1 p s 8 1 6 1 c 0 2 / 0 4 / 0 0 be a b 0 a 0 a 1 b 1 b 2 a 2 a 3 b 3 b 4 a 4 gnd v cc b 9 a 9 a 8 b 8 b 7 a 7 a 6 b 6 b 5 a 5 be b 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 product description pericom semiconductor?s pi3c series of logic circuits are produced using the company?s advanced submicron cmos technology, achieving industry performance. the pi3c3384, and PI3C32384 are 2.5v or 3.3volt, high bandwidth 10-bit, 2-port bus switches designed with a low on resistance allowing inputs to be connected directly to outputs. the bus switch creates no additional propagational delay or additional ground bounce noise. the switches are turned on by the bus enable (be) input signal. two bus enable signals are provided, one for each of the upper and lower five bits of the two 10-bit buses. the PI3C32384 is designed with an internal 25 w resistor reducing noise reflection in high-speed applications. product pin configuration product pin description pin name description be a , be b bus enable inputs (active low) a 0 - a 9 bus a b 0 - a 9 bus b gnd ground v cc power product features ? near-zero propagation delay ? low noise, 25 w version (PI3C32384) ?5 w switches connect inputs to outputs (pi3c3384) ? high bandwidth (>400 mhz) ? permits hot insertion. ? rail-to-rail, 3.3v or 2.5v switching ? 5v i/o tolerant ? 2.5v supply voltage operation ? packages available: ? 24-pin 150-mil wide plastic qsop (q) ? 24-pin 173-mil wide plastic tssop (l) applications ? high bandwidth data switching ? hot docking 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 function be a be b b 0-b4 b 5-b9 disconnect h h hi-z hi-z connect l h a 0-a4 hi-z connect h l hi-z a 5-a9 connect l l a 0-a4 a 5-a9 truth table (1) logic block diagram pi3c3384 PI3C32384 (25 w w w w w ) 2.5v/3.3v, high bandwidth, hot insertion 10-bit, 2-port, bus switch note: 1. h = high voltage level, x = don?t care, l = low voltage level, hi-z = high impedance 24-pin l,q be a a4 a0 b4 b0 a9 a5 b9 b5 be b
pi3c3384/PI3C32384 (25 w w w w w ) 2.5v/3.3v, high bandwidth, hot insertion, 10-bit, 2-port busswitch 2 p s 8 1 6 1 c 0 2 / 0 4 / 0 0 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 storage temperature ........................................................... ?65c to +150c ambient temperature with power applied .......................... ?40c to +85c supply voltage to ground potential (inputs & v cc only) ... ?0.5v to +4.6v supply voltage to ground potential (outputs & d/o only) ?0.5v to +4.6v dc input voltage ................................................................... ?0.5v to +5.5v dc output current .............................................................................. 120 ma power dissipation .................................................................................... 0.5w note: stresses greater than those listed under maximum ratings may cause permanent dam- age to the device. this is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the opera- tional sections 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 cc = 3.3v, t a = 25c ambient and maximum loading. 3. not more than one output should be shorted at one time. duration of the test should not exceed one second. 4. measured by the voltage drop between a and b pin at indicated current through the switch. on resistance is determined by the lower of the voltages on the two (a,b) pins. 5. this parameter is determined by device characterization but is not production tested. maximum ratings (above which the useful life may be impaired. for user guidelines, not tested.) 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 il e v e l h g i h c i g o l d e e t n a r a u g0 . 2?? v v l i e g a t l o v w o l t u p n il 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 c c v = n i v , . x a m = c c ?? 1 a i l i t n e r r u c w o l t u p n iv c c n i v , . x a m = = d n g??1 i h z o t n e r r u c t u p t u o e c n e d e p m i - h g i h0 b , a v c c ?? 1 v k i e g a t l o v e d o i d p m a l cv c c i , . n i m = n i a m 8 1 ? =?3 7 . 0 ?2 . 1 ?v r n o e c n a t s i s e r n o h c t i w s ) 4 ( v c c v , . n i m = n i v 0 . 0 = i n o a m 4 6 r o a m 8 4 = 4 8 3 3 c 3 i p?57 w 4 8 3 2 3 c 3 i p8 18 20 4 v c c v , . n i m = n i v 4 . 2 = i n o a m 5 1 = 4 8 3 3 c 3 i p?85 1 4 8 3 2 3 c 3 i p8 15 38 4 dc electrical characteristics (over operating range, t a = ?40c to +85c, v cc = 3.3v 10%) capacitance (t a = 25c f = 1 mhz) s r e t e m a r a p ) 5 ( n o i t p i r c s e ds n o i t i d n o c t s e t. p y ts t i n u c n i e c n a t i c a p a c t u p n i v n i v 0 = 5 . 3 f p c f f o f f o h c t i w s , e c n a t i c a p a c b / a0 . 5 c n o n o h c t i w s , e c n a t i c a p a c b / a0 . 0 1
