1 ps8420c 05/04/00 product description pericom semiconductor?s pi3b series of logic circuits are produced using the company?s advanced submicron cmos technology, achieving industry leading performance. the pi3b32160 is a 16-bit to 32-bit demultiplexer bus switch. industry leading advantages include a propagation delay of 250ps, resulting from 5 w channel resistance and low i/o capacitance. a port demultiplexes to either 1b and 2b or to both. the switch is bidirectional. application provides pci hot plugging logic inputs the logic cotrol inputs can be driven up to +3.6v regardless of the supply voltage. for example, given a +3.3v supply. in may be driven low to 0v and high to 3.6v. driving in rail-to-rail minimizes power consumption. power-supply sequencing and overvoltageprotection caution: do not exceed the absolute maximum ratings because stresses beyond the listed ratings may cause permanent damage to the device. proper power-supply sequencing is recommended for all cmos devices. always apply v cc before applying v bias and signals to the input/output pins. logic block diagram pin description product features ?r on is 5 w typical ? pullup on b1 and b2 ports ? low power: 50 m w typical ? industrial operation temperature: ?40oc to +85oc ? near zero propagation delay ? switching speed: 4.5ns max. ? channel on capacitance: 14pf max. ?v cc operating range: 3v to +3.6v ? package available: 56-pin tssop (a) n o i t c n u f1 l e s2 l e s 1 b n o t a nlh 2 b n o t a nhl 1 b n o t a n2 b n d n all , 1 b ns a i b v = 2 b nhh 11a 1b2 2b2 3a 3b2 4b2 5a 5b2 6b2 7a 7b2 8b2 gnd vcc 9a 9b2 10b2 11a 11b2 12b2 13a 13b2 14b2 15a 15b2 16b2 vbias2 sel2 1b1 2b1 2a 3b1 4b1 4a 5b1 6b1 6a 7b1 8b1 8a gnd vcc 9b1 10b1 10a 11b1 12b1 12a 13b1 14b1 14a 15b1 16b1 16a vbias1 sel1 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 56-pin a 16b2 sel1 16a 1a sel2 vbias2 vbias1 16b1 1b2 vbias2 vbias1 1b1 pi3b32160 3.3v, low capacitance 16-bit to 32-bit, demux pci hot plug bus switch with precharged outputs for live insertion 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012
2 ps8420c 05/04/00 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 pi3b32160 3.3v, low capacitance 16-bit to 32-bit, demux pci hot plug bus switch with precharged outputs for live insertion capacitance (t a = 25c, f = 1 mhz) parameters (5) description test conditions typ. max. units c in input capacitance v in = 0v 2.6 3.2 c off a capacitance, switch off v in = 0v 8.0 9.5 c off b capacitance, switch off v in = 0v 4.2 4.7 c on a/b capacitance, switch on v in = 0v 11 14 storage temperature............................................................ ?65c to +150c ambient temperature with power applied ........................... ?40c to +85c supply voltage to ground potential (inputs & v cc only) ... ?0.3v to +4.6v supply voltage to ground potential (outputs & d/o only) . ?0.5v to +4.6v dc input voltage ................................................................... ?0.5v to +4.6v dc output current .............................................................................. 120ma power dissipation ................................................................................... 0.5w note: stresses greater than those listed under maximum ratings may cause permanent damage to the de- vice. this is a stress rating only and functional opera- tion 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. dc electrical characteristics (over the operating range, t a = ?40c to +85c, v cc = 3.3v 10%, vbias = 1.3v to v cc ) parameters description test conditions (1) min. typ. (2) 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 a i ozh high impedance output current a = 0v or v cc max., vbias1 = vbias2 = v cc max. ? ? +1 v ik clamp diode voltage v cc = min., i in = ?18ma ? ?0.9 ?1.8 v r on switch on resistance (4) v cc = min., v in = 0.0v, ? 5 7 i on = 48ma v cc = min., v in = 2.4v, ? 9 15 i on = 15ma 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. maximum ratings (above which the useful life may be impaired. for user guidelines, not tested.) w pf v
3 ps8420c 05/04/00 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 pi3b32160 3.3v, low capacitance 16-bit to 32-bit, demux pci hot plug bus switch with precharged outputs for live insertion pi3b32160 com. parameters description conditions (1) min. typ. max. units t plh propagation delay (2,3) c l = 50pf ? 0.25 ? t phl a to b r l = 500 w t pzh bus enable time 1.3 ? 4.5 ns t pzl sel to a,b t phz bus disable time 1.3 ? 4.5 t plz sel to a,b 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 (v in = 3.0v, 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. 5. values for these conditions are examples of the i cc formula. these limits are guaranteed but not tested. 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 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 t he rise/ fall times of typical driving signals, it adds very little propagational delay to the system. propagational delay of the bus s witch 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 th e 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 m. p y t ) 2 ( . x a ms t i n u i c c r e w o p t n e c s e i u q t n e r r u c y l p p u s v c c . x a m =v n i v r o d n g = c c ?? 0 2a d i c c r e p t n e r r u c y l p p u s h g i h l t t @ t u p n i v c c . x a m = v n i v 0 . 3 = ) 3 ( v = n i p r e h t o c c d n g r o ?? 5 . 2a m i d c c r e p t n e r r u c y l p p u s z h m r e p t u p n i v c c , . x a m = n e p o s n i p b d n a 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 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
4 ps8420c 05/04/00 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 pi3b32160 3.3v, low capacitance 16-bit to 32-bit, demux pci hot plug bus switch with precharged outputs for live insertion pericom semiconductor corporation 2380 bering drive ? san jose, ca 95131 ? 1-800-435-2336 ? fax (408) 435-1100 ? http://www.pericom.com 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 0 6 1 2 3 b 3 i p) 6 5 a ( p o s s t - 6 5l i m - 0 4 2c o 5 8 + o t c o 0 4 ? .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 56-pin tssop (a) package applications information logic inputs the logic control inputs can be driven up to +3.6v regardless of the supply voltage. for example, given a +3.3v supply, in may be driven low to 0v and high to 3.6v. driving in rail-to-rail? minimizes power consumption. power-supply sequencing proper power-supply sequencing is recommended for all cmos devices. always apply v cc before applying signals to the bias voltage pin and the input/output or control pins. rail-to-rail is a registered trademark of nippon motorola, ltd
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