unisonic technologies co., ltd u74lvc241 cmos ic www.unisonic.com.tw 1 of 5 copyright ? 2016 unisonic technologies co., ltd qw-r126-030.a octal buffer/driver with 3-state outputs ? description the u74lvc241 contains two 4-bit line drivers with separate output-enable(1 oe /2oe) inputs. when (1 oe /2oe) is low and high, the device passes data from the a to the y. when(1 oe /2oe) is high and low, the outputs are in the high-impedance state. the u74lvc241 can be used in a mixed 3.3v/5v system environment. this device has power-down protective circuit, preventing device destruction when it is powered down. ? features * operate from 1.65v to 3.6v * input accept voltages to 5.5v * partial-power-down mode operation * max tpd is 6.1ns at 3.3v ? ordering information ordering number package packing U74LVC241G-S20-R sop-20 tape reel ? marking
u74lvc241 cmos ic unisonic technologies co., ltd 2 of 5 www.unisonic.com.tw qw-r126-030.a ? pin configuration 1 2 3 4 5 6 7 17 16 15 14 13 12 11 gnd v cc 1oe 1a1 2y4 1a2 2y3 1a3 1y2 2a3 1y3 2a2 1y4 2a1 8 9 10 1a4 2y1 2y2 20 19 18 1y1 2oe 2a4 ? function table (each gate) input output 1 oe 1an 2oe 2an 1yn 2yn l l h l l l l h h h h h h x l x z z h = high voltage level l = low voltage level x = don?t care z = high-impedance off-state ? logic diagram (positive logic)
u74lvc241 cmos ic unisonic technologies co., ltd 3 of 5 www.unisonic.com.tw qw-r126-030.a ? absolute maximum rating parameter symbol conditions ratings unit supply voltage v cc -0.5 ~ +6.5 v input voltage v in -0.5 ~ +6.5 v output in the high or low state -0.5 ~ v cc +0.5 v output voltage v out output in the power-off state -0.5 ~ +6.5 v continuous v cc or gnd current i cc 100 ma continuous output current i out v out =0v ~ v cc 50 ma input clamp current i ik v in <0v -50 ma output clamp current i ok v out >v cc or v out <0v -50 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 1.65 3.6 v supply voltage v cc data retention only 1.2 v input voltage v in 0 5.5 v high or low state 0 v cc v output voltage v out power-off state 0 5.5 v operating temperature t a -40 85 c v cc =1.65v ~ 2.7v 0 20 ns/v input transition rise or fall rate ? t/ ? v v cc =2.7v ~ 3.6v 0 10 ns/v ? electrical characteristics (t a =25c , unless otherwise specified) parameter symbol test conditions min typ max unit v cc =1.8v0.15v 0.65v cc v v cc =2.5v0.2v 1.7 v high-level input voltage v ih v cc =3.3v0.3v 2 v v cc =1.8v0.15v 0.35v cc v v cc =2.5v0.2v 0.7 v low-level input voltage v il v cc =3.3v0.3v 0.8 v v cc =1.65 ~ 3.6v, i oh =-100 a v cc -0.2 v v cc =1.65v, i oh =-4ma 1.2 v v cc =2.3v, i oh =-8ma 1.7 v v cc =2.7v, i oh =-12ma 2.2 v i oh =-18ma 2.4 v high-level output voltage v oh v cc =3.0v i oh =-24ma 2.2 v v cc =1.65 ~ 3.6v, i oh =100 a 0.2 v v cc =1.65v, i oh =4ma 0.45 v v cc =2.3v, i oh =8ma 0.7 v v cc =2.7v, i oh =12ma 0.4 v low-level output voltage v ol v cc =3.0v, i oh =24ma 0.55 v
u74lvc241 cmos ic unisonic technologies co., ltd 4 of 5 www.unisonic.com.tw qw-r126-030.a ? electrical characteristics (cont.) parameter symbol test conditions min typ max unit input leakage current i i(leak) v cc =3.6v, v in =5.5v or gnd 0.1 5 a power off leakage current i off v cc =0v, v in or v out =5.5v 0.1 10 a off-state output current i oz v cc =3.6v, v in = v ih or v il , v out =5.5v or gnd 0.1 10 a quiescent supply current i cc v cc =2.7 ~ 3.6v, v in =v cc -0.6v, i out =0a 0.1 10 a a dditional quiescent supply current per input pin ? i cc v cc =3 ~ 5.5v, one input at v cc -0.6v, other inputs at v cc or gnd 5 500 a input capacitance c i v cc =0 ~ 3.6v, v in =gnd to v cc 5.0 pf ? switching characteristics (t a =25c , unless otherwise specified) parameter symbol test conditions min typ max unit v cc =1.8v0.15v 1.5 5.9 14.1 ns v cc =2.5v0.2v 1.0 3.2 7.3 ns v cc =2.7v 1.5 3.2 7.1 ns propagation delay from input (an) to output(yn) t pd v cc =3.3v0.3v 1.5 2.7 6.1 ns v cc =1.8v0.15v 1.5 6.6 16.2 ns v cc =2.5v0.2v 1.5 3.7 8.9 ns v cc =2.7v 1.5 3.8 8.1 ns propagation delay from input (1 oe ) to output(1yn) t en v cc =3.3v0.3v 1.5 3.0 7.1 ns v cc =1.8v0.15v 2.5 5.5 13.8 ns v cc =2.5v0.2v 2.1 4.2 7.4 ns v cc =2.7v 1.5 3.7 8.1 ns propagation delay from input (2oe) to output(2yn) t en v cc =3.3v0.3v 1.5 3.4 7.1 ns v cc =1.8v0.15v 2.5 4.3 10 ns v cc =2.5v0.2v 1.0 3.5 5.6 ns v cc =2.7v 1.5 3.2 7.0 ns propagation delay from input (1 oe ) to output(1yn) t dis v cc =3.3v0.3v 1.5 3.0 6.0 ns v cc =1.8v0.15v 1.5 3.5 9.9 ns v cc =2.5v0.2v 0.5 3.1 5.6 ns v cc =2.7v 1.5 3.4 7.0 ns propagation delay from input (2oe) to output(2yn) t dis v cc =3.3v0.3v 1.5 2.6 6.0 ns ? operating characteristics (f=10mhz, v in =gnd to v cc , t a =25c , unless otherwise specified) parameter symbol test conditions min typ max unit v cc =1.8v0.15v 14.4 pf v cc =2.5v0.2v 17.9 pf power dissipation capacitance c pd v cc =3.3v0.3v 21 pf
u74lvc241 cmos ic unisonic technologies co., ltd 5 of 5 www.unisonic.com.tw qw-r126-030.a ? test circuit and waveforms v ext v cc v in t r /t f v m v c l r l t plh /t phl t pzh /t phz t pzl /t plz 1.8v0.15v v cc 2ns v cc /2 0.15v 30pf 1k ? open gnd 2v cc 2.5v0.2v v cc 2ns v cc /2 0.15v 30pf 500 ? open gnd 2v cc 2.7v 2.7v 2.5ns 1.5v 0.3v 50pf 500 ? open gnd 2v cc 3.3v0.3v 2.7v 2.5ns 1.5v 0.3v 50pf 500 ? open gnd 2v cc 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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