n overview the DN8643S is an ic which incorporates a 24-bit shift reg- ister and a latch driver to meet high-speed operation, low power consumption and high-density printout of the thermal printers for the work processors, and so on. it employs the bi- cmos process in which the serial-in and serial-out/parallel-out functions are incorporated, the 24-step shift register block and latch block are composed of cmos, and the 24-step parallel driver block is bipolar. n features serial-in and serial-out/parallel-out cascade connection allowed built-in output malfunctioning preventive circuit low current at stanby i cc = 100? high-breakdown, large current drive type output steps breakdown : 30v output current : 120ma surface mountable usonf-36d package (pin pitch : 0.8mm) DN8643S 24-bit shift register latch driver ic 15.2 0.3 11.93 0.3 8.4 0.3 0.5 2.85 0.2 0.2 + 0.1 ?0.05 1.3 0.25 1.3 0.25 0.35 0.25 0.8 36-pin panaflat plastic package (ssop036-p-0450) unit : mm 0.1 0.1 1 18 36 19 20 sout 36 v cc gnd 8, 9, 10 27, 28, 29 14 16 15 1 en 19 stb 18 clk 17 sin d cp q l q d d cp q l q d d cp q ld 21 q 1 d cp q ld q 22 d cp q ld q q output malfunction protector q 2 q 3 q 23 q 24 n block diagram
v c c v o i o p d t o p r t s t g s u p p l y v o l t a g e o u t p u t v o l t a g e o u t p u t c u r r e n t p o w e r d i s s i p a t i o n o p e r a t i n g a m b i e n t t e m p e r a t u r e s t o r a g e t e m p e r a t u r e v v m a w ? c ? c 0 t o 7 0 t o 3 0 1 2 0 1 . 3 * 2 0 t o + 7 5 5 5 t o + 1 2 5 * w h e n m o u n t i n g o n t o t h e p c b , p o w e r d i s s i p a t i o n i s r e d u c e d a t a r a t e o f 1 0 . 4 m w / ? c f r o m t a = 2 5 ? c p a r a m e t e r s y m b o l r a t i n g u n i t n a b s o l u t e m a x i m u m r a t i n g s ( t a = 2 5 ? c ) p a r a m e t e r s y m b o l c o n d i t i o n m i m t y p m a x n r e c o m m e n d e d o p e r a t i n g r a n g e ( t a = 2 5 ? c ) s u p p l y v o l t a g e v c c 6 v 5 o u t p u t v o l t a g e v o v o u t p u t c u r r e n t * i o 1 0 0 m a 3 0 4 c l o c k f r e q u e n c y f c l k 1 0 m h z i n p u t d u t y 4 0 t o 6 0 % i n p u t p u l s e w i d t h t w n s 4 0 n s 4 0 s e t u p t i m e t s u n s 3 0 n s 4 0 h o l d t i m e t h n s 2 0 c l k s t b s i n s t b s i n s t b n s 0 c l o c k p u l s e r i s e t i m e t r 5 0 0 n s c l o c k p u l s e f a l l t i m e t f 5 0 0 n s u n i t * a n a l l o w a b l e v a l u e c h a n g e s d e p e n d s o n t h e n u m b e r o f s i m u l t a n e o u s l y t u r n e d - o n c i r c u i t s a n d t h e d u t y . u s e w i t h p o w e r d i s s i p a t i o n t a k e n i n t o f u l l a c c o u n t . i n p u t v o l t a g e 0 . 7 v c c v i h v c c v v c c = 4 t o 6 v 0 v i l 0 . 3 v c c v i n p u t c u r r e n t i i h 2 5 a v i h = 5 v i i l 2 5 a v i l = 0 v i o l = 1 0 0 m a i o l = 8 0 m a v o = 3 0 v ( o u t p u t o f f ) o u t p u t s a t u r a t i o n v o l t a g e v c e ( s a t ) 1 0 . 