technical data kk74ls14 hex schmitt-trigger inverter ordering information kk 74ls14n plastic kk 74ls14d soic t a = 0 to 7 0 c for all packages this device contains si x independent gates each of which perform s the l ogi c inver t funct i on. each i nput has hy st eresi s whi c h i n creases t h e noi se i m m uni t y and t r ansform s a sl owl y changi ng i nput si gnal t o a fast ch an g i n g , j itter free o u t p u t . logic diagram pin 14 =v cc pin 7 = gnd pin assignment function table input s o u t put a y l h h l 1
kk74ls14 maximum ratings * s y m b o l p a r a m e t e r v a l u e u n i t v cc suppl y vol t a ge 7.0 v v in input vol t a ge 7.0 v v out out put vol t a ge 5.5 v tst g st orage tem p erat ure r a nge -65 t o +150 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. recommended operating conditions s y m b o l p a r a m e t e r m i n m a x unit v cc suppl y vol t a ge 4.75 5.25 v i oh hi gh level out put c u rrent -15 m a i ol low level out put c u rrent 24 m a t a am bi ent tem p erat ure r a nge 0 +70 c dc electrical characteristics over full operating conditions g u a r a n t e e d l i m i t s y m b o l p a r a m e t e r t e s t c o n d i t i o n s m i n m a x unit v t+ - positive-going input threshold vo ltag e v cc = 5 v 0.5 1 v v t- - negat i v e-goi ng input threshol d vo ltag e v cc = 5 v 1.4 1.9 v v t+ - v t- h y s t e r e s i s v cc = 5 v 0.4 v v ik input c l am p vol t a ge v cc = m i n, i in = -18 m a -1.5 v v oh hi gh level out put vol t a ge v cc = m i n, i oh = -0.4 m a , v i =0.5 v 2 . 7 v v ol low level out put vol t a ge v cc = m i n, i ol = 4 m a v i =1.9 v 0 . 4 v v cc = m i n, i ol = 8 m a v i =1.9 v 0 . 5 i ih hi gh level input c u rrent v cc = m a x, v in = 2.7 v 20 a v cc = m a x, v in = 7.0 v 0.1 m a i il low level input c u rrent v cc = m a x, v in = 0.4 v -0.4 m a i o out put short c i rcui t c u rrent v cc = m a x, v o =0 v (not e 1) - 2 0 - 1 0 0 m a i cc suppl y c u rrent tot a l wi t h out put s hi gh v cc = m a x 16 m a to t a l with out put s l o w 2 1 note 1: not m o re than one output s hould be shorted at a tim e, and the duration should not exceed one second. 2
kk74ls14 ac electrical characteristics (t a = 25 c, v cc = 5.0 v, c l = 15 pf, r l = 2 k ? , t r = 15 ns, t f = 6.0 ns) s y m b o l p a r a m e t e r m i n m a x u n i t t plh propagat i on del a y , input a t o out put y 22 ns t phl propagat i on del a y , input a t o out put y 22 ns fi gure 1. sw i t chi n g waveforms notes a. c l i n cl udes probe and ji g capaci t a nce. b . al l di odes are 1n916 or 1n3064. figure 2. test circuit 3
kk74ls14 n s u f f i x p l as t i c di p (m s - 0 0 1 a a ) sy m b o l m i n m a x a 18. 67 19. 69 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 2 a b ) sy m b o l m i n m a x a 8. 55 8. 75 b 3. 8 4 c 1. 35 1. 75 d 0. 33 0. 51 f 0. 4 1 . 2 7 g h j 0 8 no t e s : k 0. 1 0 . 2 5 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 p r ot r u s i on . m 0. 19 0. 25 2. 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 0. 15 m m ( 0 . 006) p e r s i d e p 5. 8 6 . 2 fo r a ; fo r b ? 0. 25 m m ( 0 . 010) p e r s i d e . r 0. 25 0. 5 d i me n s i o n , mm 1. 27 5. 27 2. 54 7. 62 d i me n s i o n , mm a b h c k c m j f m p g d r x 4 5 se a t i n g pl an e 0.2 5 ( 0 . 0 10 ) m t -t - 1 14 7 8 a b f g d l h se a t i n g pl a n e n k 0.25 ( 0 . 010) m t m j -t - c 1 14 7 8 4
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