1 ps7050b 12/09/99 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 pi5c16211 24-bit bus switch product description pericom semiconductors pi5c series of logic circuits are produced using the companys advanced 0.6 micron cmos technology. the pi5c16211 is a 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 12-bit bus switch, which provides high speed bus switching. product features ? near-zero propagation delay ?5 w switches connect inputs to outputs ? direct bus connection when switches are on ? ultra-low quiescent power (0.2 a typical) C ideally suited for notebook applications ? industrial operating temperature: C40c to +85c ? packages available: C 56-pin 173-mil wide plastic tvsop (k) C 56-pin 240-mil wide thin plastic tssop (a) C 56-pin 300-mil wide plastic ssop (v) logic block diagram product pin configuration truth table product pin description pin name i/o description s0-s2 i select inputs xax i/o bus a xb x i/o bus b 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 1 a 1 1 a 2 1 a 3 1 a 4 1 a 5 1 a 6 gnd 1 a 7 1 a 8 1 a 9 1 a 10 1 a 11 1 a 12 2 a 1 2 a 2 v cc 2 a 3 gnd 2 a 4 2 a 5 2 a 6 2 a 7 2 a 8 2 a 9 2 a 10 2 a 11 2 a 12 1 oe 1 2 oe 1 b 1 1 b 2 1 b 3 1 b 4 1 b 5 gnd 1 b 6 1 b 7 1 b 8 1 b 9 1 b 10 1 b 11 1 b 12 2 b 1 2 b 2 2 b 3 gnd 2 b 4 2 b 5 2 b 6 2 b 7 2 b 8 2 b 9 2 b 10 2 b 11 2 b 12 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 hl z b 2 = a 2 hh z z 56-pin a, k,v 1b1 1b12 1a1 1a12 2b1 2b12 2a1 1oe 2oe 2a12
pi5c16211 24-bit bus switch 2 ps7050b 12/09/99 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 dc electrical characteristics (over the operating range, t a = C40c to +85c, v cc = 5v 10%) parameters description test conditions min. typ (1) max. units v ik clamp diode voltage v cc = 4.5v, i i = C18ma C1.2 v i i input low current v cc = 5.5v, v i = v cc or gnd 10 v cc = 0v, v i = 5.5v 1 a i cc quiescent power supply current v cc = 5.5v, v i = v cc or gnd 3.0 d i cc supply current per control input v cc = 5.5v, one input at 3.4v, 2.5 ma @ ttl high other inputs at v cc or gnd c i (2) control input capacitance v i = 3v or 0 4.5 c io ( off ) (2) a/b switch off capacitance v o = 3v or 0, oe = v cc 5.5 r on switch on resistance (3) v cc = 4.0v, v i = 2.4v, i i = 15 ma 14 20 v cc = 4.5v, v i = 0v, i i = 64 ma 5 7 v cc = 4.5v, v i = 0v, i i = 30 ma 5 7 v cc = 4.5v, v i = 2.4v, i i = 15 ma 8 12 maximum ratings (above which the useful life may be impaired. for user guidelines, not tested.) storage temperature .................................................................... C65c to +150c ambient temperature with power applied .................................... C40c to +85c supply voltage to ground potential (inputs & vcc only) .............. C0.5v to +7.0v supply voltage to ground potential (outputs & d/o only) ........... C0.5v to +7.0v dc input voltage ............................................................................ C0.5v to +7.0v dc output current ...................................................................................... 120ma power dissipation .......................................................................................... 1.4w note: stresses greater than those listed under maxi- mum 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 reli- ability. notes: 1. typical values are at v cc = 5.0v, t a = 25c ambient and maximum loading. 2. this parameter is determined by device characterization but is not production tested. 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. pf w
pi5c16211 24-bit bus switch 3 ps7050b 12/09/99 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 note: 1. typical values are at v cc = 5.0v, +25c ambient. switching characteristics over operating range notes: 1. this parameter is guaranteed but not tested on propagation delays. the bus switch contributes no propagational delay other th an the rc delay of the on resistance of the switch and the load capacitance. the time constant for the switch alone is of the orde r of 0.25ns for 50pf load. since this time constant is much smaller than the rise/fall times of typical driving signals, it adds ver y little propagational delay to the system. propagational 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. pericom semiconductor corporation 2380 bering drive ? san jose, ca 95131 ? 1-800-435-2336 ? fax (408) 435-1100 ? http://www.pericom.com power supply characteristics s r e t e m a r a pn o i t p i r c s e d. n i mp y t ) 1 ( . x a ms t i n u v c c e g a t l o v y l p p u s0 . 4? 5 . 5v 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 v l i e g a t l o v t u p n i l e v e l w o l??8 . 0v t a p m e t r i a - e e r f g n i t a r e p o0 4 -?5 8c s r e t e m a r a p m o r f ) t u p n i ( o t ) t u p t u o ( t s e t s n o i t i d n o c v c c v 5 . 0 v 5 =v c c v 4 = s t i n u . n i m. x a m. n i m. x a m t d p ) 1 ( b r o aa r o b c l f p 0 5 = r l 0 0 5 = w ? 5 2 . 0 ? 5 2 . 0 s n t n e e ob r o a9 . 33 . 9 ? 1 . 0 1 t s i d e ob r o a3 . 35 . 8 ? 1 . 7 t r a pe g a k c a p - n i pe r u t a r e p m e t a 1 1 2 6 1 c 5 i p) a ( p o s s t - 6 5c 5 8 + o t c 0 4 ? k 1 1 2 6 1 c 5 i p) k ( p o s s t - 6 5c 5 8 + o t c 0 4 ? v 1 1 2 6 1 c 5 i p) v ( p o s s t - 6 5c 5 8 + o t c 0 4 ? ordering information
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