4 v v c e ( s a t ) 2 0 . 3 5 v o u t p u t l e a k a g e c u r r e n t i o l k 1 5 0 a * o u t p u t m a l f u n c t i o n i n g p r e v e n t i v e c i r c u i t o p e r a t i n g v o l t a g e t i m i n g c h a r t i o l k 2 a v o = 1 5 v ( o u t p u t o f f ) s u p p l y c u r r e n t i c c 1 1 0 0 a t o t a l d r i v e r o u t p u t o f f 2 5 i c c 2 5 m a d r i v e r o u t p u t 1 c i r c u i t o n o u t p u t v o l t a g e v o h v i o = 1 a v o l 0 . 1 v i o = 1 a 4 . 9 o u t p u t c u r r e n t i o h m a v o h = 4 . 5 v i o l m a v o l = 0 . 4 v 4 4 o u t p u t m a l f u n c t i o n i n g p r e v e n t i v e c i r c u i t o p e r a t i n g v o l t a g e * 2 . 9 v c c t + 3 . 9 v 2 . 6 v c c t 3 . 6 v o f f d r i v e r o u t p u t v c c t + v c c t v c c e n a b l e e n a b l e p a r a m e t e r s y m b o l c o n d i t i o n m i n t y p m a x u n i t n e l e c t r i c a l c h a r a c t e r i s t i c s ( t a = 2 5 ? c )
p a r a m e t e r s y m b o l c o n d i t i o n m i n t y p m a x u n i t n s w i t c h i n g c h a r a c t e r i s t i c s ( t a = 2 5 ? c ) m a x i m u m c l o c k f r e q u e n c y 1 0 f m a x m h z p r o p a g a t i o n d e l a y t i m e t p l h 1 0 0 n s t p h l 1 0 0 n s t p l h 2 s v c c = 5 v r l = 1 0 0 c l = 1 5 p f v c c = 5 v c l = 1 5 p f i n p u t c l k c l k c l k o u t p u t s o u t t p h l 0 . 5 s t p l h 2 s t p h l 0 . 5 s q n e n q n n t i m i n g c h a r t 1 . i n p u t t i m i n g 2 . p r o p a g a t i o n d e l a y t i m e c l k c l k s o u t e n q 1 t o q 2 4 s i n a . b . c 2 . 5 v 2 . 5 v 2 . 5 v 2 . 5 v 2 . 5 v 2 . 5 v 2 . 5 v 2 . 5 v 2 . 5 v 2 . 5 v 2 . 5 v 2 . 5 v 2 . 5 v 2 . 5 v 2 . 5 v 2 . 5 v 2 . 5 v 2 . 5 v 2 . 5 v 1 0 % 1 0 % 9 0 % 1 / f c l k t w h ( c l k ) t h ( c l k ) t h ( s i n ) t f ( c l k ) t s u ( s i n ) t h ( s i n ) t s u ( s i n ) t s u ( s t b ) t w ( s t b ) t p l h t p l h t p l h t p h l t p h l t p h l t h ( s t b ) t w l ( c l k ) 9 0 % s t b
i n p u t n f u n c t i o n s t a b l e d r i v e r o u t p u t s o u t c l k - - - - e n h h l l l l s t b l h h h s i n l h q l h h n c h l n c q n h h n c q n 1 q n 1 n c q ' 2 3 n c q ' 2 3 q ' 2 3 q ' 2 3 n c n o t e ) h = h i g h l e v e l , l = l o w l e v e l , = e i t h e r h o r l w i l l d o , - = t r a n s i t i o n f r o m h o r l , = t r a n s i t i o n f r o m h t o l , n c = n o c h a n g e , q ' 2 3 = s t a t u s o f t h e 2 3 r d s h i f t r e g i s t e r e n q 1 2 q 1 1 q 1 0 q 9 q 8 q 7 g n d g n d g n d q 6 q 5 q 4 q 3 q 2 q 1 s i n c l k v c c q 1 3 q 1 4 q 1 5 q 1 6 q 1 7 q 1 8 g n d g n d g n d q 1 9 q 2 0 q 2 1 q 2 2 q 2 3 q 2 4 s o u t s t b 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 3 6 3 5 3 4 3 3 3 2 3 1 3 0 2 9 2 8 2 7 2 6 2 5 2 4 2 3 2 2 2 1 2 0 1 9 d n 8 6 4 3 s ( t o p v i e w ) n pin assignments
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