unisonic technologies co., ltd U74CBTLV3125 cmos ic www.unisonic.com.tw 1 of 6 copyright ? 2013 unisonic technologies co., ltd qw-r502-959,a lo w -voltage qu a druple fet bus switch ? description the U74CBTLV3125 quadruple fet bus switch features independent line switches. each switch is disabled when the associated output-enable ( oe ) input is high. the device is fully specified for partial-power-down applications using i off . the i off feature ensures that damaging current will not backflow through the device when it is powered down. the device has isolation during power off. to ensure the high-impedance state during power up or power down, oe should be tied to v cc through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. ? features * 5- ? switch connection between two ports * standard ?125-type pinout * isolation under power-off conditions ? ordering information ordering number package packing lead free halogen free U74CBTLV3125l-p14-t U74CBTLV3125g-p14-t tssop-14 tube U74CBTLV3125l-p14-r U74CBTLV3125g-p14-r tssop-14 tape reel
U74CBTLV3125 cmos ic unisonic technologies co., ltd 2 of 6 www.unisonic.com.tw qw-r502-959,a ? pin configuration 1o e 2oe 3oe 4oe ? function table (each bus switch) input oe function l a port = b port h disconnect ? logic diagram (positive logic)
U74CBTLV3125 cmos ic unisonic technologies co., ltd 3 of 6 www.unisonic.com.tw qw-r502-959,a ? simplified schematic (each fet switch)
U74CBTLV3125 cmos ic unisonic technologies co., ltd 4 of 6 www.unisonic.com.tw qw-r502-959,a ? absolute maximum rating (unless otherwise specified)(note 1) parameter symbol ratings unit supply voltage v cc -0.5~4.6 v input voltage v i -0.5~4.6 v continuous channel current 128 ma input clamp current(v i/o <0) i ik -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. the package thermal impedance is ca lculated in accordance with jesd 51. ? thermal data parameter symbol ratings unit junction to ambient ja 113 c/w ? recommended operating comditions parameter symbol min typ max unit supply voltage v cc 2.3 3.6 v high-control input voltage v ih v cc =2.3v~2.7v 1.7 v v cc =2.7v~3.6v 2 low-control input voltage v il v cc =2.3v~2.7v 0.7 v v cc =2.7v~3.6v 0.8 operating temperature t a -40 -85 c note: all unused control inputs of the device must be held at v cc or gnd to ensure proper device operation. ? static characteristics parameter symbol test conditions min typ max unit digital input diode voltage v ik v cc =3v, i i =-18ma -1.2 v input leakage current i i v cc =3.6v, v i =v cc or gnd 1 a power off leakage carrent i off v cc =0,v i or v o =0 to 4.5v 10 a quiosceut supply current i cc v cc =3.6v, v i = v cc or gnd, i o =0 10 a a dditional quiescent supply current control inputs ? i cc v cc =3.6v, one input at 3v, other inputs at v cc or gnd 300 a control input capacitance c i v o =3v or 0 2.5 pf i/o capacitance (off) c io ( off ) v o =3v or 0, oe=gnd 7 pf resistor between two ports r on v cc =2.3v typ at v cc =2.5v v i =0 i i =64ma 5 8 ? i i =24ma 5 8 v i =1.7v i i =-15ma 27 40 v cc =3v v i =0v i i =64ma 5 7 i i =24ma 5 7 v i =2.4v i i =-15ma 10 15 note: all typical values are at v cc =3.3v, t a =25c, unless otherwise noted. ? dynamic characteristics see fig. 1 and fig. 2 for test circuit and waveforms. parameter symbol test conditions min typ max unit from input (a or b) to output (b or a) t pd ( t plh /t phl ) v cc =2.5v0.2v 0.35 ns v cc =3.3v0.3v 0.25 from input (oe) to output (a or b) t en ( t pzl /t pzh ) v cc =2.5v0.2v 2 4.6 v cc =3.3v0.3v 2 4.4 ns from input (oe) to output (a or b) t dis ( t plz /t phz ) v cc =2.5v0.2v 1.1 3.9 v cc =3.3v0.3v 1.0 4.2
U74CBTLV3125 cmos ic unisonic technologies co., ltd 5 of 6 www.unisonic.com.tw qw-r502-959,a ? test circuit and waveforms note: c l includes probe and jig capacitance. t plz and t phz are the same as t dis . t pzl and t pzh are the same as t en . t plh and t phl are the same as t pd . fig. 1 load circuitry for switching times. note: all input pulses are supplied by generators having the following characteristics: t r , t f 2ns; prr 10mhz; zo=50 ? . fig. 2 propagation delay from input(a) to output(b) and output transition time.
U74CBTLV3125 cmos ic unisonic technologies co., ltd 6 of 6 www.unisonic.com.tw qw-r502-959,a 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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