1 pxxxx 08/09/01 x e o y e o x , a x s o / i b y , a y s o / i b ll x = a x b y = a y b lh x = a x bz hlz y = a y b hhz z 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1 2345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012 12345678901 2 pi3b72211 3.3v, hot insertion, 72-bit bus switch product description pericom semiconductor?s pi3b series of logic circuits are produced using the company?s advanced submicron cmos technology. the pi3b16211 is a 3.3 volt, hot insertion, 24-bit bus switch designed with a low on resistance allowing inputs to be connected directly to outputs. this device operates as a 24-bit or a as 12-bit bus switch that provides high-speed bus switching. product features ? near-zero propagation delay ? 5-ohm switches connect inputs to outputs ? fast switching speed - 4.5ns max. ? permits hot insertion ?v cc operating range: 3.0v to 3.6v ? industrial operating temperature: ?40c to +85c ? packages available: ? 168-ball thin fine pitch ball grid array, gfpbga logic block diagram truth table product pin description note: 1. h = high voltage level l = low voltage level z = high impedance x = 1, 3, 5 y = 2, 4, 6 n = 1 through 12 1a1 1oe 2oe 1a12 2a1 2a12 2b1 2b12 12b1 1b12 3a1 3oe 4oe 3a12 4a1 4a12 4b1 4b12 3b1 3b12 5a1 5oe 6oe 5a12 6a1 6a12 6b1 6b12 5b1 5b12 e m a n n i po / in o i t p i r c s e d x , e o y e oi s t u p n i t c e l e s x , y a n o / ia s u b x , y a n o / ib s u b target specification
2 pxxxx 08/09/01 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 target specification pi3b72211 3.3v, hot insertion, 72-bit bus switch capacitance (t a = 25c, f = 1 mhz) dc electrical characteristics (over the operating range, t a = ?40c to +85c, v cc = 3.0v to 3.6v storage temperature ...................................................... ?65c to +150c ambient temperature with power applied ........................ ?0c to +85c supply voltage range ....................................................... ?0.5v to +4.6v dc input voltage ............................................................... ?0.5v to +4.6v dc output current ........................................................................ 120 ma power dissipation ............................................................................. 0.5w 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 conditions above those indicated in the operational 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. 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. 4. 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 . 2v 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 ; . x a m = n i v = c c 1 a i l i t n e r r u c w o l t u p n iv c c v ; . x a m = n i =d n g1 i h z o t n e r r u c t u p t u o e c n a 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 ? =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 ) 3 ( v c c v , . n i m = n i i , v 0 . 0 = n o a m 4 6 r o a m 8 4 = v c c v , . n i m = n i i , v 4 . 2 = n o a m 5 1 = 5 0 1 8 5 1 w 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 = 0 . 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 / a5 . 8 c n o n o h c t i w s , e c n a t i c a p a c b / a 0 . 7 1
3 pxxxx 08/09/01 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 target specification pi3b72211 3.3v, hot insertion, 72-bit bus switch power supply characteristics 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. r l = 500 ohms , r = 500 ohms (4) switching characteristics over 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 s maller than the rise/fall times of typical driving signals, it adds very little propagational delay to the system. propagational dela y 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 wit h the load on the driven side. 4. applies to t pzx , t pxz . 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 mp 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 qv c c . x a m =v n i d n g = v r o c c 0 3 a d i c c h g i h l t t @ t u p n i r e p t n e r r u c y l p p u sv c c . x a m =v n i v 0 . 3 = ) 3 ( 0 5 7 i d c c z h m r e p t u p n i r e p t n e r r u c y l p p u s ) 4 ( v c c . x a m = n e p o n i p b & a g n i l g g o t t u p n i l o r t n o c e l c y c y t u d % 0 5 5 2 . 0/ a m z h m 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) . m o c s t i n u . x a m. n i m t h l p t l h p y a l e d n o i t a g a 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 5 = 0 s m h o 0 r5 = 0 s m h o 0 5 2 . 0 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 e b 15 . 4 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 e b 10 . 5
4 pxxxx 08/09/01 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 target specification pi3b72211 3.3v, hot insertion, 72-bit bus switch t r a pn i pe g a k c a ph t d i we r u t a r e p m e t a 1 1 2 2 7 b 3 i p8 6 1a g b p f td b tc 5 8 o t c 0 4 ? pericom semiconductor corporation 2380 bering drive ? san jose, ca 95131 ? 1-800-435-2336 ? fax (408) 435-1100 ? http://www.pericom.com 168-ball thin fine pitch ball grid array, gfpbga ordering information
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