1 ps8192b 11/09/98 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 PI3B16209 pi3b162209 (25 w w w w w ) product description pericom semiconductors pi3b series of logic circuits are produced in the companys advanced 0.35 micron cmos technology. the PI3B16209 and pi3b162209 are 3.3 volt, 18-bit bus exchange switches designed with a low on resistance (5 w ) allowing inputs to be connected directly to outputs. the devices operate as an 18-bit bus switch or as a 9-bit exchanger, providing data exchange 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 resulting from reflections, thus eliminating the need for an external terminating resistor. product features ? near-zero propagation delay ?5 w switches connect inputs to outputs ? fast switching speed - 5ns (max.) ? operating range: 3.0v to 3.6v ? industrial operating temperature: C40c to +85c ? packages available: C 48-pin 240-mil wide thin plastic tssop (a) C 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 xbx 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 48-pin a, v 3.3v, 18-bit bus exchange switch
PI3B16209/162209 3.3v, 18-bit bus-exchange switch 2 ps8192b 11/09/98 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 capacitance (t a = 25c, f = 1 mhz) parameters (4) description test conditions typ units c in input capacitance v in = 0v 3 pf c off a/b capacitance, switch off v in = 0v 14 pf c on a/b capacitance, switch on v in = 0v 30 pf storage temperature ................................................................. C65c to +150c ambient temperature with power applied .................................. C0c to +85c supply voltage range .................................................................. C0.5v to +4.6v dc input voltage ......................................................................... C0.5v to +4.6v dc output current ................................................................................... 120 ma power dissipation ......................................................................................... 0.5w dc electrical characteristics (over the operating range, t a = C40c to +85c, v cc = 3.0v to 3.6v) 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 -0.7 C1.2 v r on switch on resistance (3) v cc = min., v in = 0.0v, 16209 5 8 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 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 = 3.3v, 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. maximum ratings (above which the useful life may be impaired. for user guidelines, not tested.) 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 opera- tional sections of this specification is not implied. exposure to absolute maximum ra ting conditions for extended periods may affect reliability.
PI3B16209/162209 3.3v, 18-bit bus-exchange switch 3 ps8192b 11/09/98 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 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 10 a supply current d i cc supply current per v cc = max. v in = 3.0v (3) 750 m a input @ ttl high i ccd supply current per v cc = max. 0.25 ma/ input per mhz (4) a and b 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 = 3.3v, +25c ambient. 3. per ttl driven input (control input 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 0.25 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. com. parameters description conditions (1) min. max. units t plh propagation delay (2,3) cl = 50pf 16209 0.25 t phl ax to bx, bx to ax rl = 500 w 162209 1.25 t pzh bus enable time cl = 50pf, r l = 500 w, 1 4.5 ns t pzl be to ax or bx r = 500 w t phz bus disable time 1 5 t plz be to ax or bx
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