1 ps8459d 03/13/01 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 product features ?r on is 9 ohm typical ? pulldown on b ports ? low power: 1mw ? industrial operation temperature: ?40oc to 85oc ? near zero propagation delay ? switching speed: 4.5ns max. (for 3.3v operation) ? channel on capacitance: 9pf (typ.) ?v cc operating range: +2 to +3.6v ? >100 mhz bandwidth ? packages: 56-pin tssop product description pericom semiconductor?s pi3c series of logic circuits are produced using the company?s advanced submicron cmos technology. the PI3C16234 is a 16-bit to 32-bit mux/demux switch. industry leading advantages include almost zero propagation delay of 500ps because of the 9ohm channel resistance and low i/o capacitance. a1 port demultiplexes to either port b1 or b2 and the switch is bidirectional. application private memory module switching PI3C16234 3.3v, high bandwidth, 16-bit to 32-bit mux/demux busswitch logic block diagram product pin configuration function table n o i t c e l e sn o i t c n u f ln a n o t l b l hn a n o t l b 2 note: n = 1?16 1 2 3 4 5 6 7 gnd 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 1 b 1 2 b 1 2 a 1 3 b 1 4 b 1 4 a 1 5 b 1 6 b 1 6 a 1 7 b 1 8 b 1 8 a 1 9 b 1 10 b 1 10 a 1 11 b 1 12 b 1 12 a 1 13 b 1 14 b 1 14 a 1 16 a 1 sel 15 b 1 16 b 1 nc v cc 11 b 2 nc 16 b 2 15 b 2 15 a 1 14 b 2 13 b 2 13 a 1 11 a 1 10 b 2 9 b 2 9 a 1 8 b 2 7 b 2 7 a 1 6 b 2 5 b 2 5 a 1 gnd 4 b 2 3 b 2 3 a 1 2 b 2 1 b 2 1 a 1 v cc gnd 12 b 2 56-pin a 16 b 1 16 a 1 1 a 1 16 b 2 1 b 2 sel 1 b 1
2 ps8459d 03/13/01 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 PI3C16234 3.3v, high bandwidth, 16-bit to 32-bit mux/demux busswitch maximum ratings (above which the useful life may be impaired. for user guidelines, not tested.) storage temperature ....................................................... ?65c to +150c ambient temperature with power applied ....................... ?40c to +85c supply voltage range ....................................................... ?0.5v to +4.6v dc i/o voltage ................................................................... ?0.5v to +5.5v dc output current ......................................................................... 120ma 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 indi- cated in the operational sections of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect reliability. dc electrical characteristics (over the operating range t a = ?40oc to 85oc v cc = 3.3v 10%) parameters description test conditions (1) min. typ (1) max. units v ih input high voltage guaranteed logic high level 2.0 ? ? v il input low voltage guaranteed logic low level ?0.5 ? 0.8 i ih input high current v cc = max., v in = v cc ??1 i il input low current v cc = max., v in = gnd ??1 i o b-port pulldown current v cc = min., v o = v cc 2.5 3.6 ? ma sel = high for b1, sel = low for b2 v ik clamp diode voltage v cc = min ., i in = ?18ma ? ?0.73 ?1.2 v cc = min., v in = 0.0v, ?912 i on = 48ma or 64ma v cc = min., v in = 2.4v, ?1623 i on =15ma v a capacitance (t a = 25c, f = 1 mhz) parameters (5) description test conditions typ. max. units c in input capacitance v in = 0v 3.5 ? pf c on a/b capacitance, switch on v in = 0v 9.3 11 pf 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 pins 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. r on switch on resistance (4) w
3 ps8459d 03/13/01 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 PI3C16234 3.3v, high bandwidth, 16-bit to 32-bit mux/demux busswitch 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. PI3C16234 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 0.5ns for 25pf 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. propagation al 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. 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 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 ?0 6 20 5 8 a i d 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 s v c c . x a m = v n i v 0 . 3 = ) 3 ( ?? 0 5 7 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 3 2 6 1 c 3 i p m o c . n i m. x a ms t i n u 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 ( a x b o t x b , x a o t x c l f p 0 5 = r l 0 0 5 = w ?0 5 . 0 s n t h z p t l z p e m i t e l b a n e s u b e b x a o t x b r o x c l f p 0 5 = r l 0 0 5 = w 0 0 5 = r w 5 . 15 . 6 t z h p t z l p e m i t e l b a s i d s u b e b x a o t x b r o x 5 . 15 . 5
4 ps8459d 03/13/01 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 PI3C16234 3.3v, high bandwidth, 16-bit to 32-bit mux/demux busswitch pericom semiconductor corporation 2380 bering drive ? san jose, ca 95131 ? 1-800-435-2336 ? fax (408) 435-1100 ? http://www.pericom.com 56-pin tssop (a) package .002 .006 seating plane .007 .011 .004 .008 1 56 .236 .244 0.50 0.17 0.27 0.05 0.15 0.09 0.20 x.xx x.xx denotes dimensions in millimeters .018 .030 0.45 0.75 .047 max. 1.20 6.0 6.2 .547 .555 13.9 14.1 .319 8.1 .0197 bsc bsc ordering information t r a pe g a k c a p - n i ph t d i we r u t a r e p m e t a 4 3 2 6 1 c 3 i p) 6 5 a ( p o s s t - 6 5l i m - 0 4 2c 5 8 + o t c 0 4 ?
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