technical data KK74HC273A octal d flip-flop with common clock and reset high-performance silicon-gate cmos ordering information kk 74hc273an plastic kk 74hc273adw soic t a = -55 t o 125 c for all packages the kk 74hc273a is identical in pinout to the ls/als273. the devi ce i nput s are com p at i b l e wi t h st andard c m os out put s; wi t h pul l up resistors, they are com p a tible with ls/alsttl outputs. thi s devi ce consi s t s of ei ght d fl i p -fl ops wi t h com m on c l ock and reset inputs. each flip-flop is loaded with a low-to-high transition of the c l ock i nput . r e set i s asy n chronous and act i v e l o w. ? outputs directly interf ace to cmos, nmos, and ttl ? operat i ng vol t a ge r a nge: 2.0 t o 6.0 v ? low input c u rrent : 1.0 a ? high noise im m unity characteristic of cmos devices function table input s o u t put reset c lock d q l x x l h h h h l l h l x no change h x n o change x = don?t care pin assignment logic diagram pin 20=v cc pin 10 = gnd 1
KK74HC273A maximum ratings * sym b o l p a r a m e t e r valu e un i t v cc dc suppl y vol t a ge (referenced t o gnd) -0.5 t o +7.0 v v in dc input vol t a ge (referenced t o gnd) -1.5 t o v cc +1.5 v v out dc output voltage (referenced to gnd) -0.5 to v cc +0.5 v i in dc input c u rrent , per pi n 20 ma i out dc out put c u rrent , per pi n 35 ma i cc dc suppl y c u rrent , v cc and gnd pins 75 ma p d po wer dissip a tio n in still air, plastic dip+ soic package+ 750 500 mw tst g st orage tem p erat ure -65 t o +150 c t l lead tem p erat ure, 1 m m from c a se for 10 seconds (plastic dip or soic package) 260 c * m a xi m u m r a t i ngs are t hose val u es bey ond whi c h dam a ge t o t h e devi ce m a y occur. functional operation should be restricted to the reco m m e nded operating conditions. +derat i ng - pl ast i c dip: - 10 m w / c from 65 t o 125 c soic package: : - 7 m w / c from 65 t o 125 c recommended operating conditions sy m bol p a r a m e t e r m i n m a x uni t v cc dc suppl y vol t a ge (referenced t o gnd) 2.0 6.0 v v in , v out dc input vol t a ge, out put vol t a ge (referenced t o gnd) 0 v cc v t a operat i ng tem p erat ure, al l package ty pes -55 +125 c t r , t f input r i se and fal l ti m e (fi gure 1) v cc =2.0 v v cc =4.5 v v cc =6.0 v 0 0 0 1000 500 400 ns thi s devi ce cont ai ns prot ect i on ci rcui t r y t o guard agai ns t dam a ge due t o hi gh st at i c vol t a ges or el ect ri c fi el ds. however, precautions m u st be taken to avoid applications of any voltage highe r than m a xim u m rated voltages to this hi gh-i m pedance ci rcui t . for proper operat i on, v in and v out shoul d be const r ai ned t o t h e range gnd (v in or v out ) v cc . unused i nput s m u st al way s be t i e d t o an appropri a t e l ogi c vol t a ge l e vel (e.g., ei t h er gnd or v cc ). unused out put s m u st be l e ft open. 2
KK74HC273A dc electrical characteristics (voltages referenced to gnd) v cc guaranteed lim it sy m bol p a r a m e t e r test c ondi t i o n s v 25 c to -55 c 85 c 12 5 c un it v ih m i ni m u m hi gh- level input vol t a ge v out =0.1 v or v cc -0.1 v ? i out ? 20 a 2.0 4.5 6.0 1.5 3.15 4.2 1.5 3.15 4.2 1.5 3.15 4.2 v v il m a x i mu m l o w - level input vol t a ge v out =0.1 v or v cc -0.1 v ? i out ? 20 a 2.0 4.5 6.0 0.5 1.35 1.8 0.5 1.35 1.8 0.5 1.35 1.8 v v oh m i ni m u m hi gh- level out put vol t a ge v in =v ih or v il ? i out ? 20 a 2.0 4.5 6.0 1.9 4.4 5.9 1.9 4.4 5.9 1.9 4.4 5.9 v v in =v ih or v il ? i out ? 4.0 m a ? i out ? 5.2 m a 4.5 6.0 3.98 5.48 3.84 5.34 3.7 5.2 v ol m a x i mu m l o w - level out put vol t a ge v in = v il or v ih ? i out ? 20 a 2.0 4.5 6.0 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 v v in = v il or v ih ? i out ? 4.0 m a ? i out ? 5.2 m a 4.5 6.0 0.26 0.26 0.33 0.33 0.4 0.4 i in m a xi m u m input leakage current v in =v cc or gnd 6.0 0.1 1.0 1.0 a i cc m a x i mu m q u i e s c e n t suppl y c u rrent (per package) v in =v cc or gnd i out =0 a 6.0 4 . 0 4 0 1 6 0 a 3
