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83948ayi-147 www.icst.com/products/hiperclocks.html rev. b november 21, 2005 1 integrated circuit systems, inc. ics83948i-147 l ow s kew , 1- to -12 d ifferential - to -lvcmos/lvttl f anout b uffer g eneral d escription the ics83948i-147 is a low skew, 1-to-12 differential-to-lvcmos/lvttl fanout buffer and a member of the hiperclocks? family of high performance clock solutions from ics. the ics83948i-147 has two selectable clock inputs. the clk, nclk pair can accept most standard differential input levels. the lvcmos_clk can accept lvcmos or lvttl input levels. the low impedance lvcmos/lvttl out- puts are designed to drive 50 series or parallel terminated transmission lines. the effective fanout can be increased from 12 to 24 by utilizing the ability of the outputs to drive two series terminated lines. the ics83948i-147 is characterized at full 3.3v or full 2.5v operating supply modes. guaranteed output and part-to-part skew characteristics make the ics83948i-147 ideal for those clock distribution applications demanding well defined per- formance and repeatability. b lock d iagram p in a ssignment f eatures ? twelve lvcmos/lvttl outputs ? selectable lvcmos/lvttl clock or differential clk, nclk inputs ? clk, nclk pair can accept the following differential input levels: lvpecl, lvds, lvhstl, hcsl, sstl ? lvcmos_clk accepts the following input levels: lvcmos or lvttl ? output frequency: 350mhz (maximum) ? output skew (at 3.3v 5%): 100ps (maximum) ? part-to-part skew (at 3.3v 5%): 1ns (maximum) ? full 3.3v or full 2.5v operating supply ? -40c to 85c ambient operating temperature ? available in both standard and lead-free rohs-compliant packages hiperclocks? ic s 32-lead lqfp 7mm x 7mm x 1.4mm package body y package top view 32 31 30 29 28 27 26 25 9 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8 24 23 22 21 20 19 18 17 gnd q4 v ddo q5 gnd q6 v ddo q7 clk_sel lvcmos_clk clk nclk clk_en oe v dd gnd gnd q8 v ddo q9 gnd q10 v ddo q11 q3 v ddo q2 gnd q1 v ddo q0 gnd ics83948i-147 q0 q1 q2 q3 q4 q5 q6 q7 q8 q9 q10 q11 lvcmos_clk clk nclk 1 0 clk_en clk_sel d q le oe
83948ayi-147 www.icst.com/products/hiperclocks.html rev. b november 21, 2005 2 integrated circuit systems, inc. ics83948i-147 l ow s kew , 1- to -12 d ifferential - to -lvcmos/lvttl f anout b uffer t able 1. p in d escriptions t able 2. p in c haracteristics t able 3a. c lock s elect f unction t able t able 3b. c lock i nput f unction t able t u p n i l o r t n o ck c o l c 0d e t c e l e s s t u p n i k l c n , k l c 1d e t c e l e s t u p n i k l c _ s o m c v l s t u p n is t u p t u o e d o m t u p t u o o t t u p n iy t i r a l o p l e s _ k l ck l c _ s o m c v lk l ck l c n1 1 q : 0 q 0? 0 1 w o ld e d n e e l g n i s o t l a i t n e r e f f i dg n i t r e v n i n o n 0? 1 0 h g i hd e d n e e l g n i s o t l a i t n e r e f f i dg n i t r e v n i n o n 0? 0 1 e t o n ; d e s a i bw o ld e d n e e l g n i s o t d e d n e e l g n i sg n i t r e v n i n o n 0? 