1 ps8559 08/09/01 block diagram (PI49FCT3802) product features ? high frequency >156 mhz ? high-speed, low-noise, non-inverting buffer - PI49FCT3802 is 1:5 buffer - pi49fct3803 is 1:7 buffer ? low-skew (<250ps) between any two output clocks ? low duty cycle distortion <250ps ? low propagation delay <2.5ns ? 5v tolerant input ? multiple v dd , gnd pins for noise reduction ? 3.3v supply voltage ? packages available: - tssop and qsop 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1 2345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012 12345678901 2 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1:5/1:7 clock buffer for networking applications PI49FCT3802/pi49fct3803 description the pi49fct380x is a 3.3v compatible, high-speed, low-noise non-inverting clock buffer. the key goal in designing the pi6c380x is to target networking applications that require low-skew, low- jitter, and high-frequency clock distribution. providing output-to-output skew as low as 250ps, the pi49fct380x is an ideal clock distribution device for synchronous systems. designing synchronous networking systems requires a tight level of skew from a large number of outputs. clk4 clk2 clk1 clk0 buf_in clk3 1 2 3 v dd 4 clk1 5 clk0 6 nc 7 v dd 8 gnd v dd clk3 gnd v dd nc gnd 16 15 14 13 12 11 10 9 buf_in gnd clk2 clk4 pin configuration (PI49FCT3802) 16-pin l, q block diagram (pi49fct3803) clk6 clk2 clk1 clk0 buf_in clk3 1 2 3 v dd 4 clk1 5 clk0 6 clk2 7 v dd 8 gnd v dd clk5 gnd v dd clk3 gnd 16 15 14 13 12 11 10 9 buf_in gnd clk4 clk6 pin configuration (pi49fct3803) 16-pin l, q e m a n n i p n o i t p i r c s e d 2 0 8 3 t c f 9 4 i p3 0 8 3 t c f 9 4 i p n i _ f u b ] 4 : 0 [ k l c d n g v d d n i _ f u b ] 6 : 0 [ k l c d n g v d d t u p n i s t u p t u o d n g r e w o p product pin description
2 ps8559 08/09/01 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 PI49FCT3802/pi49fct3803 1:5/1:7 clock buffers for networking applications storage temperature ........................................................... ?65c to +150c v dd voltage ............................................................................. ?0.5v to 5.5v output voltage ......................................................................... ?0.5v to 5.5v input voltage ........................................................................... ?0.5v to 5.5v dc output current ............................................................. ?60ma to +60ma power dissipation ............................................................................. 500mw maximum ratings (above which the useful life may be impaired. for user guidelines, not tested.) note: stresses greater than those listed under maximum ratings may cause permanent damage to the device. this is a stress rating only and functional operation of the device at these or any other condi- tions above those indicated in the operational sec- tions of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect reliability. notes: 1. for max. or min. conditions, use appropriate value specified under electrical characteristics for the applicable device type. 2. typical values are at v dd = 3.3v, +25c ambient and maximum loading. 3. v oh = v dd ? 0.6v at rated current. 4. this parameter is determined by device characterization but is not production tested. 5. not more than one output should be shorted at one time. duration of the test should not exceed one second. s r e t e m a r a pn o i t p i r c s e ds n o i t i d n o c t s e t ) 1 ( . n i m. p y t ) 2 ( . 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 i) s n i p t u p n i ( l e v e l h g i h c i g o l d e e t n a r a u g0 . 2?5 . 5 v v l i e g a t l o v w o l t u p n i) s n i p t u p n i ( l e v e l w o l c i g o l d e e t n a r a u g5 . 0 ??8 . 0 i h i t n e r r u c h g i h t u p n iv d d . x a m =v n i v = d d ?? 1 m a i l i t n e r r u c w o l t u p n iv d d . x a m =v n i d n g =??1 ? v k i e g a t l o v e d o i d p m a l cv d d i , . n i m = n i a m 8 1 ? =?7 . 0 ?2 . 1 ? v v h o e g a t l o v h g i h t u p t u ov d d v , . n i m = n i v = h i v r o l i i h o a m 1 . 0 ? =v d d 2 . 0 ??? i h o a m 2 1 ? =4 . 2 ) 3 ( 0 . 3? v l o e g a t l o v w o l t u p t u ov d d v , . n i m = n i v = h i v r o l i i l o a m 1 . 0 =??2 . 0 i l o a m 2 1 =?3 . 05 . 0 i h o t n e r r u c h g i h t u p t u ov d d v , v 0 . 3 = n i v = h i v r o l i v , t u o v 5 . 1 = ) 4 ( 5 4 ?5 7 ?0 8 1 ? a m i l o t n e r r u c w o l t u p t u ov d d v , v 0 . 3 = n i v = h i v r o l i v , t u o v 5 . 1 = ) 4 ( 0 52 90 0 2 dc electrical characteristics (over the operating range) operating range v dd voltage ................................................................................. 3.3v 0.3v commercial temperature ........................................................... 0c to +70c industrial temperature .......................................................... ?40c to +85c input frequency .................................................................... dc to 156 mhz capacitive loading ................................................................... 10pf to 50pf
