1 ps8361a 06/28/99 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 product features ?5 w switch connection between two ports ? near zero propagation delay ? -1.5v input undershoot protection ? fast switching speed: 5.0ns (max.) ? ultra -low quiescent power (70 m a typical) - ideal for notebook applications. ? industrial operating temperature: -40oc to 85oc ? package options: - 56-pin 240 mil wide plastic tssop(a) - 56-pin 300 mil wide plastic ssop (v) product description pericom semiconductors pi5c series of logic circuits are produced using the companys advanced submicron cmos technology. the PI5C16233C is a 16-bit to 32-bit mux/demux switch. this device can be used for memory bank interleaving. the PI5C16233C can be used as two 8-bit to 16-bit multiplexers or as one 16-bit to 32-bit multiplexer. two select inputs (sel1 and sel2) control the data flow. when the test inputs are asserted high, the a port is connected to both the b1 and the b2 ports. PI5C16233C 16-bit to 32-bit mux/demux busswitch with undershoot protection logic block diagram function table product pin configuration 56-pin a, v s t u p n i n o i t c n u f l e s ) 2 l e s / 1 l e s ( t s e t ll b , 1 b = a 2 z = hl b , 2 b = a 1 z = xh 2 b = a d n a 1 b = a
2 ps8361a 06/28/99 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 PI5C16233C 16-bit to 32-bit mux/demux busswitch with undershoot protection 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. 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. 4. this parameter is determined by device characterization but is not production tested. capacitance (t a = 25c, f = 1 mhz) parameters (4) description test conditions typ. units c in input capacitance v in = 0v 6 pf c on a/b capacitance, switch on v in = 0v 14 pf 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 range ........................................................ C0.5v to +7v dc input voltage ............................................................... C0.5v to +7v 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 = C40c to +85c, v cc = 4.5v to 5.5v) parameters description test conditions (1) min. typ. (2) max. units v ih input high voltage g uaranteed 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 1 a i il input low current v cc = max., v in = gnd 1 a i ozh high impedance output current 0 a, b v cc 1 a v ik clamp diode voltage v cc = min., i in = C18ma C0.7 C1.8 v r on switch on resistance (3) v cc = min., v in = 0.0v, i on = 48ma or 64ma 58 w v cc = 4.0v, v in = 2.4v, i on = 15ma 10 15
PI5C16233C 16-bit to 32-bit mux/demux busswitch with undershoot protection 3 ps8361a 06/28/99 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 com. parameters description conditions (1) min. max. units t plh propagation delay (2,3) 0.25 t phl ax to bx, bx to ax t pzh bus enable time c l = 50pf 0.5 5.2 ns t pzl sel to ax or bx r l = 500 w t phz bus disable time 0.5 5.3 t plz sel to ax or bx 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 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) input @ ttl high 2.5 ma 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 (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. 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 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 interaction with the load on the driven side. t r a pe g a k c a p - n i ph t d i w a c 3 3 2 6 1 c 5 i p) 6 5 a ( p o s s t - 6 5l i m - 0 4 2 v c 3 3 2 6 1 c 5 i p) 6 5 v ( p o s s - 6 5l i m - 0 0 3 ordering information
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