1 1 e t o n ; d e s a i bh g i hd e d n e e l g n i s o t d e d n e e l g n i sg n i t r e v n i n o n 0? 1 e t o n ; d e s a i b0h g i hd e d n e e l g n i s o t d e d n e e l g n i sg n i t r e v n i 0? 1 e t o n ; d e s a i b1w o ld e d n e e l g n i s o t d e d n e e l g n i sg n i t r e v n i 10 ? ? w o ld e d n e e l g n i s o t d e d n e e l g n i sg n i t r e v n i n o n 11 ? ? h g i hd e d n e e l g n i s o t d e d n e e l g n i sg n i t r e v n i n o n . " s l e v e l d e d n e e l g n i s t p e c c a o t t u p n i l a i t n e r e f f i d e h t g n i r i w " , n o i t c e s n o i t a m r o f n i n o i t a c i l p p a e h t o t r e f e r e s a e l p : 1 e t o n l o b m y sr e t e m a r a ps n o i t i d n o c t s e tm u m i n i ml a c i p y tm u m i x a ms t i n u c n i e c n a t i c a p a c t u p n i 4f p c d p e c n a t i c a p a c n o i t a p i s s i d r e w o p ) t u p t u o r e p ( 2 1f p r p u l l u p r o t s i s e r p u l l u p t u p n i 1 5k r n w o d l l u p r o t s i s e r n w o d l l u p t u p n i 1 5k r t u o e c n a d e p m i t u p t u o572 1 r e b m u ne m a ne p y tn o i t p i r c s e d 1l e s _ k l ct u p n ip u l l u p . h g i h n e h w t u p n i k l c _ s o m c v l s t c e l e s . t u p n i t c e l e s k c o l c . w o l n e h w s t u p n i k l c n , k l c s t c e l e s s l e v e l e c a f r e t n i l t t v l / s o m c v l 2k l c _ s o m c v lt u p n ip u l l u p. s l e v e l e c a f r e t n i l t t v l / s o m c v l . t u p n i k c o l c 3k l ct u p n ip u l l u p. t u p n i k c o l c l a i t n e r e f f i d g n i t r e v n i - n o n 4k l c nt u p n in w o d l l u p. t u p n i k c o l c l a i t n e r e f f i d g n i t r e v n i 5n e _ k l ct u p n ip u l l u p. s l e v e l e c a f r e t n i l t t v l / s o m c v l . e l b a n e k c o l c 6e ot u p n ip u l l u p. s l e v e l e c a f r e t n i l t t v l / s o m c v l . e l b a n e t u p t u o 7v d d r e w o p. n i p y l p p u s r e w o p , 6 1 , 2 1 , 8 2 3 , 8 2 , 4 2 , 0 2 d n gr e w o p. d n u o r g y l p p u s r e w o p , 5 1 , 3 1 , 1 1 , 9 3 2 , 1 2 , 9 1 , 7 1 1 3 , 9 2 , 7 2 , 5 2 , 8 q , 9 q , 0 1 q , 1 1 q , 4 q , 5 q , 6 q , 7 q 0 q , 1 q , 2 q , 3 q t u p t u o. s l e v e l e c a f r e t n i l t t v l / s o m c v l . s t u p t u o k c o l c , 8 1 , 4 1 , 0 1 0 3 , 6 2 , 2 2 v o d d r e w o p. s n i p y l p p u s t u p t u o : e t o n p u l l u p d n a n w o d l l u p . s e u l a v l a c i p y t r o f , s c i t s i r e t c a r a h c n i p , 2 e l b a t e e s . s r o t s i s e r t u p n i l a n r e t n i o t r e f e r
83948ayi-147 www.icst.com/products/hiperclocks.html rev. b november 21, 2005 3 integrated circuit systems, inc. ics83948i-147 l ow s kew , 1- to -12 d ifferential - to -lvcmos/lvttl f anout b uffer t able 4a. p ower s upply dc c haracteristics , v dd = v ddo = 3.3v5%, t a = -40 to 85 t able 4c. dc c haracteristics , v dd = v ddo = 3.3v5%, t a = -40 to 85 l o b m y sr e t e m a r a ps n o i t i d n o c t s e tm u m i n i ml a c i p y tm u m i x a ms t i n u v h i e g a t l o v h g i h t u p n is o m c v l2v d d 3 . 