v cc v input transition rise or fall rate ? t/ ? v v cc =5.0+0.5v 20 ns/v operating temperature t a -40 125 ? static characteristics (t a =25 , unless otherwise specified) parameter symbol test conditions min typ max unit high-level v ih v cc =4.5v~5.5v 2 v input voltage low-level v il v cc =4.5v~5.5v 0.8 v i oh =-50 a 4.4 4.5 high-level v oh v cc =4.5v i oh =-8ma 3.94 v i ol =50 a 0.1 output voltage low-level v ol v cc =4.5v i oh =8ma 0.36 v input leakage current i i(leak) v cc =0v~5.5v, v in =v cc or gnd 0.1 a output current, off-state i oz v cc =5.5v, v out =v cc or gnd 0.25 a quiescent supply current i q v cc =5.5v, v in =v cc or gnd, i out =0 1 a a dditional quiescent suppl y current ? i q v cc =5.5v, one input at 3.4v, other input at v cc or gnd 1.35 ma input capacitance c in v cc =5v, v in =v cc or gnd 4 10 pf output capacitance c out v cc =5v, v out =v cc or gnd 10 pf ? dynamic characteristics (t a =25 , input: t r , t f 3ns; prr 1mhz) parameter symbol test conditions min typ max unit t plh 3.8 5.5 propagation delay from a to y t phl 3.8 5.5 ns t pzh 3.6 5.1 turn-on time oe to y t pzl 3.6 5.1 ns t phz 4.6 6.8 turn-off time oe to y t plz c l =15pf, v cc =5v0.5v 4.6 6.8 ns t plh 5.3 7.5 propagation delay from a to y t phl 5.3 7.5 ns t pzh 5.1 7.1 turn-on time oe to y t pzl 5.1 7.1 ns t phz 6.1 8.8 turn-off time oe to y t plz c l =50pf, v cc =5v0.5v 6.1 8.8 ns
u74ahct1g125 cmos ic unisonic technologies co., ltd 4 of 6 www.unisonic.com.tw qw-r502-093.g ? operating characteristics (v cc 5v, t a =25c, unless otherwise specified) parameter symbol test conditions min typ max unit power dissipation capacitance c pd v cc =5v, f=1mhz, no load 14 pf
u74ahct1g125 cmos ic unisonic technologies co., ltd 5 of 6 www.unisonic.com.tw qw-r502-093.g ? test circuit and waveforms note: c l includes probe and jig capacitance. fig-1 propagation delay from a to y fig-2 the turn-on and turn-off times. a y vi vo vo vi 1/2 v cc 1/2 v cc 1.5v 1.5v t plh t phl c l oe low 3v gnd
u74ahct1g125 cmos ic unisonic technologies co., ltd 6 of 6 www.unisonic.com.tw qw-r502-093.g 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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