1 ps7020e 05/02/07 truth table (1) function s0 s1 a0?5 b0?5 c0?5 disconnect h h hi-z hi-z hi-z connect a-b l l b0?5 a0?5 hi-z connect b-c h l hi-z c0?5 b0?5 connect c-a l h c0?5 hi-z a0?5 features: ? near-zero propagation delay ? 5-ohm switches connect inputs to outputs ? direct bus connection when switches are on ? ultra low quiescent power (0.2 a typical) ? ideally suited for notebook applications ? packaging (pb-free & green available): ? 24-pin 150-mil wide plastic qsop (q) ? 24-pin 300-mil wide plastic soic (s) pin con guration pin description pin name description s 0 , s 1 bus direction a 0?5 bus a b 0?5 bus b c 0?5 bus c nc no connect gnd ground v cc power pi5c3401 6-bit, 3-port bus exchange switch block diagram description: pericom semiconductor?s pi5c3401 is a 6-bit, 3-port bus exchange switch designed with a low on-resistance (5-ohm) allowing inputs to be connected directly to outputs. the bus switch creates no additional propagation delay or additional ground bounce noise. the switches are turned off by s 0 = h and s 1 = h. the a bus can be connected to b bus by s 0 = l and s 1 = l. the b bus can be connected to c bus by s 0 = h and s 1 = l. the c bus can be connected to a bus by s 0 = l and s 1 = h. note: 1. h = high voltage level, l = low voltage level, hi-z = high impedance b0 a0 c0 b5 a5 c5 decoder s0 s1 07-0127
pi5c3401 6-bit, 3-port bus exchange switch 2 ps7020e 05/02/07 maximum ratings (above which the useful life may be impaired. for user guidelines, not tested.) storage temperature ..........................................................?65c to +150c ambient temperature with power applied .........................?40c to +85c supply voltage to ground potential .....................................?0.5v to +7.0v dc input voltage ..................................................................?0.5v to +7.0v dc output current ............................................................................120 ma power dissipation .................................................................................0.5w note: stresses greater than those listed under maximum rat- ings may cause permanent damage to the device. this is a stress rating only and functional operation of the device at these or any other con di tions above those indicated in the operational sections of this spec i ca tion is not implied. ex- posure to absolute maximum rating conditions for extended periods may affect re li abil i ty. dc electrical characteristics (over the operating range, t a = ?40c to +85c, v cc = 5v 5%) parameters de scrip tion 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 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 i oz high impedance output current 0 a, b v cc 1 v ik clamp diode voltage v cc = min., i in = ?18 ma ?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 = 48ma 5 7 v cc = min., v in = 2.4v, i on = 15ma 10 15 capacitance (t a = 25c, f = 1 mhz) parameters (1) de scrip tion test conditions typ. max. units c in input capacitance v in = 0v 6 pf c off a/b capacitance, switch off 6 c on a/b capacitance, switch on 8 notes: 1. this parameter is determined by device characterization but is not production tested. notes: 1. for max. or min. conditions, use appropriate value speci ed 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. 07-0127
pi5c3401 6-bit, 3-port bus exchange switch 3 ps7020e 05/02/07 power supply characteristics parameters de scrip tion 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 @ ttl 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 speci ed 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 i cc . 4. this current applies to the control inputs only and represent the current required to switch internal capacitance at the speci ed frequency. the a and b inputs generate no signi cant ac or dc currents as they transition. this parameter is not tested, but is guaranteed by design. switching characteristics over operating range parameters de scrip tion conditions com. unit min. max. t plh t phl propagation delay (1,2) ax to bx, bx to cx or cx to ax c l = 50pf r l = 500-ohm 0.25 ns t s bus direction time s x to ax or bx or cx 1.5 6.5 notes: 1. this parameter is guaranteed but not tested on propagation delays. 2. the bus switch contributes no propagational delay other than the rc delay of the on-resistance of the switch and the load ca pacitance. the time constant for the switch alone is of the order of 0.25ns 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. 07-0127
pi5c3401 6-bit, 3-port bus exchange switch 4 ps7020e 05/02/07 packaging mechanical: 24-pin qsop (q) packaging mechanical: 24-pin soic (s) .337 .344 .053 .069 .004 .010 seating plane .025 typical .007 .010 .228 .244 1 24 .150 .157 .016 .050 x.xx x.xx denotes dimensions in millimeters 0.635 8.56 8.74 1.35 1.75 5.79 6.20 0.406 1.27 0.101 0.254 .008 .012 0.203 0.305 3.81 3.99 0.178 0.254 .033 0.84 0.38 .015 x 45? 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 seating plane .050 bsc 1 0-8? .2914 .2992 x.xx x.xx denotes dimensions in millimeters 7.40 7.60 .5985 .6141 15.20 15.60 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? 24 .021 .031 0.533 0.787 07-0127
pi5c3401 6-bit, 3-port bus exchange switch 5 ps7020e 05/02/07 pericom semiconductor corporation ? 1-800-435-2336 ? www.pericom.com ordering information ordering code package code package description pi5c3401s s 24-pin soic pi5c3401se s pb-free & green, 24-pin soic pi5c3401q q 24-pin qsop notes: ? thermal characteristics can be found on the company web site at www.pericom.com/packaging/ ? e = pb-free & green ? adding an x suf x = tape/reel 07-0127
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