0 +v v l i e g a t l o v w o l t u p n is o m c v l3 . 0 -8 . 0v i n i t n e r r u c t u p n iv n i v = d d v r o n i d n g =0 0 3a v h o 1 e t o n ; e g a t l o v h g i h t u p t u oi h o a m 4 2 - =4 . 2v v l o 1 e t o n ; e g a t l o v w o l t u p t u o i l o a m 4 2 =5 5 . 0v i l o a m 2 1 =0 3 . 0v v p p e g a t l o v t u p n i k a e p - o t - k a e pk l c n , k l c5 1 . 03 . 1v v r m c ; e g a t l o v e d o m n o m m o c t u p n i 3 , 2 e t o n k l c n , k l c5 . 0 + d n gv d d 5 8 . 0 -v 0 5 g n i v i r d f o e l b a p a c s t u p t u o : 1 e t o n 0 5 h t i w d e t a n i m r e t s e n i l n o i s s i m s n a r t v o t o d d . 2 / . " t i u c r i c t s e t c a d a o l t u p t u o v 3 . 3 " , n o i t c e s t n e m e r u s a e m r e t e m a r a p e e s s i k l c n , k l c r o f e g a t l o v t u p n i m u m i x a m e h t , s n o i t a c i l p p a d e d n e e l g n i s r o f : 2 e t o n v d d . v 3 . 0 + s a d e n i f e d s i e g a t l o v e d o m n o m m o c : 3 e t o nv h i . a bsolute m aximum r atings supply voltage, v dd 4.6v inputs, v i -0.5v to v dd + 0.5 v outputs, v o -0.5v to v ddo + 0.5v package thermal impedance, ja 47.9c/w (0 lfpm) storage temperature, t stg -65c to 150c note: stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. these ratings are stress specifications only. functional operation of product at these conditions or any conditions be- yond those listed in the dc characteristics or ac character- istics is not implied. exposure to absolute maximum rating conditions for extended periods may affect product reliability. t able 4b. p ower s upply dc c haracteristics , v dd = v ddo = 2.5v5%, t a = -40 to 85 l o b m y sr e t e m a r a ps n o i t i d n o c t s e tm u m i n i ml a c i p y tm u m i x a ms t i n u v d d e g a t l o v y l p p u s r e w o p 5 3 1 . 33 . 35 6 4 . 3v v o d d e g a t l o v y l p p u s t u p t u o5 3 1 . 33 . 35 6 4 . 3v i d d t n e r r u c y l p p u s r e w o p 5 5a m l o b m y sr e t e m a r a ps n o i t i d n o c t s e tm u m i n i ml a c i p y tm u m i x a ms t i n u v d d e g a t l o v y l p p u s r e w o p5 7 3 . 25 . 25 2 6 . 2v v o d d e g a t l o v y l p p u s t u p t u o5 7 3 . 25 . 25 2 6 . 2v i d d t n e r r u c y l p p u s r e w o p 2 5a m
83948ayi-147 www.icst.com/products/hiperclocks.html rev. b november 21, 2005 4 integrated circuit systems, inc. ics83948i-147 l ow s kew , 1- to -12 d ifferential - to -lvcmos/lvttl f anout b uffer t able 5a. ac c haracteristics , v dd = v ddo = 3.3v5%, t a = -40 to 85 l o b m y sr e t e m a r a ps n o i t i d n o c t s e tm u m i n i ml a c i p y tm u m i x a ms t i n u f x a m y c n e u q e r f t u p t u o 0 5 3z h m t d p n o i t a g a p o r p ; y a l e d ; k l c n , k l c 1 e t o n ? z h m 0 5 324s n ; k l c _ s o m c v l 2 e t o n ? z h m 0 5 324s n t ) o ( k s7 , 3 e t o n ; w e k s t u p t u o n o d e r u s a e m v @ e g d e g n i s i r o d d 2 / 0 0 1s p t ) p p ( k s7 , 4 e t o n ; w e k s t r a p - o t - t r a p n o d e r u s a e m v @ e g d e g n i s i r o d d 2 / 1s n t r t / f e m i t l l a f / e s i r t u p t u ov 2 o t v 8 . 