1 ps8419b 08/02/02 1 2 3 av cc 4 clk_out clk_in gnd fb_in 8 7 6 5 agnd v cc s product pin configuration logic block diagram 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 62401 ? high-performance phase-locked-loop clock distribution for networking, atm, 100/134 mhz registered dimm synchro- nous dram modules for server/workstation/pc applications ? zero input-to-output delay ? low jitter: cycle-to-cycle jitter 100ps max. ? on-chip series damping resistor at clock output drivers for low noise and emi reduction ? operates at 3.3v v cc ? packaged in plastic 8-pin soic package (w) ? wide range of clock frequencies phase-locked loop clock driver product description the PI6C2401 features a low-skew, low-jitter, phase-locked loop (pll) clock driver. by connecting the feedback clk_out output to the feedback fb_in input, the propagation delay from the clk_in input to any clock output will be nearly zero. application if the system designer needs more than 16 outputs with the features just described, using two or more zero-delay buffers such as pi6c2509q, and pi6c2510q, is likely to be impractical. the device- to-device skew introduced can significantly reduce the performance. pericom recommends the use of a zero-delay buffer and an eighteen output non-zero-delay buffer . as shown in figure 1, this combination produces a zero-delay buffer with all the signal characteristics of the original zero-delay buffer, but with as many outputs as the non-zero-delay buffer part. for example, when combined with an eighteen output non-zero delay buffer, a system designer can create a seventeen-output zero-delay buffer. figure 1. this combination provides zero-delay between the reference clocks signal and 17 outputs 17 zero delay buffer PI6C2401 reference clock signal clk_out feedback 18 output non-zero delay buffer v se c r u o s t u p t u on w o d t u h s l l p 1l l pn 0n i _ k l cy control input clk_in fb_in s pll clk_out 8-pin w
PI6C2401 phase-locked loop clock driver 2 ps8419b 08/02/02 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 e m a n n i pr e b m u n n i pe p y tn o i t p i r c s e d n i _ k l c1i . t u p n i k c o l c m u r t c e p s d a e r p s s w o l l a n i _ k l c . t u p n i k c o l c e c n e r e f e r v a c c 2r e w o p. y l p p u s r e w o p g o l a n a d n g a3 d n u o r g. d n u o r g g o l a n a t u o _ k l c4o n i _ k l c f o s e i p o c w e k s - w o l s e d i v o r p t u p t u o e h t . s t u p t u o k c o l c . r o t s i s e r g n i p m a d - s e i r e s d e d d e b m e n a s a h d n a s5 i t u p n i l o r t n o c. s. s e s o p r u p t s e t r o f l l p e h t s s a p y b o t d e s u s i s n i _ k l c d n a d e s s a p y b s i l l p , d n u o r g o t d e p p a r t s s i s n e h w . s t u p t u o e c i v e d e h t o t y l t c e r i d d e r e f f u b s i d n g6 d n u o r g. d n u o r g v c c 7r e w o p. y l p p u s r e w o p n i _ b f8i b f . t u p n i k c a b d e e f n i . l l p l a n r e t n i e h t o t l a n g i s k c a b d e e f e h t s e d i v o r p pin functions l o b m y sr e t e m a r a p. n i m. x a ms t i n u v i e g n a r e g a t l o v t u p n i ? 5 . 0 v c c 5 . 0 + v v o e g n a r e g a t l o v t u p t u o i v _ c de g a t l o v t u p n i c d0 . 5 + o i _ c dt n e r r u c t u p t u o c d0 0 1a m r e w o pt t a n o i t a p i s s i d r e w o p m u m i x a m a 5 5 = o r i a l l i t s n i c0 . 1w t g t s e r u t a r e p m e t e g a r o t s5 6 -0 5 1 o c dc specifications (absolute maximum ratings over operating free-air temperature range) r e t e m a r a ps n o i t i d n o c t s e tv c c . n i m. p y t. x a ms t i n u i c c v i v = c c i ; d n g r o o 0 = ) 1 ( v 6 . 30 1 a c i v i v = c c d n g r o v 3 . 3 4 f p c o v o v = c c d n g r o6 note: stress beyond those listed under ?absolute maximum ratings? may cause permanent damage to the device. note: 1. continuous output current
PI6C2401 phase-locked loop clock driver 3 ps8419b 08/02/02 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 recommended operating conditions l o b m y sr e t e m a r a p. n i m. x a ms t i n u v c c e g a t l o v y l p p u s0 . 36 . 3 v v h i e g a t l o v t u p n i l e v e l h g i h0 . 2 v l i e g a t l o v t u p n i l e v e l w o l8 . 0 v i e g a t l o v t u p n i0v c c t a e r u t a r e p m e t r i a - e e r f g n i t a r e p o00 7c o l o b m y sr e t e m a r a pn o i t i d n o c. n i m. x a ms t i n u i h o t n e r r u c p u - l l u p v t u o v 4 . 2 = ? 2 1 a m v t u o v 0 . 2 = ? 8 1 i l o t n e r r u c n w o d - l l u p v t u o v 8 . 0 =8 1 v t u o v 5 5 . 0 =2 1 electrical characteristics (over recommended operating free-air temperature range pull up/down currents, v cc = 3.0v) ac specifications timing requirements (over recommended ranges of supply voltage and operating free-air temperature) l o b m y sr e t e m a r a p. n i m. x a ms t i n u f k c o l c y c n e u q e r f k c o l c5 24 3 1z h m d i y c e l c y c y t u d k c o l c t u p n i0 40 6% p u r e w o p r e t f a e m i t n o i t a z i l i b a t s1s m r e t e m a r a pm o r fo t v c c c 0 7 - 0 , v 3 . 0 v 3 . 3 = s t i n u . n i m. p y t. x a m r e t t i j t u o h t i w r o r r e e s a h p t n i _ k l c z h m 0 0 1 t a z h m 6 6 d n a n i _ b f 0 5 1 ?0 5 1 + s p e l c y c - o t - e l c y c , r e t t i jz h m 6 6 d n a z h m 0 0 1 t at u o _ k l c0 0 1 ?0 0 1 + e l c y c y t u d t u o _ k l c 5 45 5% v 0 . 2 o t v 4 . 0 , e m i t - e s i r , r t 0 . 1 s n v 4 . 0 o t v 0 . 2 , e m i t - l l a f , f t 1 . 1 switching characteristics (over recommended ranges of supply voltage and operating free-air temperature, c l =30pf) note: these switching parameters are guaranteed by design.
PI6C2401 phase-locked loop clock driver 4 ps8419b 08/02/02 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 pericom semiconductor corporation 2380 bering drive ? san jose, ca 95131 ? 1-800-435-2336 ? fax (408) 435-1100 ? http://www.pericom.com package mechanical information plastic 8-pin soic package e d o c g n i r e d r oe m a n e g a k c a pe p y t e g a k c a pe g n a r g n i t a r e p o w 1 0 4 2 c 6 i p8 wc i o s l i m - 0 5 1 n i p - 8l a i c r e m m o c ordering information .0040 .0098 seating plane .013 .020 .050 bsc .016 .0075 .0098 1 8 .0099 .0196 0-8? .050 .149 .157 x.xx x.xx denotes dimensions in millimeters 3.78 3.99 .189 .196 4.80 5.00 1.27 .016 .026 1.35 1.75 .2284 .2440 5.80 6.20 0.406 0.660 0.330 0.508 0.10 0.25 0.40 1.27 0.19 0.25 0.25 0.50 x 45? .053 .068 ref
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