unisonic technologies co., ltd u74ahc1g74 cmos ic www.unisonic.com.tw 1 of 5 copyright ? 2015 unisonic technologies co., ltd qw-r126-027.a single positive-edge-triggered d-type flip-flop with clear and preset ? description the utc u74ahc1g74 is a single positive-edge-triggered d-type flip-flop. a low level at the preset ( pre ) or clear ( clr ) inputs sets or resets the outputs, regardle ss of the levels of the other inputs. when pre and clr are inactive (high), data at the data (d) input meeting the setup time requirements is transferred to the outputs on t he positive-going edge of the clock pulse. clock triggering occurs at a voltage level and is not directly related to the rise time of the clock pulse. following the hold-time interval,data at the d input can be changed without affecting the levels at the outputs. ? features * operation voltage range: 2 ~ 5.5v * max t pd of 7.3 ns at 5 v * low static power consumption; i cc =2 a (max.) * 8ma output drive at 5 v sop-8 ? ordering information ordering number package packing U74AHC1G74G-S08-R sop-8 tape reel ? marking
u74ahc1g74 cmos ic unisonic technologies co., ltd 2 of 5 www.unisonic.com.tw qw-r126-027.a ? pin configuration 4 3 2 1 5 6 7 8 clk d q gnd q pre v cc clr ? function table (each gate) inputs outputs pre clr clk d q q l h x x h l h l x x l h l l x x h (note) h (note) h h h h l h h l l h h h l x q0 q0 note: this configuration is nonstable; that is, it does not persist when pre or clr returns to its inactive (high) level. ? logic diagram (positive logic) tg c c tg c tg c tg c clr pre clk d q q 5 3 2 7 2 6 c c c c c
u74ahc1g74 cmos ic unisonic technologies co., ltd 3 of 5 www.unisonic.com.tw qw-r126-027.a ? absolute maximum rating parameter symbol conditions ratings unit supply voltage v cc -0.5 ~ +7.0 v input voltage v in -0.5 ~ +7.0 v output voltage v out -0.5 ~ v cc +0.5 v continuous v cc or gnd current i cc 50 ma continuous output current i out -0.5vv cc +0.5v (note 2) 20 ma storage temperature range t stg -65 ~ + 150 c notes: 1. 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. 2. the input and output voltage ratings may be exceeded if the input and output curr ent ratings are observed. ? recommended operating conditions parameter symbol test conditions min typ max unit supply voltage v cc operating 2.0 5.0 5.5 v input voltage v in 0 5.5 v output voltage v out high or low state 0 v cc v operating temperature t a -40 +85 c v cc =3.3 0.3v 100 ns/v input transition rise or fall rate ? t/ ? v v cc =5.0 0.5v 20 ns/v ? electrical characteristics (t a =25c , unless otherwise specified) parameter symbol test conditions min typ max unit v cc =2.0v 1.5 v v cc =3.0v 2.1 v high-level input voltage v ih v cc =5.5v 3.85 v v cc =2.0v 0.5 v v cc =3.0v 0.9 v low-level input voltage v il v cc =5.5v 1.65 v v cc =2.0v 1.9 2.0 v v cc =3.0v 2.9 3.0 v high-level output voltage (all outputs) v cc =5.5v v in =v ih or v il , i oh =-50 a 4.4 4.5 v v cc =3.0v, v in =v ih or v il , i oh =-4.0ma 2.58 v high-level output voltage v oh v cc =4.5v, v in =v ih or v il , i oh =-8.0ma 3.94 v v cc =2.0v 0.1 v v cc =3.0v 0.1 v low-level output voltage (all outputs) v cc =5.5v v in =v ih or v il , i oh =50 a 0.1 v v cc =3.0v, v in =v ih or v il , i oh =4.0ma 0.36 v low-level output voltage v ol v cc =4.5v, v in =v ih or v il , i oh =8.0ma 0.36 v 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 =v cc or gnd, i out =0 2 a input capacitance c in v in =v cc or gnd 2 10 pf
u74ahc1g74 cmos ic unisonic technologies co., ltd 4 of 5 www.unisonic.com.tw qw-r126-027.a ? switching characteristics (gnd=0v, t r = t f 3.0ns, t a =25c , unless otherwise specified) parameter symbol test conditions min typ max unit v cc =3.0v ~ 3.6v 80 125 mhz c l =15pf v cc =4.5v ~5.5v 130 170 mhz v cc =3.0v ~ 3.6v 50 75 mhz minimum frequency response f max c l =50pf v cc =4.5v ~5.5v 90 115 mhz v cc =3.0v ~ 3.6v 7.6 12.3 ns c l =15pf v cc =4.5v ~ 5.5v 4.8 7.7 ns v cc =3.0v ~ 3.6v 10.1 15.8 ns propagation delay from input ( pre or clr ) to output (q or q) t plh / t phl c l =50pf v cc =4.5v ~ 5.5v 6.3 9.7 ns v cc =3.0v ~ 3.6v 6.7 11.9 ns c l =15pf v cc =4.5v ~ 5.5v 4.6 7.3 ns v cc =3.0v ~ 3.6v 9.2 15.4 ns propagation delay from input (clk) to output(q or q) t plh / t phl c l =50pf v cc =4.5v ~ 5.5v 6.1 9.3 ns ? timing requirements parameter symbol test conditions min typ max unit v cc =3.0v ~ 3.6v 6 ns pulse duration t w v cc =4.5v ~ 5.5v 5 ns v cc =3.0v ~ 3.6v 6 ns setup time before clk from data to pre or clr inactive t su v cc =4.5v ~ 5.5v 5 ns v cc =3.0v ~ 3.6v 0.5 ns hold time, da ta after clk t h v cc =4.5v ~ 5.5v 0.5 ns ? operating characteristics (t a =25c , unless otherwise specified) parameter symbol test conditions min typ max unit power dissipation capacitance c pd c l =50pf, f=1mhz 32 pf
u74ahc1g74 cmos ic unisonic technologies co., ltd 5 of 5 www.unisonic.com.tw qw-r126-027.a ? test circuit and waveforms from output c l (note) notes: 1. c l includes probe and jig capacitance. 2. all input pulses are supplied by generator s having the following characteristics: prr 1mhz, z o = 50 ? , t r 3ns, t f 3ns. 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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