KK74HC273A ac electrical characteristics (c l =50pf,input t r =t f =6.0 ns) v cc guaranteed lim it sym b o l p a r a m e t e r v 25 c to -55 c 85 c 125 c unit f ma x m a xi m u m c l ock frequency (50% dut y c y cl e) (fi gures 1 and 4) 2.0 4.5 6.0 6.0 30 35 5.0 24 28 4.0 20 24 mh z t plh , t phl m a xi m u m propagat i on del a y , c l ock t o q (fi gures 1 and 4) 2.0 4.5 6.0 145 29 25 180 36 31 220 44 38 ns t phl m a xi m u m propagat i on del a y , r e set t o q (fi gures 2 and 4) 2.0 4.5 6.0 145 29 25 180 36 31 220 44 38 ns t tlh , t thl m a xi m u m out put transi t i on ti m e , any out put (fi gures 1 and 4) 2.0 4.5 6.0 75 15 13 95 19 16 110 22 19 ns c in m a xi m u m input c a paci t a nce - 10 10 10 pf power dissipation capacitance (per enabled out put ) typical @25 c,v cc =5.0 v c pd used t o det e rm i n e t h e no-l o ad dy nam i c power consum pt i on: p d =c pd v cc 2 f+i cc v cc 4 8 p f timing requirements (c l =50pf,input t r =t f =6.0 ns) v cc guaranteed lim it sym b o l p a r a m e t e r v 25 c to -5 5 c 85 c 125 c un it t su m i n i mu m s e t u p t i me , d a t a t o c l ock (fi gure 3) 2.0 4.5 6.0 60 12 10 75 15 13 90 18 15 ns t h m i n i mu m h o l d t i me , c l o c k to data (fig u r e 3 ) 2.0 4.5 6.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 ns t rec m i n i mu m r e c o v e r y t i me , reset in activ e to clo c k (fi gure 2) 2.0 4.5 6.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 ns t w m i ni m u m pul s e w i dt h, c l ock (fi gure 1) 2.0 4.5 6.0 60 12 10 75 15 13 90 18 15 ns t w m i ni m u m pul s e w i dt h, r e set (fi gure 2) 2.0 4.5 6.0 60 12 10 75 15 13 90 18 15 ns t r, t f m a xi m u m input r i se and fal l ti m e s (fi gure 1) 2.0 4.5 6.0 1000 500 400 1000 500 400 1000 500 400 ns 4
KK74HC273A fi gure 1. sw i t chi n g waveforms fi gure 2. sw i t chi n g waveforms fi gure 3. sw i t chi n g waveforms figure 4. test circuit expanded logic diagram 5
KK74HC273A n s u f f i x p l as t i c d i p (m s - 0 0 1 a d) sy m b o l m i n m a x a 24. 8 9 26. 92 b 6. 1 7 . 1 1 c 5. 33 d 0. 36 0. 56 f 1. 14 1. 78 g h j 0 10 k 2. 92 3. 81 no t e s : l 7. 62 8. 26 1. d i m e n s i o n s ?a ?, ?b ? d o n o t i n cl u d e m o l d f l as h o r p r o t r u s i o n s . m 0. 2 0 . 3 6 m a x i m u m m o l d f l a s h o r p r o t r u s i o n s 0. 25 m m ( 0 . 010) p e r s i d e . n 0. 38 d su f f i x so i c (m s - 0 1 3 a c) sy m b o l m i n m a x a 12. 6 1 3 b 7. 4 7 . 6 c 2. 35 2. 65 d 0. 33 0. 51 f 0. 4 1 . 2 7 g h no t e s : j 0 8 1. d i m e n s i o ns a a n d b d o no t i n c l ud e m o l d f l a s h o r pr o t r u s i on . k 0. 1 0 . 3 2. m a x i m u m m o l d fl a s h o r p r o t ru s i o n 0 . 1 5 m m (0 . 0 0 6 ) p e r s i d e m 0. 23 0. 32 f o r a ; fo r b ? 0. 25 m m ( 0 . 010) p e r s i d e . p 10 10. 65 r 0. 25 0. 75 d i me n s i o n , mm 1. 27 9. 53 d i me n s i o n , mm 2. 54 7. 62 a b h c k c m j f m p g d r x 4 5 se a t i n g pl a n e 0.2 5 ( 0 . 0 1 0 ) m t -t - 1 20 10 11 l h m j a b f g d se a t i n g pl an e n k 0.2 5 ( 0 . 010) m t -t - c 1 20 10 11 6
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