unisonic technologies co., ltd u74ahc2g126 cmos ic www.unisonic.com.tw 1 of 5 copyright ? 2016 unisonic technologies co., ltd qw-r126-037.a dual bus buffer gate with 3-state outputs ? description the u74ahc2g126 consists of two bus buffers with 3-state output controlled by enable input (noe ), when noe is low, the output is disable. ? features * wide supply voltage range from 2.0v to 5.5v * low static power consumption; i cc =2 a (max.) * 8ma output driver at 5v ? ordering information ordering number package packing U74AHC2G126G-P08-R tssop-8 tape reel ? marking
u74ahc2g126 cmos ic unisonic technologies co., ltd 2 of 5 www.unisonic.com.tw qw-r126-037.a ? pin configuration ? function table input(oe) input(a) output(y) h l l h h h l x z note: h: high voltage level; l: low volt age level; z: high impedance; x: don?care ? logic diagram (positive logic) logic symbol iec logic symbol
u74ahc2g126 cmos ic unisonic technologies co., ltd 3 of 5 www.unisonic.com.tw qw-r126-037.a ? absolute maximum rating parameter symbol conditions ratings unit supply voltage v cc -0.5 ~ +7.0 v input voltage v in -0.5 ~ +7.0 v output voltage v out -0.5 ~ v cc +0.5 v continuous v cc or gnd current i cc 50 ma continuous output current i out v out =0v ~ v cc 25 ma input clamp current i ik v in <0v -20 ma output clamp current i ok v out >v cc or v out <0v 20 ma storage temperature range t stg -65 ~ +150 c note: 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. ? recommended operating conditions parameter symbol test conditions min typ max unit operating 2.0 5.5 v supply voltage v cc data retention only 1.5 v input voltage v in 0 5.5 v output voltage v out high or low state 0 v cc v operating temperature (note) t a -40 125 c v cc =3.3v0.3v 100 ns/v input transition rise or fall rate ? t/ ? v v cc =5v0.5v 20 ns/v note: this condition is only determined from desig n. it can't be 100% tested in mass production. ? electrical characteristics (t a =25c , unless otherwise specified) parameter symbol test conditions min typ max unit v cc =2.0v 1.5 v v cc =3.0v 2.1 v high-level input voltage v ih v cc =5.5v 3.85 v v cc =2.0v 0.5 v v cc =3.0v 0.9 v low-level input voltage v il v cc =5.5v 1.65 v v cc =2.0v 1.9 2 v v cc =3.0v 2.9 3 v v cc =4.5v i oh =-50 a 4.4 4.5 v v cc =3.0v, i oh =-4ma 2.58 v high-level output voltage v oh v cc =4.5v, i oh =-8ma 3.94 v v cc =2.0v 0.1 v v cc =3.0v 0.1 v v cc =4.5v i oh =-50 a 0.1 v v cc =3.0v, i oh =-4ma 0.36 v low-level output voltage v ol v cc =4.5v, i oh =-8ma 0.36 v input leakage current i i(leak) v cc =5.5v, v in = v cc or gnd 0.1 a 3-state output off-state current i oz v in =v ih or v il , v out =v cc or gnd, v cc =5.5v 0.25 a quiescent supply current i cc v cc =5.5v, v in =v cc or gnd, i out =0a 2 a input capacitance c i v cc =5.0v, v in =v cc or gnd 2 pf
u74ahc2g126 cmos ic unisonic technologies co., ltd 4 of 5 www.unisonic.com.tw qw-r126-037.a ? switching characteristics (t a =25c , unless otherwise specified) parameter symbol test conditions min typ max unit v cc =3.30.3v 9.5 ns c l =15pf v cc =50.5v 6.5 ns v cc =3.30.3v 13 ns propagation delay from input (a) to output(y) t pd c l =50pf v cc =50.5v 8.5 ns v cc =3.30.3v 9.5 ns c l =15pf v cc =50.5v 6 ns v cc =3.30.3v 13 ns propagation delay from input (oe) to output(y) t en c l =50pf v cc =50.5v 8 ns v cc =3.30.3v 11.5 ns c l =15pf v cc =50.5v 8 ns v cc =3.30.3v 15 ns propagation delay from input (oe) to output(y) t dis c l =50pf v cc =50.5v 10 ns ? operating characteristics (f=10mhz, t a =25c , unless otherwise specified) parameter symbol test conditions min typ max unit power dissipation capacitance c pd v cc =5v, no load. 14 pf
u74ahc2g126 cmos ic unisonic technologies co., ltd 5 of 5 www.unisonic.com.tw qw-r126-037.a ? test circuit and waveforms notes: 1. c l includes probe and jig capacitance. 2. all input pulses are supplied by generator s having the following characteristics: prr 10mhz, z o = 50 ? . 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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