1 www.pericom.com ps7015f 10/12/10 all trademarks are property of their respective owners. pi5c3245 block diagram be a 7 a 0 b 7 b 0 pin configuration nc a0 a1 a2 a3 a4 a5 a6 a7 gnd 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 vcc be b0 b1 b2 b3 b4 b5 b6 b7 description pericom semiconductors pi5c3245 is a 8-bit, 2-port bus switch designed with a low on-resistance (5-ohm) allowing inputs to be connected directly to outputs. te bus switch creates no ad- ditional propagational delay or additional ground bounce noise. te switches are turned on by the bus enable (be) input signal. te pinout is compatible with pi74fct245t (octal bidirectional transceiver). features ? near-zero propagation delay ? 5-ohm switches connect inputs to outputs ? direct bus connection when switches are on ? ultra low quiescent power (0.2a typical) i deally suited for notebook applications ? pin compatible with 74 series 245 logic devices ? packaging (pb-free & green): 2 0-pin 173-mil wide plastic tssop (l) 2 0-pin 150-mil wide plastic qsop (q) 8-bit, 2-port bus switch pin description pin name description be bus enable input (active low) a0-7 bus a b0-7 bus b gnd ground v cc power truth table (1) function be a0-7 disconnect h hi-z connect l b0-7 note: 1. h = h igh voltage level l = l ow voltage level h i-z = high impedance 11-0008
2 www.pericom.com ps7015f 10/12/10 all trademarks are property of their respective owners. pi5c3245 8-bit, 2-port bus switch absolute maximum ratings parameter min. max. units storage temperature -65 150 o c ambient temperature with power applied -40 85 o c supply voltage to ground potential (inputs & vcc only) -0.5 7.0 v supply voltage to ground potential (outputs & d/o only) -0.5 7.0 v dc input voltage -0.5 7.0 v dc output current - 120 ma power dissipation - 0.5 w stress beyond those listed under absolute maximum ratings may cause permanent damage to the device. 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 -0.5 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 = -18ma -0.7 -1.2 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, i on = 48 ma 5 7 v cc = min, v in = 2.4v, i on = 15 ma 10 15 notes: 1. for max. or min. conditions, use appropriate value specifed 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 pin at indicated current through the switch. on resistance is determined by the lower of the voltages on the two (a,b) pins. capacitance (t a = 25c, f = 1 mhz) parameters (1) description test conditions typ units c in input capacitance v in = 0v 6 pf c off a/b capacitance, switch of v in = 0v 6 pf c on a/b capacitance, switch on v in = 0v 8 pf notes: 1. tis parameter is determined by device characterization but is not production tested. 11-0008
3 www.pericom.com ps7015f 10/12/10 all trademarks are property of their respective owners. pi5c3245 8-bit, 2-port bus switch power supply characteristics parameters description test conditions (1) min typ (2) max units i cc quiescent power supply current v cc = max. v in = gnd or v cc 0.1 3.0 a i cc supply current @ input high v cc = max. v in = 3.4v (3) 2.5 ma i ccd supply current per input per mhz (4) v cc = max. a and b pins open be = gnd control input toggling 50% duty cycle 0.25 ma/ mhz notes: 1. for max. or min. conditions, use appropriate value specifed 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 icc. 4. tis current applies to the control inputs only and represent the current required to switch internal capacitance at the specifed frequency. te a and b inputs generate no signifcant ac or dc currents as they transition. tis parameter is not tested, but is guaranteed by design. switching characteristics over operating range parameters description test conditions com. units min max t plh t phl propagation delay (1,2) ax to bx, bx to ax c l = 50 pf r l = 500 0.25 ns t pzh t pzl bus enable time be to ax or bx 1.5 6.5 t phz t plz bus disable time be to ax or bx 1.5 5.5 notes: 1. tis parameter is guaranteed but not tested on propagation delays. 2. te bus switch contributes no propagational delay other than the rc delay of the on-resistance of the switch and the load ca- pacitance. te 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. propagational 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. 11-0008
4 www.pericom.com ps7015f 10/12/10 all trademarks are property of their respective owners. pi5c3245 8-bit, 2-port bus switch packaging mechanical: 20-pin tssop (l20) 1 description: 20-pin, 173-mil wide, tssop package code: l document control no. pd - 1311 revision: e date: 03/09/05 pericom semiconductor corporation 3545 n. 1st street, san jose, ca 95134 1-800-435-2336 ? www.pericom.com .252 .260 .047 1.20 .002 .006 seating plane .0256 bsc .018 .030 .004 .008 .238 .269 1 20 .169 .177 0.05 0.15 6.1 6.7 0.45 0.75 0.09 0.20 4.3 4.5 6.4 6.6 0.65 0.19 0.30 .007 .012 max note: 1. package outline exclusive of mold flash and metal burr 2. controlling dimentions in millimeters 3. ref: jedec mo-153f/ac 11-0008
5 www.pericom.com ps7015f 10/12/10 all trademarks are property of their respective owners. pi5c3245 8-bit, 2-port bus switch pericom semiconductor corporation ? 1-800-435-2336 packaging mechanical: 20-pin qsop (q20) 1 .337 .344 .053 .069 .004 .010 seating plane .025 bsc .007 .010 .228 .244 .150 .157 1 20 x.xx x.xx denotes dimensions in millimeters 0.635 8.56 8.74 1.35 1.75 5.79 6.19 0.101 0.254 .008 .012 0.203 0.305 3.81 3.99 0.178 0.254 .058 1.47 .015 x 45? 0.38 ref detail a detail a .008 0.20 min. guage plane .010 0.254 .041 1.04 ref .016 .035 0.41 0.89 0?-6? .008 .013 0.20 0.33 description: 20-pin, 150-mil wide, qsop package code: q document control no. pd - 1202 revision: h date: 10/22/07 note: 1) controlling dimensions in inches. 2) ref: jedec mo-137b/ad 3) dimensions do not include mold flash, protrusions or gate burrs pericom semiconductor corporation 3545 n. 1st street, san jose, ca 95134 1-800-435-2335 ? www.pericom.com ordering information ordering code package code package type pi5c3245le l pb-free & green, 20-pin 173-mil wide plastic tssop pi5c3245qe q pb-free & green, 20-pin 150-mil wide plastic qsop 1. termal characteristics can be found on the company web site at www.pericom.com/packaging/ 11-0008
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