1 ps8176f 01/02/07 pi3b16211 3.3v, hot insertion, 24-bit busswitch description pericom semiconductor?s 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. 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 ? packaging (pb-free & green available): ? 56-pin 240-mil wide thin plastic tssop (a) ? 56-pin 300-mil wide plastic ssop (v) ? 56-pin 173-mil wide thin plastic tvsop (k) block diagram pin configuration truth table (1) pin description note: 1. h = high voltage level, l = low voltage level z = high impedance 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 25 26 27 28 32 31 30 29 nc 1a1 1a2 1a3 1a4 1a5 1a6 gnd 1a7 1a8 1a9 1a10 1a11 1a12 2a1 2a2 v cc 2a3 gnd 2a4 2a5 2a6 2a7 2a8 2a9 2a10 2a11 2a12 1oe 2oe 1b1 1b2 1b3 1b4 1b5 gnd 1b6 1b7 1b8 1b9 1b10 1b11 1b12 2b1 2b2 2b3 gnd 2b4 2b5 2b6 2b7 2b8 2b9 2b10 2b11 2b12 e o 1e o 2s o / i b 1 , a 1s o / i b 2 , a 2 ll b 1 = a 1b 2 = a 2 lh b 1 = a 1z hlz b 2 = a 2 hhz z 1a1 1oe 2oe 1a12 2a1 2a12 2b1 2b12 12b1 1b12 e m a n n i po / in o i t p i r c s e d e o 2 , e o 1i s t u p n i t c e l e s x a xo / ia s u b x b xo / ib s u b 07-0001
2 ps8176f 01/02/07 pi3b16211 3.3v, hot insertion, 24-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 rat- ings 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. 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 s r e t e m a r a p ) 1 ( 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 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. 07-0001
pi3b16211 3.3v, hot insertion, 24-bit bus switch 3 ps8176f 01/02/07 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 is guarantee d by design. switching characteristics over operating range notes: 1. this parameter is guaranteed but not tested on propagation delays. 2. the bus switch contributes no propagational delay other than the rc delay of the on-resistance of the switch and the load cap acitance. 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 r ise/fall times of typical driving signals, it adds very little propagational delay to the system. propagational delay of the bus switch when use d 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 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 1 a 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 . 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 ) 2 , 1 ( x a o t x b , x b o t x a c l f p 0 5 = r l m h o - 0 0 5 = rm h o - 0 0 5 = 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 o x 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 o x 10 . 5 07-0001
4 ps8176f 01/02/07 pi3b16211 3.3v, hot insertion, 24-bit bus switch packaging mechanical: 56-pin tssop (a) packaging mechanical: 56-pin ssop (v) 0.25 0.20 .025 bsc 0.635 .00 8 .00 8 .016 0- 8 ? 0.20 0.40 .110 2.79 .010 gauge plane .291 .299 x.xx x.xx de n otes dime n sio n s i n millimeters 7.39 7.59 .396 .416 10.06 10.56 .02 .04 0.51 1.01 .015 .025 0.3 8 1 0.635 .720 .730 1 8 .29 1 8 .54 .00 8 .0135 0.20 0.34 1 56 x 45? n om. max 07-0001
pi3b16211 3.3v, hot insertion, 24-bit bus switch 5 ps8176f 01/02/07 packaging mechanical: 56-pin tvsop (k) .047 .031 .041 seati n g pla n e .016 bsc 1 56 .169 .177 11.20 11.40 4.30 4.50 1.20 0.40 0.13 0.23 0. 8 0 1.05 .002 .006 0.05 0.15 .0035 .00 8 0.09 0.20 .01 8 .030 0.45 0.75 6.4 .252 bsc .005 .009 .441 .449 max. notes: ? thermal characteristics can be found on the company web site at www.pericom.com/packaging/ ? e = pb-free & green ? adding x suffix = tape/reel ordering information ordering code package code package type PI3B16211A a 56-pin 240-mil wide tssop PI3B16211Ae a pb-free & green, 56-pin 240-mil wide tssop pi3b1621v v 56-pin 300-mil wide ssop pi3b16211k k 56-pin 173-mil wide tvsop pi3b16211ke k pb-free & green, 56-pin 173-mil wide tvsop pericom semiconductor corporation ? 1-800-435-2336 ? www.pericom.com 07-0001
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