02 . 00 . 1s n c d oe l c y c y t u d t u p t u o? k l c n , k l c = f e r , z h m 0 5 15 40 55 5% t l z p t , h z p 5 e t o n ; e m i t e l b a n e t u p t u o 5s n t z l p t , z h p 5 e t o n ; e m i t e l b a s i d t u p t u o 5s n t s e l b a n e k c o l c ; e m i t p u t e s 6 e t o n o t n e _ k l c k l c n , k l c 1s n o t n e _ k l c k l c _ s o m c v l 0s n t h e l b a n e k c o l c ; e m i t d l o h 6 e t o n o t k l c n , k l c n e _ k l c 0s n k l c _ s o m c v l n e _ k l c o t 1s n o t t n i o p g n i s s o r c t u p n i l a i t n e r e f f i d e h t m o r f d e r u s a e m : 1 e t o nv o d d 2 /. t u p t u o e h t f o v m o r f d e r u s a e m : 2 e t o n d d v o t t u p n i e h t f o 2 / o d d . t u p t u o e h t f o 2 / . s n o i t i d n o c d a o l l a u q e h t i w d n a e g a t l o v y l p p u s e m a s e h t t a s t u p t u o n e e w t e b w e k s s a d e n i f e d : 3 e t o n v t a d e r u s a e m o d d . 2 / h t i w d n a s e g a t l o v y l p p u s e m a s e h t t a g n i t a r e p o s e c i v e d t n e r e f f i d n o s t u p t u o n e e w t e b w e k s s a d e n i f e d : 4 e t o n v t a d e r u s a e m e r a s t u p t u o e h t , e c i v e d h c a e n o s t u p n i f o e p y t e m a s e h t g n i s u . s n o i t i d n o c d a o l l a u q e o d d . 2 / . n o i t c u d o r p n i d e t s e t t o n . n o i t a z i r e t c a r a h c y b d e e t n a r a u g e r a s r e t e m a r a p e s e h t : 5 e t o n . k c o l c t u p n i e h t f o e g d e g n i s i r e h t o t e v i t a l e r e r a s e m i t d l o h d n a p u t e s : 6 e t o n . 5 6 d r a d n a t s c e d e j h t i w e c n a d r o c c a n i d e n i f e d s i r e t e m a r a p s i h t : 7 e t o n t able 4d. dc c haracteristics , v dd = v ddo = 2.5v5%, t a = -40 to 85 l o b m y sr e t e m a r a ps n o i t i d n o c t s e tm u m i n i ml a c i p y tm u m i x a ms t i n u v h i e g a t l o v h g i h t u p n is o m c v l7 . 1v d d 3 . 0 +v v l i e g a t l o v w o l t u p n is o m c v l3 . 0 -7 . 0v i n i t n e r r u c t u p n iv n i v = d d v r o n i d n g =0 0 3a v h o 1 e t o n ; e g a t l o v h g i h t u p t u oi h o a m 5 1 - =8 . 1v v l o 1 e t o n ; e g a t l o v w o l t u p t u oi l o a m 5 1 =6 . 0v v p p e g a t l o v t u p n i k a e p - o t - k a e pk l c n , k l c5 1 . 03 . 1v v r m c ; e g a t l o v e d o m n o m m o c t u p n i 3 , 2 e t o n k l c n , k l c5 . 0 + d n gv d d 5 8 . 0 -v 0 5 g n i v i r d f o e l b a p a c s t u p t u o : 1 e t o n 0 5 h t i w d e t a n i m r e t s e n i l n o i s s i m s n a r t v o t o d d . 2 / . " t i u c r i c t s e t c a d a o l t u p t u o v 5 . 2 " , n o i t c e s t n e m e r u s a e m r e t e m a r a p e e s s i k l c n , k l c r o f e g a t l o v t u p n i m u m i x a m e h t , s n o i t a c i l p p a d e d n e e l g n i s r o f : 2 e t o n v d d . v 3 . 0 + s a d e n i f e d s i e g a t l o v e d o m n o m m o c : 3 e t o nv h i .
