1 ps8421b 05/01/00 product description pericom semiconductor?s pi5c series of logic circuits are produced using the company?s advanced submicron cmos technology, achieving industry leading performance. the PI5C32161C is a 16- to 32-bit demultiplexer bus switch. it is intended for pci hot-plug applications. industry leading advantages include a propagation delay of 250ps, resulting from 5-ohm channel resistance, and low i/o capacitance. a port demultiplexes to either 1b and 2b or to both. the switch is bidirectional. precharge bias voltage is provided on b ports to minimize live insertion noise. the a port can handle up to ?2v undershoot during switch disable. application provides pci hot plugging logic block diagram pin description product features ?r on is 5 ohm typical ? precharge on b1 and b2 ports minimizes line insertion noise ? undershoot protection on a port only: ?2v ? low power: 70 m a typical ? industrial operation temperature: ?40oc to +85oc ? near zero propagation delay ? channel on capacitance: 15pf max. ?v cc operating range: +3.0v to +3.6v ? esd>2000v....human body model ? >100 mhz switching (enable clock rate) at 20pf load capacitance ? packages available: ? 56-pin plastic tssop (a) 1 1a 1b2 2b2 3a 3b2 4b2 5a 5b2 6b2 7a 7b2 8b2 gnd vcc 9a 9b2 10b2 11a 11b 2 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 PI5C32161C 16-bit to 32-bit, demux pci hot-plug bus switch with ?2v undershoot protection 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1 2345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012 12345678901 2 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 pullup 16b2 sel1 16a 1a sel2 vbias2 vbias1 pullup 16b1 pullup 1b2 vbias2 vbias1 pullup 1b1
PI5C32161C 16-bit to 32-bit, demux pci hot-plug bus switch with ?2v undershoot protection 2 ps8421b 07/07/00 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 dc electrical characteristics (over the operating range, t a = C40c to +85c, v cc = 5v 10%, v bias = 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 v il input low voltage guaranteed logic low level C0.5 0.8 v i ih input high current v cc = max., v in = v cc 1a i il input low current v cc = max., v in = gnd 1 a i oza high impedance output current a= 0v or v cc max., v bias 1 = v bias 2=v cc max. 1 a i ozb high impedence output current b= 0v or v cc max., v bias 1 = v bias 2=v cc max. C0.2 C2 ma v ik clamp diode voltage v cc = min., i in = C18ma C0.7 C1.8 v r on switch on resistance (4) v cc = min., v in = 0.0v, 5 8 w i on = 48ma v cc = min., v in = 2.4v, 10 15 w i on = 15ma storage temperature ............................................................. ?65c to +150c ambient temperature with power applied ............................. ?40c to +85c supply voltage to ground potential (inputs & v cc only) ...... ?0.5v to +7.0v supply voltage to ground potential (outputs & d/o only) .... ?0.5v to +7.0v dc input voltage ..................................................................... ?0.5v to +7.0v 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 indicated in the operational sections of this specification is not implied. exposure to absolute maxi- mum rating conditions for extended periods may affect reliability. maximum ratings (above which the useful life may be impaired. for user guidelines, not tested.) 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 n2 b nv = s a i b hh
PI5C32161C 16-bit to 32-bit, demux pci hot-plug bus switch with ?2v undershoot protection 3 ps8421b 07/07/00 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 PI5C32161C 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 10 ? 35 ns t pzl sel to a,b t phz bus disable time 1 ? 6 t plz sel to a,b power supply characteristics parameters description test conditions (1) min. typ (2) max. units i cc quiescent power v cc = max. v in = gnd or v cc 200 a supply current d i cc supply current per v cc = max. v in = 3.4v (3) 2.5 ma input @ ttl high other pin=v cc or gnd i ccd supply current per v cc = max., 0.25 ma/ input per mhz (4) a and b pins open mhz control input toggling 50% duty cycle 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 = 5.0v, +25c ambient. 3. per ttl driven input (v in = 3.4v, 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 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. 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 off a/b capacitance, switch off v in = 0v 4.5 pf c on a/b capacitance, switch on v in = 0v 13.5 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 = 5.0v, 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.
PI5C32161C 16-bit to 32-bit, demux pci hot-plug bus switch with ?2v undershoot protection 4 ps8421b 07/07/00 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 .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) pericom semiconductor corporation 2380 bering drive ? san jose, ca 95131 ? 1-800-435-2336 ? fax (408) 435-1100 ? http://www.pericom.com t r a pe g a k c a p - n i ph t d i w a c 1 6 1 2 3 c 5 i p) a ( p o s s t - 6 5l i m - 0 4 2 ordering information applications information logic inputs the logic control inputs can be driven up to +5.5v regardless of the supply voltage. for example, given a +5.0v supply, in may be driven low to 0v and high to 5.5v. 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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