unisonic technologies co., ltd u74lvc3157 cmos ic www.unisonic.com.tw 1 of 5 copyright ? 2010 unisonic technologies co., ltd qw-r502-358.c single-pole,double-throw analog switch ? description the utc u74lvc3157 is a low voltage single-pole, double-throw (spdt) analog switch intending for use in chopping, modem, signal gating, and signal multiplexing for analog-to-digital and digital-to-analog conversion systems. ? features * useful in both analog and digital applications * rail-to-rail signal handing * low on resistance: < 10 ? on typical @ 3.3v v cc * broad v cc operating range:1.65v to 5.5v * over-voltage tolerance of control input to 7.0v ? ordering information ordering number package packing u74lvc3157g-al6-r sot-363 tape reel ? marking
u74lvc3157 cmos ic unisonic technologies co., ltd 2 of 5 www.unisonic.com.tw qw-r502-358.c ? pin configuration ? function table input(s) output(y) l b0 connected to a h b1 connected to a h=high level l=low level ? logic diagram a s b1 b0 logic symbol analog symbol
u74lvc3157 cmos ic unisonic technologies co., ltd 3 of 5 www.unisonic.com.tw qw-r502-358.c ? absolute maximum rating parameter symbol ratings unit supply voltage v cc -0.5 ~ +7.0 v switch voltage v s -0.5 ~ v cc +0.5 v input voltage v in -0.5 ~ +7.0 v v cc or gnd current i cc 100 ma continuous output current i out 128 ma input clamp current (v in < 0v) i ik -50 ma operating temperature t opr -40 ~ + 85 c storage temperature t stg -65 ~ + 150 c note: 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. ? thermal data parameter symbol ratings unit junction to ambient ja 270 c/w ? recommended operating conditions parameter symbol test conditions min typ max unit supply voltage v cc 1.65 5.5 v control input voltage v in (note) 0 v cc v switch input voltage v in (note) 0 v cc v output voltage v out (note) 0 v cc v v cc =1.65v to 1.95v 0.75v cc v high-level input voltage v ih v cc =2.3v to 5.5v 0.7v cc v v cc =1.65v to 1.95v 0.25v cc v low-level input voltage v il v cc =2.3v to 5.5v 0.3v cc v control input v cc =2.3v ~ 3.6v 10 ns/v input rise or fall times v t control input v cc =4.5v ~ 5.5v 5 ns/v note: control input must be held h igh or low; it must not float ? electrical characteristics (ta=25 c , unless otherwise specified) parameter symbol test conditions min typ max unit v cc =4.5v, v in =0v ,i out =30ma 3.0 7.0 ? v cc =4.5v, v in =2.4v ,i out =-30ma 5.0 12.0 ? v cc =4.5v, v in =4.5v ,i out =-30ma 7.0 15.0 ? v cc =3v, v in =0v ,i out =24ma 4.0 9.0 ? v cc =3v, v in =3v ,i out =-24ma 10.0 20.0 ? v cc =2.3v, v in =0v ,i out =8ma 5.0 12.0 ? v cc =2.3v, v in =2.3v ,i out =-8ma 13.0 30.0 ? v cc =1.65v, v in =0v ,i out =4ma 6.5 20.0 ? switch on resistance r on v cc =1.65v, v in =1.65v ,i out =-4ma 17.0 50.0 ? v cc =4.5v, v bn =3.15v, i a =-30ma 0.15 ? v cc =3v, v bn =2.1v, i a =-24ma 0.2 ? v cc =2.3v, v bn =1.6v, i a =-8ma 0.5 ? on resistance match between channel r on v cc =1.65v, v bn =1.15v, i a =-4ma 0.5 ? input leakage current i i(leak) v cc =0 to 5.5v, 0 v in 5.5v 0.1 a off state leakage current i off v cc =1.65 to 5.5v, 0 a,b v cc 0.1 a quiescent supply current i q v cc =5.5v, v in =v cc or gnd, i out =0 1 a analog signal range v cc = v cc , v in =v cc or gnd 0 v cc v
u74lvc3157 cmos ic unisonic technologies co., ltd 4 of 5 www.unisonic.com.tw qw-r502-358.c ? switching characteristics (see test circuit and waveforms) parameter symbol test conditions min typ max unit v cc =1.65 ~ 1.95v 3.5 ns v cc =2.3 ~ 2.7v 1.2 ns v cc =3.0 ~ 3.6v 0.8 ns propagation delay bus to bus(note) t plh t phl c l =50 pf, r l =500 ? v cc =4.5 ~ 5.5v 0.3 ns v cc =1.65 ~ 1.95v 7.0 23.0 ns v cc =2.3 ~ 2.7v 3.5 13.0 ns v cc =3.0 ~ 3.6v 2.5 6.9 ns output enable time turn-on time (a to b n ) t pzl t pzh c l =50 pf, r l =500 ? v cc =4.5 ~ 5.5v 1.7 5.2 ns v cc =1.65 ~ 1.95v 3.0 12.5 ns v cc =2.3 ~ 2.7v 2.0 7.0 ns v cc =3.0 ~ 3.6v 1.2 5.0 ns output enable time turn-off time (a to b n ) t phz t plz c l =50 pf, r l =500 ? v cc =4.5 ~ 5.5v 0.8 3.5 ns note: guaranteed by design. ? dynamic characteristics (t a =25 ) parameter symbol test conditions min typ max unit v cc =1.8v 220 mhz v cc =2.3v 220 mhz v cc =3.0v, 220 mhz bandwidth bw r l =50 ? , switch on v cc =4.5v 220 mhz v cc =1.8v, -60 db v cc =2.3v -65 db v cc =3.0v -65 db off isolation o iso r l =50 ? , f=10mhz,switch off v cc =4.5v -65 db v cc =1.8v -66 db v cc =2.3v -66 db v cc =3.0v -66 db crosstalk x talk r l =50 ? , f=10mhz,switch on v cc =4.5v -66 db v cc =1.8v 0.015 % v cc =2.3v 0.025 % v cc =3.0v 0.015 % total harmonic distortion thd r l =600 ? ,c l =50pf, f=600hz~20khz v cc =4.5v 0.01 % ? operating characteristics (t a =25 ) parameter symbol test conditions min typ max unit control pin input capacitance c in v cc =0v 2.3 pf b port off capacitance c io-b v cc =5.0v 6.5 pf a port capacitance when switch is enabled c ioa-on v cc =5.0v 18.5 pf
u74lvc3157 cmos ic unisonic technologies co., ltd 5 of 5 www.unisonic.com.tw qw-r502-358.c ? test circuit and waveforms 0v v ol +0.3v v oh -0.3v v oh v ol control input output output v cc 50% 50% 50% 50% t pzh t pzl t plz t phz v oh v ol voltage waveforms propagation delay times voltage waveforms enable and disable times note: c l includes probe and jig capacitance. prr 1mhz, z o = 50 ? , t r 2.5ns, t f 2.5ns. 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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