83948ayi-147 www.icst.com/products/hiperclocks.html rev. b november 21, 2005 5 integrated circuit systems, inc. ics83948i-147 l ow s kew , 1- to -12 d ifferential - to -lvcmos/lvttl f anout b uffer t able 5b. ac c haracteristics , v dd = v ddo = 2.5v5%, t a = -40 to 85 l o b m y sr e t e m a r a ps n o i t i d n o c t s e tm u m i n i ml a c i p y tm u m i x a ms t i n u f x a m y c n e u q e r f t u p t u o 0 5 3z h m t d p n o i t a g a p o r p ; y a l e d ; k l c n , k l c 1 e t o n f z h m 0 5 35 . 12 . 4s n ; k l c _ s o m c v l 2 e t o n f z h m 0 5 37 . 14 . 4s n t ) o ( k s7 , 3 e t o n ; w e k s t u p t u o n o d e r u s a e m v @ e g d e g n i s i r o d d 2 / 0 6 1s p t ) p p ( k s7 , 4 e t o n ; w e k s t r a p - o t - t r a p n o d e r u s a e m v @ e g d e g n i s i r o d d 2 / 2s n t r t / f e m i t l l a f / e s i r t u p t u ov 8 . 1 o t v 6 . 01 . 00 . 1s n c d oe l c y c y t u d t u p t u o? k l c n , k l c = f e r , z h m 0 5 10 40 6% t l z p t , h z p 5 e t o n ; e m i t e l b a n e t u p t u o 5s n t z l p t , z h p 5 e t o n ; e m i t e l b a s i d t u p t u o 5s n t s e l b a n e k c o l c ; e m i t p u t e s 6 e t o n o t n e _ k l c k l c n , k l c 1s n o t n e _ k l c k l c _ s o m c v l 0s n t h e l b a n e k c o l c ; e m i t d l o h 6 e t o n o t k l c n , k l c n e _ k l c 0s n k l c _ s o m c v l n e _ k l c o t 1s n o t t n i o p g n i s s o r c t u p n i l a i t n e r e f f i d e h t m o r f d e r u s a e m : 1 e t o nv o d d 2 /. t u p t u o e h t f o v m o r f d e r u s a e m : 2 e t o n d d v o t t u p n i e h t f o 2 / o d d . t u p t u o e h t f o 2 / . s n o i t i d n o c d a o l l a u q e h t i w d n a e g a t l o v y l p p u s e m a s e h t t a s t u p t u o n e e w t e b w e k s s a d e n i f e d : 3 e t o n v t a d e r u s a e m o d d . 2 / h t i w d n a s e g a t l o v y l p p u s e m a s e h t t a g n i t a r e p o s e c i v e d t n e r e f f i d n o s t u p t u o n e e w t e b w e k s s a d e n i f e d : 4 e t o n v t a d e r u s a e m e r a s t u p t u o e h t , e c i v e d h c a e n o s t u p n i f o e p y t e m a s e h t g n i s u . s n o i t i d n o c d a o l l a u q e o d d . 2 / . n o i t c u d o r p n i d e t s e t t o n . n o i t a z i r e t c a r a h c y b d e e t n a r a u g e r a s r e t e m a r a p e s e h t : 5 e t o n . k c o l c t u p n i e h t f o e g d e g n i s i r e h t o t e v i t a l e r e r a s e m i t d l o h d n a p u t e s : 6 e t o n . 5 6 d r a d n a t s c e d e j h t i w e c n a d r o c c a n i d e n i f e d s i r e t e m a r a p s i h t : 7 e t o n
