unisonic technologies co., ltd U74HC165 cmos ic www.unisonic.com.tw 1 of 7 copyright ? 2013 unisonic technologies co., ltd qw-r502-a44.b 8-bit parallel-load shift register ? description the U74HC165 is an 8-bit parallel-load shift register that, when clocked, shifts the data toward a serial (q h ) output. parallel-in access to each stage is provided by eight individual direct data (a-h) inputs that are enabled by a low level at shift/load (sh/ ld ) input. the U74HC165 also features a clock-inhibit (clk inh) function and a complementary serial ( h q) output. clocking is accomplished by a low-to-high transition of the clock (clk) input while sh/ ld is held high and clk inh is held low. the functions of clk and clk inh are interchangeable. since a low clk and a low-to-high transition of clk inh also accomplish clocking, clk inh should be changed to the high level only while clk is high. parallel loading is inhibited when sh/ ld is held high. while sh/ ld is low, the parallel inputs to the register are enabled independently of the levels of the clk, clk inh, or serial (ser) inputs. ? features * complementary outputs * direct overriding load (data) inputs * gated clock inputs * parallel-to-serial data conversion sop-16 tssop-16 ? ordering information ordering number package packing lead free halogen free U74HC165l-s16-t U74HC165g-s16-t sop-16 tube U74HC165l-s16-r U74HC165g-s16-r sop-16 tape reel U74HC165l-p16-t U74HC165g-p16-t tssop-16 tube U74HC165l-p16-r U74HC165g-p16-r tssop-16 tape reel
U74HC165 cmos ic unisonic technologies co., ltd 2 of 7 www.unisonic.com.tw qw-r502-a44.b ? pin configuration ? function table inputs function sh/ ld clk clk inh l x x parallel load h h x no change h x h no change h l shift h l shift shift=content of each internal register shifts toward serial output q h . data at ser is shifted into the first register. ? logic symbol
U74HC165 cmos ic unisonic technologies co., ltd 3 of 7 www.unisonic.com.tw qw-r502-a44.b ? logic diagram (positive logic) ? typical shift, load, and inhibit sequence
U74HC165 cmos ic unisonic technologies co., ltd 4 of 7 www.unisonic.com.tw qw-r502-a44.b ? absolute maximum rating parameter symbol ratings unit supply voltage v cc -0.5 ~ 7 v v cc or gnd current i cc 50 ma output current i out 25 ma input clamp current i ik 20 ma output clamp current i ok 20 ma 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 resistances parameter symbol ratings unit junction to ambient sop-16 ja 73 c/w tssop-16 110 ? recommended operating conditions parameter symbol test conditions min typ max unit supply voltage v cc 2 5 6 v high-level input voltage v ih v cc =2v 1.5 v v cc =4.5v 3.15 v cc =6v 4.2 low-level input voltage v il v cc =2v 0.5 v v cc =4.5v 1.35 v cc =6v 1.8 input voltage v in 0 v cc v output voltage v out 0 v cc v input transition (rise and fall) time t t v cc =2v 1000 ns v cc =4.5v 500 v cc =6v 400 operating free-air temperature t a -40 +85 c ? electrical characteristics (t a =25c , unless otherwise specified) parameter symbol test conditions min typ max unit output voltage high-level v oh v cc =2v, i oh =-20 a 1.9 1.998 v v cc =4.5v, i oh =-20 a 4.4 4.499 v cc =6v, i oh =-20 a 5.9 5.999 v cc =4.5v, i oh =-4ma 3.98 4.3 v cc =6v, i oh =-5.2ma 5.48 5.8 output voltage low-level v ol v cc =2v, i ol =20 a 0.002 0.1 v v cc =4.5v, i ol =20 a 0.001 0.1 v cc =6v, i ol =20 a 0.001 0.1 v cc =4.5v, i ol =4ma 0.17 0.26 v cc =6v, i ol =5.2ma 0.15 0.26 input leakage current i i ( leak ) v cc =6v, v in = v cc or gnd 0.1 100 na quiescent supply current i cc v cc =6v, v in =v cc or gnd, i out =0 8 a input capacitance c i v cc =2v to 6v 3 10 pf ? timing requirements (t a =25c , unless otherwise specified) parameter symbol test conditions min typ max unit clock frequency f clock v cc =2v 0 6 mhz v cc =4.5v 0 31 v cc =6v 0 36
U74HC165 cmos ic unisonic technologies co., ltd 5 of 7 www.unisonic.com.tw qw-r502-a44.b ? timing requirements(cont.) parameter symbol test conditions min typ max unit pulse duration sh/ ld low t w v cc =2v 80 ns v cc =4.5v 16 v cc =6v 14 clk high or low v cc =2v 80 v cc =4.5v 16 v cc =6v 14 setup time sh/ ld high before clk t su v cc =2v 80 ns v cc =4.5v 16 v cc =6v 14 ser before clk v cc =2v 40 v cc =4.5v 8 v cc =6v 7 clk inh low before clk v cc =2v 100 v cc =4.5v 20 v cc =6v 17 clk inh high before clk v cc =2v 40 v cc =4.5v 8 v cc =6v 7 data before sh/ ld v cc =2v 100 v cc =4.5v 20 v cc =6v 17 hold time ser data after clk t h v cc =2v 5 ns v cc =4.5v 5 v cc =6v 5 par data after sh/ ld v cc =2v 5 v cc =4.5v 5 v cc =6v 5 ? switching characteristics (t r = t f = 6ns, c l =50pf, t a =25c, unless otherwise specified) parameter symbol v cc min typ max unit minimum frequency response f max v cc =2v 6 13 ns v cc =4.5v 31 50 v cc =6v 36 62 propagation delay from input (sh/ ld ) to output(qh or h q) t pd v cc =2v 80 150 ns v cc =4.5v 20 30 v cc =6v 16 26 propagation delay from input (clk) to output(qh or h q) v cc =2v 75 150 v cc =4.5v 15 30 v cc =6v 13 26 propagation delay from input (h) to output(qh or h q) v cc =2v 75 150 v cc =4.5v 15 30 v cc =6v 13 26 to output(any) t t v cc =2v 38 75 ns v cc =4.5v 8 15 v cc =6v 6 13 ? operating characteristics (t a =25c , unless otherwise specified) parameter symbol test conditions min typ max unit power dissipation capacitance c pd no load 75 pf
U74HC165 cmos ic unisonic technologies co., ltd 6 of 7 www.unisonic.com.tw qw-r502-a44.b ? test circuit and waveforms
U74HC165 cmos ic unisonic technologies co., ltd 7 of 7 www.unisonic.com.tw qw-r502-a44.b ? test circuit and waveforms(cont.) 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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