3 ps8559 08/09/01 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 PI49FCT3802/pi49fct3803 1:5/1:7 clock buffers for networking applications notes: 1. for max. or min. conditions, use appropriate value specified under electrical characteristics for the applicable device. 2. typical values are at v dd = 3.3v, +25c ambient. 3. per ttl driven input (v in = v dd ? 0.6v); all other inputs at v dd or gnd. capacitance (t a = 25c, f = 1 mhz) parameters (1) description test conditions typ max. units c in input capacitance v in = 0v 3.0 4 c out output capacitance v out = 0v ? 6 note: 1. this parameter is determined by device characterization but is not production tested. pf s r e t e m a r a pn o i t p i r c s e ds n o i t i d n o c t s e t ) 1 ( . n i m. p y t ) 2 ( . x a ms t i n u i q d d t n e r r u c y l p p u s r e w o p t n e c s e i u qv d d . x a m =v n i v r o d n g = d d ?1 . 00 3 a d i d d r e p t n e r r u c y l p p u s h g i h l t t @ s t u p n i v d d . x a m =v n i v = d d v 6 . 0 ? ) 3 ( ?7 40 0 3 i d d t n e r r u c y l p p u s c i m a n y d v d d , v 6 . 3 = d a o l o n z h m 0 5?3 4? a m z h m 7 6?6 5? z h m 0 8?6 6? z h m 0 0 1?1 8? z h m 5 2 1?7 9? z h m 6 5 1?1 2 1? power supply characteristics notes: 1. see test circuit and waveforms. 2. minimum limits are guaranteed but not tested on propagation delays. 3. skew measured at worse cast temperature (max. temp). 4. identical conditions: loading, transitions, supply voltage, temperature, package type and speed grade. s r e t e m a r a pn o i t p i r c s e ds n o i t i d n o c t s e t ) 1 ( . n i m. p y t. x a ms t i n u t r t / f v 0 . 2 ~ v 8 . 0 e m i t l l a f / e s i r n k l cc l z h m 5 2 1 , f p 5 1 =?7 . 00 . 1 s n t h l p t l h p n k l c o t n i _ f u b y a l e d n o i t a g a p o r pc l z h m 5 2 1 , f p 5 1 =0 . 12 . 25 . 2 t ) o ( k s ) 3 ( e g a k c a p e m a s e h t f o s t u p t u o o w t n e e w t e b w e k s ) n o i t i s n a r t e m a s ( c l z h m 5 2 1 , f p 5 1 =?0 1 10 5 2 s p t ) p ( k s ) 3 ( t ( s n o i t i s n a r t e t i s o p p o n e e w t e b w e k s l h p t - h l p ) t u p t u o e m a s e h t f o c l z h m 5 2 1 , f p 5 1 =?0 0 20 5 2 t ) t ( k s ) 3 ( e g a k c a p t n e r e f f i d f o s t u p t u o o w t n e e w t e b w e k s ) 4 ( c l z h m 5 2 1 , f p 5 1 =??5 5 . 0s n switching characteristics (v dd = 3.3v 0.3v, t a = 85c)
4 ps8559 08/09/01 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 PI49FCT3802/pi49fct3803 1:5/1:7 clock buffers for networking applications switching waveforms propagation delay package skew ? t sk(t) pulse skew ? t sk(p) output skew ? t sk(o) input t plh 3v 1.5v 0v output v oh 1.5v v ol t phl 2.0v 0.8v t r t f input t plh 3v 1.5v 0v output v oh 1.5v v ol t phl t sk(p) = | t phl C t plh | input t plhx 3v 1.5v 0v clkx v oh 1.5v v ol t phlx t sk(o) clky v oh 1.5v v ol t sk(o) t plhy t phly t sk(o) = t plhy ?t plhx or t phly ?t phlx input t plh1 3v 1.5v 0v package 1 output v oh 1.5v v ol t phl1 t sk(t) package 2 output v oh 1.5v v ol t sk(t) t plh2 t phl2 t sk(t) = t plh2 C t plh1 or t phl2 C t phl1 test circuits for all outputs definitions: c l = load capacitance: includes jig and probe capacitance. r t = termination resistance, should be equal to zout of the pulse generator. pulse generator d.u.t. v in v out c l v dd
5 ps8559 08/09/01 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 PI49FCT3802/pi49fct3803 1:5/1:7 clock buffers for networking applications pericom semiconductor corporation 2380 bering drive ? san jose, ca 95131 ? 1-800-435-2336 ? fax (408) 435-1100 ? http://www.pericom.com .189 .197 .053 .069 .004 .010 seating plane .025 bsc .007 .010 .228 .244 1 16 .150 .157 .016 .050 x.xx x.xx denotes dimensions in millimeters 0.635 4.80 5.00 1.35 1.75 5.79 6.19 0.101 0.254 .008 .012 0.203 0.305 3.81 3.99 0.178 0.254 0.38 0.41 1.27 .008 0.203 .015 x 45 ref detail a detail a .008 0.20 min. guage plane .010 0.254 .041 1.04 ref .016 .035 0.41 0.89 0?-6? .008 .013 0.20 0.33 .193 .201 .047 max. .002 .006 seating plane .0256 bsc .018 .030 .004 .008 .252 bsc 1 16 .169 .177 x.xx x.xx denotes controlling dimensions in millimeters 0.05 0.15 6.4 0.45 0.75 0.09 0.20 4.3 4.5 1.20 4.9 5.1 0.65 0.19 0.30 .007 .012 16-pin qsop (q) package 16-pin tssop (l) package e d o c g n i r e d r oe p y t e g a k c a p q 2 0 8 3 t c f 9 4 i pp o s q e d i w l i m 0 5 1 n i p - 6 1 l 2 0 8 3 t c f 9 4 i pp o s s t e d i w l i m 3 7 1 n i p - 6 1 q 3 0 8 3 t c f 9 4 i pp o s q e d i w l i m 0 5 1 n i p - 6 1 l 3 0 8 3 t c f 9 4 i pp o s s t e d i w l i m 3 7 1 n i p - 6 1 ordering information
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