83948ayi-147 www.icst.com/products/hiperclocks.html rev. b november 21, 2005 6 integrated circuit systems, inc. ics83948i-147 l ow s kew , 1- to -12 d ifferential - to -lvcmos/lvttl f anout b uffer p arameter m easurement i nformation 2.5v o utput l oad ac t est c ircuit 3.3v o utput l oad ac t est c ircuit scope qx lvcmos 1.65v 5% -1.65v 5% scope qx lvcmos v dd , v ddo -1.25v5% d ifferential i nput l evel v cmr cross points v pp gnd clk nclk v dd p art - to -p art s kew p ropagation d elay odc & t p eriod clock outputs 0.8v 2v 2v 0.8v t r t f t sk(o) v ddo 2 v ddo 2 qx qy o utput s kew t sk(pp) v ddo 2 v ddo 2 qx qy part 1 part 2 nclk clk q0:q11 t pd v ddo 2 ? ? v dd 2 t period t pw t period odc = v ddo 2 x 100% t pw q0:q11 lvcmos_clk o utput r ise /f all t ime clock outputs 0.6v 1.8v 1.8v 0.6v t r t f v dd = v ddo = 3.3v v dd = v ddo = 2.5v 1.25v5% gnd gnd v dd , v ddo
83948ayi-147 www.icst.com/products/hiperclocks.html rev. b november 21, 2005 7 integrated circuit systems, inc. ics83948i-147 l ow s kew , 1- to -12 d ifferential - to -lvcmos/lvttl f anout b uffer a pplication i nformation f igure 1. s ingle e nded s ignal d riving d ifferential i nput figure 1 shows how the differential input can be wired to accept single ended levels. the reference voltage v_ref = v dd /2 is generated by the bias resistors r1, r2 and c1. this bias circuit should be located as close as possible to the input pin. the ratio w iring the d ifferential i nput to a ccept s ingle e nded l evels of r1 and r2 might need to be adjusted to position the v_ref in the center of the input voltage swing. for example, if the input clock swing is only 2.5v and v dd = 3.3v, v_ref should be 1.25v and r2/r1 = 0.609. i nputs : clk i nput : for applications not requiring the use of a clock input, it can be left floating. though not required, but for additional protection, a 1k resistor can be tied from the clk input to ground. clk/nclk i nput : for applications not requiring the use of the differential input, both clk and nclk can be left floating. though not required, but for additional protection, a 1k resistor can be tied from clk to ground. lvcmos c ontrol p ins : all control pins have internal pull-ups or pull-downs; additional resistance is not required but can be added for additional protection. a 1k resistor can be used. r ecommendations for u nused i nput and o utput p ins o utputs : lvcmos o utput : all unused lvcmos output can be left floating. we recommend that there is no trace attached. v_ref r1 1k c1 0.1u r2 1k single ended clock input clk nclk vdd
83948ayi-147 www.icst.com/products/hiperclocks.html rev. b november 21, 2005 8 integrated circuit systems, inc. ics83948i-147 l ow s kew , 1- to -12 d ifferential - to -lvcmos/lvttl f anout b uffer r eliability i nformation t ransistor c ount the transistor count for ics83948i-147 is: 1040 pin compatible with the mpc9448 t able 6. ja vs . a ir f low t able for 32 l ead lqfp ja by velocity (linear feet per minute) 0 200 500 single-layer pcb, jedec standard test boards 67.8c/w 55.9c/w 50.1c/w multi-layer pcb, jedec standard test boards 47.9c/w 42.1c/w 39.4c/w note: most modern pcb designs use multi-layered boards. the data in the second row pertains to most designs.