pi3c3384/PI3C32384 (25 w w w w w ) 2.5v/3.3v, high bandwidth, hot insertion, 10-bit, 2-port busswitch 3 ps8161c 02/04/00 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 pi3c3384/PI3C32384 switching characteristics over 3.3v operating range notes: 1. for max. or min. conditions, use appropriate value specified under electrical characteristics for the applicable device. 2. typical values are at v cc = 3.3v, +25c ambient. 3. per ttl driven input (control inputs only); a and b pins do not contribute to i cc . 4. this current applies to the control inputs only and represent the current required to switch internal capacitance at the spec ified frequency. the a and b inputs generate no significant ac or dc currents as they transition. this parameter is not tested, but i s guaranteed by design. 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 c c 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 q v c c , . x a m = v n i v r o d n g = c c 4 8 3 3 c 3 i p 4 8 3 2 3 c 3 i p ?0 6 20 0 5 a d i c c t u p n i r e p t n e r r u c y l p p u s h g i h l t t @ v c c , . x a m = v n i= v 0 . 3 ) 3 ( ?? 0 5 7 power supply characteristics 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 ) 1 ( 4 8 3 3 c 3 i p4 8 3 2 3 c 3 i p s t i n u . m o c. m o c . n i m. x a m. n i m. x a m t h l p t l h p y a l e d n o i t a g o p o r p ) 3 , 2 ( x a o t x b , x b o t x a c l f p 0 5 = r l 0 0 5 = w ?5 2 . 0? 5 2 . 1 s n t h z p t l z p e m i t e l b a n e s u b x b r o x a o t x e b c l f p 0 5 = r l 0 0 5 = w 0 0 5 = r w 5 . 15 . 65 . 15 . 6 t z h p t z l p e m i t e l b a s i d s u b x b r o x a o t x e b 5 . 15 . 55 . 15 . 5 pi3c3384/PI3C32384 switching characteristics over 2.5v operating range notes: 1. see test circuit and waveforms. 2. this parameter is guaranteed but not tested on propagation delays. 3. the bus switch contributes no propagational delay other than the rc delay of the on resistance of the switch and the load capacitance. the time constant for the switch alone is of the order of 0.25ns for 50pf load. since this time constant is much smaller than the rise/fall times of typical driving signals, it adds very little propagational delay to the system. propagatio nal delay of the bus switch when used in a system is determined by the driving circuit on the driving side of the switch and its interaction with the load on the driven side. 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 ) 1 ( 4 8 3 3 c 3 i p4 8 3 2 3 c 3 i p s t i n u . m o c. m o c . n i m. x a m. n i m. x a m t h l p t l h p y a l e d n o i t a g o p o r p ) 3 , 2 ( x a o t x b , x b o t x a c l f p 0 5 = r l 0 0 5 = w ?5 2 . 0? 5 2 . 1 s n t h z p t l z p e m i t e l b a n e s u b x b r o x a o t x e b c l f p 0 5 = r l 0 0 5 = w 0 0 5 = r w 5 . 18 . 95 . 18 . 9 t z h p t z l p e m i t e l b a s i d s u b x b r o x a o t x e b 5 . 13 . 85 . 13 . 8
pi3c3384/PI3C32384 (25 w w w w w ) 2.5v/3.3v, high bandwidth, hot insertion, 10-bit, 2-port busswitch 4 p s 8 1 6 1 c 0 2 / 0 4 / 0 0 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 4.0 2.0 0.0 0.0 1.0 2.0 3.0 4.0 5.0 v out , (v) v in , (v) v cc = 3.3v 3.1v 2.9v 2.7v 2.5v 2.3v 3.6v 3.8v 3.4v 3.2v 3.0v 2.8v output voltage vs. input voltage over various supply voltages t r a pe g a k c a p - n i ps n o i s n e m i d l 4 8 3 3 c 3 i p) l ( p o s s t - 4 2c 5 8 + o t c 0 4 ? q 4 8 3 3 c 3 i p) q ( p o s q - 4 2c 5 8 + o t c 0 4 ? ordering information pericom semiconductor corporation 2380 bering drive ? san jose, ca 95131 ? 1-800-435-2336 ? fax (408) 435-1100 ? http://www.pericom.com
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