unisonic technologies co., ltd u74act125 cmos ic www.unisonic.com.tw 1 of 6 copyright ? 2013 unisonic technologies co., ltd qw-r502-991.a quad buffer with 3-state outputs ? description the u74act125 contains four independent non-inverting buffers with 3-state outputs. ? features * outputs source/sink 24ma *act125 has ttl-compatible outputs sop-14 ? ordering information ordering number package packing lead free halogen free u74act125l-s14-r U74ACT125G-S14-R sop-14 tape reel
unisonic technologies co., ltd u74act125 cmos ic unisonic technologies co., ltd 2 of 6 www.unisonic.com.tw ver. a ? pin configuration ? function table (each gate) inputs output a n b n o n l l l l h h h x z h=high voltage level; l=low voltage level z=high impedance; x=immaterial ? logic diagram (positive logic) en 1 ieee/iec o 0 o 1 o 2 o 3 a 0 b 0 a 1 b 1 a 2 b 2 a 3 b 3 b 0 a 0 b 1 a 1 b 2 a 2 b 3 a 3 o 0 o 1 o 2 o 3
u74act125 cmos ic unisonic technologies co., ltd 3 of 6 www.unisonic.com.tw qw-r502-991. a ? absolute maximum rating (unless otherwise specified)(note 1) parameter symbol ratings unit supply voltage v cc -0.5~7 v input voltage v in -0.5~ v cc +0.5 v output voltage(active mode) v out -0.5~v cc +0.5 v input diode current(v in =-0.5v) i ik -20 ma input diode current(v in =v cc +0.5v) i ik +20 ma output diode current(v in =-0.5v) i ok -20 ma output diode current(v in =v cc +0.5v) i ok +20 ma output current i out 50 ma v cc or gnd current i cc 100 ma storage temperature t stg -65 ~ +150 c notes: 1. the input and output voltage ratings may be exc eeded 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 4.5 5.5 v input voltage v in 0 v cc v output voltage v out 0 v cc v minimum input edge rate ? v/ ? t v in from 0.8v to 2.0v v cc @ 4.5v, 5.5v 125 mv/ns operating temperature t a -40 +85 c ? static characteristics ( t a =25c, unless otherwise specified ) parameter symbol test conditions min typ max unit high level input voltage v ih v cc =4.5v 2 1.5 v v cc =5.5v 2 1.5 low level input voltage v il v cc =4.5v 1.5 0.8 v v cc =5.5v 1.5 0.8 high-level output voltage v oh i oh =-50ua v cc =4.5v 4.4 4.49 v v cc =5.5v 5.4 5.49 i oh =-24ma v cc =4.5v 3.86 v cc =5.5v 4.86 low-level output voltage v ol i ol =50ua v cc =4.5v 0.001 0.1 v v cc =5.5v 0.001 0.1 i ol =24ma v cc =4.5v 0.36 v cc =5.5v 0.36 input leakage current i i ( leak ) v cc = 5.5v, v in =v cc or gnd 0.1 a quiescent supply current i cc v cc = 5.5v, v in =5.5v or gnd i out =0 4 a maximum i cc /input i cct v cc = 5.5v, v i =v cc -2.1v 0.6 ma input capacitance c in v cc =open 4.5 pf 3-state current i oz v cc =5.5v, v i =v il , v ih v o =v cc , gnd 0.5 a
u74act125 cmos ic unisonic technologies co., ltd 4 of 6 www.unisonic.com.tw qw-r502-991. a ? dynamic characteristics (t a =25c, unless otherwise specified) see fig. 1 and fig. 2 for test circuit and waveforms. parameter symbol test conditions min typ max unit propagation delay data to output t plh v cc =5v, t r = t f =3ns, c l =50pf, r l =500 ? , f=1mhz 1 6.5 9 ns t phl 1 7 9 output enable time t pzh 1 6.0 8.5 ns t pzl 1 7.0 9.5 ns output disable time t phz 1 7.0 9.5 ns t plz 1 7.5 10 ns ? operating characteristics parameter symbol test conditions min typ max unit power dissipation capacitance c pd v cc =5v 45 pf
u74act125 cmos ic unisonic technologies co., ltd 5 of 6 www.unisonic.com.tw qw-r502-991. a ? test circuit and waveforms note: c l includes probe and jig capacitance. test switch t plh , t phl open t plz , t pzl 2v cc t pzh , t phz open fig. 1 load circuitry for switching times.
u74act125 cmos ic unisonic technologies co., ltd 6 of 6 www.unisonic.com.tw qw-r502-991. a ? test circuit and waveforms (cont.) fig. 2 propagation delay from input to output and output transition time 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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