83948ayi-147 www.icst.com/products/hiperclocks.html rev. b november 21, 2005 9 integrated circuit systems, inc. ics83948i-147 l ow s kew , 1- to -12 d ifferential - to -lvcmos/lvttl f anout b uffer p ackage o utline - y s uffix for 32 l ead lqfp t able 7. p ackage d imensions n o i t a i r a v c e d e j s r e t e m i l l i m n i s n o i s n e m i d l l a l o b m y s a b b m u m i n i ml a n i m o nm u m i x a m n 2 3 a - -- -0 6 . 1 1 a 5 0 . 0- -5 1 . 0 2 a 5 3 . 10 4 . 15 4 . 1 b 0 3 . 07 3 . 05 4 . 0 c 9 0 . 0- -0 2 . 0 d c i s a b 0 0 . 9 1 d c i s a b 0 0 . 7 2 d . f e r 0 6 . 5 e c i s a b 0 0 . 9 1 e c i s a b 0 0 . 7 2 e . f e r 0 6 . 5 e c i s a b 0 8 . 0 l 5 4 . 00 6 . 05 7 . 0 0 - - 7 c c c - -- -0 1 . 0 r eference d ocument : jedec p ublication 95, ms-026
83948ayi-147 www.icst.com/products/hiperclocks.html rev. b november 21, 2005 10 integrated circuit systems, inc. ics83948i-147 l ow s kew , 1- to -12 d ifferential - to -lvcmos/lvttl f anout b uffer t able 8. o rdering i nformation while the information presented herein has been checked for both accuracy and reliability, integrated circuit systems, incorpor ated (ics) assumes no responsibility for either its use or for infringement of any patents or other rights of third parties, which would result from its use. no other circuits, patent s, or licenses are implied. this product is intended for use in normal commercial and industrial applications. any other applications such as those requiring high reliability or other extr aordinary environmental requirements are not recommended without additional processing by ics. ics reserves the right to change any circuitry or specifications without noti ce. ics does not authorize or warrant any ics product for use in life support devices or critical medical instruments. the aforementioned trademark, hiperclocks is a trademark of integrated circuit systems, inc. or its subsidiaries in the united states and/or other countries. r e b m u n r e d r o / t r a pg n i k r a me g a k c a pg n i g a k c a p g n i p p i h se r u t a r e p m e t 7 4 1 - i y a 8 4 9 3 8 s c i7 4 1 i a 8 4 9 3 8 s c ip f q l d a e l 2 3y a r tc 5 8 o t c 0 4 - t 7 4 1 - i y a 8 4 9 3 8 s c i7 4 1 i a 8 4 9 3 8 s c ip f q l d a e l 2 3l e e r & e p a t 0 0 0 1c 5 8 o t c 0 4 - f l 7 4 1 - i y a 8 4 9 3 8 s c il 7 4 1 i a 8 4 9 s c ip f q l " e e r f - d a e l " d a e l 2 3y a r tc 5 8 o t c 0 4 - t f l 7 4 1 - i y a 8 4 9 3 8 s c il 7 4 1 i a 8 4 9 s c ip f q l " e e r f - d a e l " d a e l 2 3l e e r & e p a t 0 0 0 1c 5 8 o t c 0 4 - . t n a i l p m o c s h o r e r a d n a n o i t a r u g i f n o c e e r f - b p e h t e r a r e b m u n t r a p e h t o t x i f f u s " f l " n a h t i w d e r e d r o e r a t a h t s t r a p : e t o n
83948ayi-147 www.icst.com/products/hiperclocks.html rev. b november 21, 2005 11 integrated circuit systems, inc. ics83948i-147 l ow s kew , 1- to -12 d ifferential - to -lvcmos/lvttl f anout b uffer t e e h s y r o t s i h n o i s i v e r v e re l b a te g a pe g n a h c f o n o i t p i r c s e de t a d b 2 t 8 t 1 2 7 0 1 . t e l l u b e e r f - d a e l d e d d a - n o t i t c e s s e r u t a e f c d e g n a h c - e l b a t s c i t s i r e t c r a r a h c n i p n i d n a ; l a c i p y t f p 4 o t . x a m f p 4 m o r f 5 d e d d a 2 1 d n a . n i m r o t x a m t u o . m a r g a i d t u p n i l a i t n e r e f f i d g n i v i r d l a n g i s d e d n e e l g n i s d e t a d p u d e d d a . s n i p t u p t u o d n a t u p n i d e s u n u r o f s n o i t a d n e m m o c e r . e t o n d n a , g n i k r a m , r e b m u n t r a p e e r f - d a e l d e d d a - e l b a t n o i t a m r o f n i g n i r e d r o 5 0 / 1 2 / 1 1

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