unisonic technologies co., ltd u74ahc1g125 cmos ic www.unisonic.com.tw 1 of 6 copyright ? 2011 unisonic technologies co., ltd qw-r502-683.a single bus buffer gate with 3-state output ? description the u74ahc1g125 is a single bus buffer gate/line driver with 3-state output. when oe is high, the y output are in a high-impedance state. when oe is low, the device passes noninverted data from the a input to the y output. to ensure the high-impedance st ate during power up or power down, oe should be tied to v cc through a pull-up resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. ? features * wide supply voltage range from 2v to 5.5v * max t pd of 6 ns from a to y at 5v * low power consumption, i cc = 1 a (max) at 5.5v * 8ma output driver at 5v ? ordering information ordering number package packing lead free halogen free u74ahc1g125l-af5-r u74ahc1g125g-af5-r sot-25 tape reel u74ahc1g125l-al5-r U74AHC1G125G-AL5-R sot-353 tape reel ? marking
u74ahc1g125 cmos ic unisonic technologies co., ltd 2 of 6 www.unisonic.com.tw qw-r502-683.a ? pin configuration 3 2 1 4 5 a gnd yv cc oe ? function table input output oe a y l l h h l x h l z ? logic diagram (positive logic) 1 a 2 4 oe y
u74ahc1g125 cmos ic unisonic technologies co., ltd 3 of 6 www.unisonic.com.tw qw-r502-683.a ? absolute maximum rating (unless otherwise specified) parameter symbol ratings unit supply voltage range v cc -0.5~7 v input voltage range v in -0.5~7 v output voltage range v out -0.5~v cc +0.5 v input clamp current (v in <0) i ik -20 ma output clamp current (v out <0, or v out >v cc ) 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 c note: 1. the input and output voltage ratings may be exce eded if the input and output cu rrent 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 comditions parameter symbol conditions min typ max unit supply voltage v cc 2 5.5 v high-level input voltage v ih v cc = 2v 1.5 v v cc = 3v 2.1 v cc = 5.5v 3.85 low-level input voltage v il v cc = 2v 0.5 v v cc = 3v 0.9 v cc = 5.5v 1.65 input voltage v in 0 5.5 v output voltage v out 0 v cc v high-level output current i oh v cc = 2v -50 a v cc = 3.30.3v -4 ma v cc = 50.5v -8 low-level output current i ol v cc = 2v 50 a v cc = 3.30.3v 4 ma v cc = 50.5v 8 input transition rise or fall rate t/ v v cc = 3.30.3v 100 ns/v v cc = 50.5v 20 operating temperature t a -40 85 c ? electrical characteristics (t a =25c , unless otherwise specified) parameter symbol test conditions min typ max unit high-level output voltage v oh i oh = -50 a, v cc = 2v 1.9 2 v i oh = -50 a, v cc = 3v 2.9 3 i oh = -50 a, v cc = 4.5v 4.4 4.5 i oh = -4 ma, v cc = 3v 2.58 i oh = -8 ma, v cc = 4.5v 3.94 low-level output voltage v ol i oh = 50 a, v cc = 2v 0.1 v i oh = 50 a, v cc = 3v 0.1 i oh = 50 a, v cc = 4.5v 0.1 i oh = 4 ma, v cc = 3v 0.36 i oh = 8 ma, v cc = 4.5v 0.36 input leakage current (a or oe input) i i(leak) v in =5.5v or gnd,v cc =0 to 5.5v 0.1 a high-impedance state current i oz v in =v cc or gnd,v cc = 5.5v 0.25 a quiescent supply current i cc v in =v cc or gnd,i out =0,v cc =5.5v 1 a input capacitance c in v in =v cc or gnd, v cc =5v 4 10 pf output capacitance c out v o =v cc or gnd, v cc =5v 10 pf
u74ahc1g125 cmos ic unisonic technologies co., ltd 4 of 6 www.unisonic.com.tw qw-r502-683.a ? switching characteristics (v cc = 3.3v 0.3v, t a =25c) parameter symbol test conditions min typ max unit propagation delay from input a to output y, t pd t plh c l =15pf, r l =1k ? 5.6 8 ns c l =50pf, r l =1k ? 8.1 11.5 t phl c l =15pf, r l =1k ? 5.6 8 ns c l =50pf, r l =1k ? 8.1 11.5 propagation delay from input oe to output y, t en t pzh c l =15pf, r l =1k ? 5.4 8 ns c l =50pf, r l =1k ? 7.9 11.5 t pzl c l =15pf, r l =1k ? 5.4 8 ns c l =50pf, r l =1k ? 7.9 11.5 propagation delay from input oe to output y, t dis t phz c l =15pf, r l =1k ? 7 9.7 ns c l =50pf, r l =1k ? 9.5 13.2 t plz c l =15pf, r l =1k ? 7 9.7 ns c l =50pf, r l =1k ? 9.5 13.2 ? switching characteristics (v cc = 5v 0.5v, t a =25c) parameter symbol test conditions min typ max unit propagation delay from input a to output y, t pd t plh c l =15pf, r l =1k ? 3.8 5.5 ns c l =50pf, r l =1k ? 5.3 7.5 t phl c l =15pf, r l =1k ? 3.8 5.5 ns c l =50pf, r l =1k ? 5.3 7.5 propagation delay from input oe to output y, t en t pzh c l =15pf, r l =1k ? 3.6 5.1 ns c l =50pf, r l =1k ? 5.1 7.1 t pzl c l =15pf, r l =1k ? 3.6 5.1 ns c l =50pf, r l =1k ? 5.1 7.1 propagation delay from input oe to output y, t dis t phz c l =15pf, r l =1k ? 4.6 6.8 ns c l =50pf, r l =1k ? 6.1 8.8 t plz c l =15pf, r l =1k ? 4.6 6.8 ns c l =50pf, r l =1k ? 6.1 8.8 ? operating characteristics (t a =25c) parameter symbol test conditions min typ max unit power dissipation capacitance c pd v cc = 5v, f=1mhz, no load 14 pf
u74ahc1g125 cmos ic unisonic technologies co., ltd 5 of 6 www.unisonic.com.tw qw-r502-683.a ? test circuit and waveforms test s1 t plh /t phl open t plz /t pzl v load t phz /t pzh gnd v cc input v m v load c l r l v v in t r , t f 3.3v0.3v v cc 3ns v cc /2 v cc 15pf 1k ? 0.3v 50pf 5v0.5v v cc 3ns v cc /2 v cc 15pf 1k ? 0.5v 50pf
u74ahc1g125 cmos ic unisonic technologies co., ltd 6 of 6 www.unisonic.com.tw qw-r502-683.a ? test circuit and waveforms(cont.) v m v m v m v in 0 v v oh input output t pzh t phz t plz t pzl v load v ol output v m s1 at gnd s1 at v load 0v v ol +v v oh -v notes: 1. c l includes probe and jig capacitance. 2. all input pulses are supplied by generat ors having the following characteristics: p rr 1mhz, 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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