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  1 www.pericom.com ps8162i 12/08/10 all trademarks are property of their respective owners. pi3b3245 block diagram a 7 a 0 b 7 b 0 be sw sw a a b be sw pin configuration 1 2 3 4 5 6 7 8 9 1 0 2 0 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 nc a 0 a 1 a 2 a 3 a 4 a 5 a 6 a 7 gnd vcc be b 0 b 1 b 2 b3 b 4 b5 b 6 b7 description pericom semiconductors pi3b3245 is a 3.3v 8-bit, 2-port bus switch designed with a low on-resistance (5-ohm) allowing in- puts to be connected directly to outputs. te bus switch creates no additional propagational delay or additional ground bounce noise. te switches are turned on by the bus enable (be) input signal. features ?? near-zero propagation delay ?? 5-ohm switches connect inputs to outputs ?? fast switching speed: 4.5ns (max.) ?? ultra-low quiescent power (0.2a typical) i deally suited for notebook applications ?? ttl-compatible control of inputs levels ?? esd protection (2kv human body model and 200v machine model) ?? packaging (pb-free & green): 2 0-pin qsop (q) 2 0-pin tssop (l) 2 0-pin soic (s) 3.3v, hot insertion, 8-bit, 2-port nanoswitch tm 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 function be a0-7 disconnect h hi-z connect l b0-7 note: h = high voltage level, l = low voltage level, hi-z = high impedance 10-0247
2 www.pericom.com ps8162i 12/08/10 all trademarks are property of their respective owners. pi3b3245 3.3v, hot insertion, 8-bit, 2-port nanoswitch tm 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 -0.5 4.6 v dc input voltage -0.5 4.6 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 = 3.3v 10%) 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 n , b n v cc 1 a v ik clamp diode voltage v cc = min., i in = C18 ma -1.2 v r on switch on resistance (3) v cc = min., v in = 0.0v, i on = 48ma or 64ma 5 8 v cc = min, v in = 2.4v, i on = 15ma 10 17 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 = 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. capacitance (t a = 25c, f = 1 mhz) parameters (1) description test conditions typ units c in input capacitance v in = 0v 3.0 pf c off a/b capacitance, switch of v in = 0v 8.0 pf c on a/b capacitance, switch on v in = 0v 16.0 pf notes: 1. tis parameter is determined by device characterization but is not production tested. 10-0247
3 www.pericom.com ps8162i 12/08/10 all trademarks are property of their respective owners. pi3b3245 3.3v, hot insertion, 8-bit, 2-port nanoswitch tm 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 per input high v cc = max. v in = 3.0v (3) 750 a 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 = 3.3v, +25c ambient. 3. per ttl driven input (control input only); a and b pins do not contribute to i cc . 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 cl = 50 pf rl = 500 0.25 ns t pzh t pzl bus enable time be to ax or bx 1.0 4.0 t phz t plz bus disable time be to ax or bx 1.0 4.5 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. applications information logic inputs te logic control inputs can be driven up to +3.6v regardless of the supply voltage. for example, given a + 3.3v supply, a n may be driven low to 0v and high to 3.6v. driving b n rail-to-rail? minimizes power consumption. power-supply sequencing and hot-plug information proper power-supply sequencing is recommended for all cmos devices. always apply v cc and gnd before applying signals to input/output or control pins. rail-to-rail is a registeredtrademark of nippon motorola, ltd. 10-0247
4 www.pericom.com ps8162i 12/08/10 all trademarks are property of their respective owners. pi3b3245 3.3v, hot insertion, 8-bit, 2-port nanoswitch tm packaging mechanical: 20-pin qsop (q) 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 packaging mechanical: 20-pin tssop (l) 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 10-0247
5 www.pericom.com ps8162i 12/08/10 all trademarks are property of their respective owners. pi3b3245 3.3v, hot insertion, 8-bit, 2-port nanoswitch tm pericom semiconductor corporation ? 1-800-435-2336 packaging mechanical: 20-pin soic (s) 1 seating plane .050 bsc 1 20 0-8? .2914 .2992 x.xx x.xx denotes controlling dimensions in millimeters 7.40 7.60 .496 .511 12.60 12.99 1.27 .0926 .1043 2.35 2.65 .394 .419 10.00 10.65 .0040 .0118 0.10 0.30 .013 .020 0.33 0.51 .010 .029 0.254 0.737 .0091 .0125 0.23 0.32 0.41 1.27 .016 .050 x 45? .020 .030 0.508 0.762 ref description: 20-pin, 300-mil wide, soic package code: s document control no. pd - 1006 revision: d date: 03/09/05 notes: 1) controlling dimensions in millimeters. 2) ref: jedec ms-013d/ac 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 pi3b3245qe q pb-free & green, 20-pin qsop PI3B3245LE l pb-free & green, 20-pin tssop pi3b3245se s pb-free & green, 20-pin soic notes: 1. thermal characteristics can be found on the company web site at www .pericom.com/packaging/ 2. e = pb-free and green 3. adding an x suffx = tape/reel 10-0247


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