1 ps7030a 11/25/96 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 product features: ? near-zero propagation delay ? low noise, 25ohm version (PI5C32390) ? 5ohm switches connect inputs to outputs (pi5c3390) ? direct bus connection when switches are on ? ultra-low quiescent power (0.2a typical) ? ideally suited for notebook applications ? packages available: ? 28-pin 150-mil wide plastic qsop (q) ? 28-pin 300-mil wide plastic soic (s) aen ben a sw b sw function h h off off disconnect l h on off a to c h l off on b to c l l on on a, b to c truth table (1) note: 1. h = high voltage level l = low voltage level product pin configuration logic block diagram product pin description pin name i/o description aen, ben i bus output enable (active low) a 0 - a7 i/o bus a b 0 -b 7 i/o bus b c0-c7 i/o bus c pi5c3390 PI5C32390 (25ohm) 16-to-8 multiplexer/demultiplexer busswitch product description: pericom semiconductor?s pi5c series of logic circuits are produced in the company?s advanced submicron cmos technology, achieving industry leading performance. the pi5c3390 and PI5C32390 are 16-to-8 multiplexer/ demultiplexer bus switches with a low on resistance allowing inputs to be connected directly to o utputs. the two enable inputs connect each of eight i/o to the common i/o pin. this multiplexer function can be used to select and route logic signals to form crossbar switches, isolate bus capacitance, or provide a zero delay switch connection. the bus switch creates no additional ground bounce noise or additional propagation delay. the PI5C32390 is designed with an internal 25ohm resistor reducing noise reflection in high-speed applications. aen a 7 a 0 c 7 c 0 ben b 7 b 0 v cc 128 a 7 b 0 227 b 7 c 0 326 c 7 a 1 425 a 6 b 1 524 b 6 c 1 623 c 6 a 2 722 a 5 b 2 821 b 5 c 2 920 c 5 a 3 10 19 b 3 11 c 3 12 aen 13 gnd 14 a 4 18 b 4 17 c 4 16 ben 15 a 0 28-pin q, s
2 ps7030a 11/25/96 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 pi5c3390/PI5C32390 6:8 multiplexer/demultiplexer 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 to ground potential (inputs & vcc 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 ............................................................................. 120 ma 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 maximum rating conditions for extended periods may affect reliability. dc electrical characteristics (over the operating range, t a = ?40c to +85c, v cc = 5v 5%) 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 ?0.5 ? 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 ozh high impedance output current 0 a, b, c v cc ??1a v ik clamp diode voltage v cc = min., i in = ?18 ma ?0.7 ?1.2 v i os short circuit current (3) a, b (c) = 0v, c (a, b) = v cc 100 ? ? ma v h input hysteresis at control pins ? 150 ? mv r on switch on resistance (4) v cc = min., v in = 0.0v, pi5c3390 ? 5 7 ohm i on = 48 ma PI5C32390 20 28 40 v cc = min., v in = 2.4v, pi5c3390 ? 10 15 ohm i on = 15 ma PI5C32390 20 35 48 capacitance (t a = 25c, f = 1 mhz) parameters (5) description test conditions typ units c in input capacitance v in = 0v 6 pf c off a/b capacitance, switch off v in = 0v 6 pf c on a/b capacitance, switch on v in = 0v 8 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 vcc = 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, b, and c pins at indicated current through the switch. on resistance is determined by the lower of the voltages on the two (a,b,c) pins. 5. this parameter is determined by device characterization but is not production tested.
pi5c3390/PI5C32390 16:8 multiplexer/demultiplexer busswitch 3 ps7030a 11/25/96 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 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 ? 0.2 30 a supply current ? i cc supply current per v cc = max. v in = 3.4v (3) ? ? 3.5 ma input @ ttl high i ccd supply current per v cc = max., ? ? 0.25 ma/ input per mhz (4) a, b, and c pins open mhz be = gnd 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 vcc = 5.0v, +25c ambient. 3. per ttl driven input (v in = 3.4v, control inputs only); a, b, and c pins do not contribute to icc. 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, b, and c inputs generate no significant ac or dc currents as they transition. this parameter is not tested, b ut is guaranteed by design. 5. values for these conditions are examples of the icc formula. these limits are guaranteed but not tested. pi5c3390 switching characteristics over operating range pi5c3390 com parameters description conditions (1) min. typ. max. unit t plh propagation delay (2,3) c l = 50 pf ? 0.25 ? n s t phl a, b to/from c r l = 500ohm t pzh bus enable time 1.5 ? 6.5 ns t pzl aen/ben to a, b, c t phz bus disable time 1.5 ? 5.5 ns t plz aen/ben to a, b, c 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 0.25 ns for 50 pf 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. propagatio nal 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 interact ion with the load on the driven side. PI5C32390 switching characteristics over operating range PI5C32390 com parameters description conditions (1) min. typ. max. unit t plh propagation delay (2,3) c l = 50 pf ? 1.25 ? n s t phl a, b to/from c r l = 500ohm t pzh bus enable time 1.5 ? 6.5 ns t pzl aen/ben to a, b, c t phz bus disable time 1.5 ? 5.5 ns t plz aen/ben to a, b, c pericom semiconductor corporation 2380 bering drive ? san jose, ca 95131 ? 1-800-435-2336 ? fax (408) 435-1100 ? http://www.pericom.com
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