1 ps7022a 03/13/96 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 pi5c16209 pi5c162209 (25 w w w w w ) product description pericom sem iconductor?s pi5c series of logic circuits are pro duced using the company?s advanced 0.8 micron cmos technology. the pi5c16209 and pi5c162209 are 18-bit bus exchange switches designed with a low on resistance (5 w ) allowing inputs to be connected directly to outputs. this device operates as a 18-bit bus switch or a 9-bit exchanger, which provides data exchanging between the four signal ports via the data select pins (s0-s2). the pi5c162209 device has a built-in 25-ohm series resistor to reduce noise because of reflections, thus eliminating the need for an external terminating resistor. product features ? near-zero propagation delay ? 5w switches connect inputs to outputs ? direct bus connection when switches are on ? ultra-low quiescent power (0.2a typical) ? ideally suited for notebook applications ? industrial operating temperature: ?40c to +85c ? available packages: ? 48-pin 240-mil wide thin plastic tssop (a) ? 48-pin 300-mil wide plastic ssop (v) logic block diagram product pin configuration function s2 s1 s0 a1 a2 disconnect l llzz a1 to b1 l l h b1 z a1 to b2 l h l b2 z a2 to b1 l h h z b1 a2 to b2 h l l z b2 disconnect h l h z z a1 to b1, a2 to b2 h h l b1 b2 a1 to b2, a2 to b1 h h h b2 b1 truth table product pin description pin name i/o description s0-s2 i select inputs xax i/o bus a xb x i/o bus b note: 1. h = high voltage level l = low voltage level z = high impedance 1 a 1 1 b 1 1 a 2 1 b 2 flow control one of nine channels s 0 s 1 s 2 1 2 3 4 5 6 7 3 a 1 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 1 a 1 1 a 2 s 0 gnd 2 a 1 2 a 2 vcc 3 a 2 gnd 4 a 1 4 a 2 5 a 1 5 a 2 6 a 2 gnd 6 a 1 7 a 1 7 a 2 gnd 8 a 1 8 a 2 9 a 1 9 a 2 3 b 1 1 b 1 1 b 2 s 1 2 b 1 2 b 2 gnd 3 b 2 gnd 4 b 1 4 b 2 5 b 1 5 b 2 gnd 6 b 1 6 b 2 7 b 1 7 b 2 gnd 8 b 1 8 b 2 9 b 1 9 b 2 s 2 32 31 30 29 28 27 26 25 18-bit bus exchange switch
pi5c16209/162209 18-bit bus-exchange switch 2 ps7022a 03/13/96 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 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 .............................................................................. 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 condi- tions above those indicated in the operational sec- tions 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 = 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 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 ozh high impedance output current 0 a, b v cc 1a v ik clamp diode voltage v cc = min., i in = C18ma C0.7 C1.2 v i os short circuit current (3) a (b) = 0v, b (a) = 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, 16209 5 7 w i on = 48ma 162209 20 28 40 v cc = min., v in = 2.4v, 16209 10 15 w i on = 15ma 162209 20 35 48 capacitance (t a = 25c, f = 1 mhz) parameters (5) description test conditions typ max. 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 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. 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.)
pi5c16209/162209 18-bit bus-exchange switch 3 ps7022a 03/13/96 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 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 0.1 3.0 a supply current d i cc supply current per v cc = max. v in = 3.4v (3) 2.5 ma input @ ttl high i ccd supply current per v cc = max., 0.25 ma/ input per mhz (4) a and b pins open mhz sn = gnd control input toggling 50% duty cycle notes: 1. for conditions shown as max. or min., use appropriate value specified under electrical characteristics for the applicable dev ice. 2. typical values are at vcc = 5.0v, +25c ambient. 3. per ttl driven input (v in = 3.4v, control inputs only); a and b 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 and b inputs generate no significant ac or dc currents as they transition. this parameter is not tested, but i s guaranteed by design. pi5c16209 switching characteristics over operating range pi5c16209 com. parameters description conditions (1) min max units t plh propagation delay (2,3) c l = 50pf ? 0.25 t phl xax to xbx, xbx to xax r l = 500 w t pzh bus enable time 1.5 6.5 ns t pzl s to xax or xbx t phz bus disable time 1.5 5.5 t plz s to xax or xbx pi5c162209 switching characteristics over operating range pi5c162209 com. parameters description conditions (1) min max units t plh propagation delay (2,3) c l = 50pf ? 1.25 ns t phl xax to xbx, xbx to xax r l = 500 w t pzh bus enable time 1.5 6.5 ns t pzl s to xax or xbx t phz bus disable time 1.5 5.5 ns t plz s to xax or xbx 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 interact ion with the load on the driven side. pericom semiconductor corporation 2380 bering drive ? san jose, ca 95131 ? 1-800-435-2336 ? fax (408) 435-1100 ? http://www.pericom.com
|
