1 ps8721c 05/10/06 pin description pin name description en x switch enable a 2 - a 1 a ports b 2 - b 1 b ports gnd ground v cc power pin confguration features ? near-zero propagation delay ? 5? switches connect inputs to outputs ? high signal passing bandwidth (500 mhz) ? beyond rail-to-rail switching ? 5v i/o tolerant with 3.3v supply in off and on state ? 2.5v and 3.3v supply voltage operation ? hot insertion capable ? industrial operating temperature: C40oc to +85oc ? 2kv esd protection (human body model) ? latch-up performance: >250ma per jesd17 ? packaging (pb-free & green available): C 8-pin tssop (l) block diagram low voltage, 5?, 2-channel 2-port nanoswitch ? notes: 1. h = high voltage level, l = low voltage level, hi-z = high-impedance description the PI3CH200 is a low voltage, 2-channel switch designed with fast individual enables. the switch introduces no additional propagation delay or additional ground bounce noise. the PI3CH200 device has active low enables. it is very useful in switching signals that have high bandwidth (500 mhz). applications ? high bandwidth data switching ? hot-docking ? analog signal switching ? differential signal switching PI3CH200 en 1 a 1 b 1 en 2 a 2 b 2 truth table (1) en x a x b x v cc function x hi-z hi-z gnd disconnect h hi-z hi-z v cc disconnect l bx ax v cc connect ?? ? ? ? ? ? ?? ? ? ?? ?? ? ? ? ? ? ? ? ? ? ? ? ? ? 06-0246
2 ps8721c 05/10/06 PI3CH200 low voltage, 5?, 2-channel 2-port nanoswitch ? storage temperature ................................................ C65c to +150c ambient temperature with power applied ............... C40c to +85c supply voltage to ground potential ........................... C0.5v to +4.6v dc input voltage ........................................................ C0.5v to +6.0v 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 conditions above those indicated in the operational sections of this specifcation is not implied. exposure to absolute maximum rating conditions for extended periods may affect re - liability. maximum ratings (above which the useful life may be impaired. for user guidelines, not tested.) dc electrical characteristics, 3.3v supply (over 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 v v il input low voltage guaranteed logic low level C0.5 0.8 v ik clamp diode voltage v cc = min., i in = C18ma C1.3 C1.8 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 ozh high-impedence current (3) 0 a, b v cc 1 r on switch on-resistance (4) v cc = min.,v in = 0.0v i on = C48ma or C64ma 4 6 ? v cc = min., v in = 3.6v, i on = C15ma 5 8 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. 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. 06-0246
3 ps8721c 05/10/06 PI3CH200 low voltage, 5?, 2-channel 2-port nanoswitch ? 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. notes: 1. this parameter is determined by device characterization but is not production tested. capacitance (t a = 25c f = 1 mhz) parameters (1) description test conditions typ. units c in input capacitance v in = 0v 3.5 pf c off a/b capacitance, switch off 3.5 c on a/b capacitance, switch on 7.0 power supply characteristics parameters description test conditions (1) min. typ. (2) max. units i cc quiescent power supply current v cc = 3.6v, v in = gnd or v cc 0.8 ma dc electrical characteristics, 2.5v supply (over operating range, t a = C40c to +85c, v cc = 2.5v 10%) parameters description test conditions (1) min. typ. (2) max. units v ih input high voltage guaranteed logic high level 1.8 v cc + 0.3 v v il inout low voltage guaranteed logic low level C0.3 0.8 v ik clamp diode voltage v cc = max., i in = C6ma C0.7 C1.8 i ih input high current v cc = max., v in = v cc 1 a iil input low current v cc = max., v in = gnd 1 i ozh high impedance current (3) 0 a, b v cc 1 r on switch on resistance (4) v cc = min., v in =0.0v, i on = C48ma 6 8 ? v cc = min., v in = 2.25v, i on = C15ma 7 14 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. 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. 06-0246
4 ps8721c 05/10/06 PI3CH200 low voltage, 5?, 2-channel 2-port nanoswitch ? switching characteristics over 2.5v operating range parameters description conditions (1) com. units min. max. t plh t phl propagation delay (2,3) ax to bx, bx to ax see test diagram 0.3 ns t pzh t pzl enable time enx to ax or bx see test diagram 1.5 15.0 t phz t plz disable time enx to ax or bx 1.5 12.0 switching characteristics over 3.3v operating range parameters description conditions (1) com. units min. typ. max. t plh t phl propagation delay (2,3) ax to bx, bx to ax see test diagram 0.3 ns t pzh t pzl enable time enx to ax or bx see test diagram 1.5 9.0 t phz t plz disable time enx to ax or bx 1.5 9.0 notes: 1. see test circuit and waveforms. 2. this parameter is guaranteed but not tested on propagation delays. 3. the 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 10pf 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 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. dynamic electrical characteristics over the operating range (t a = C 40o to +85o, v cc = 3.3v 10%) parameter description test condition min. typ. max. units x talk crosstalk see test diagram C 60 db o irr off-isolation see test diagram C 60 bw C 3db bandwidth see test diagram 200 500 mhz notes: 1. see test circuit and waveforms. 2. this parameter is guaranteed but not tested on propagation delays. 3. the 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 10pf 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 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. 06-0246
5 ps8721c 05/10/06 PI3CH200 low voltage, 5?, 2-channel 2-port nanoswitch ? test circuit for electrical characteristics notes: ? c l = load capacitance: includes jig and probe capacitance. ? r t = termination resistance: should be equal to z out of the pulse generator. ? waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. ? waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. ? all input impulses are supplied by generators having the following characteristics: prr 10 mhz, z o = 50-ohm, t r 2.5ns, t f 2.5ns. ? the outputs are measured one at a time with one transition per measurement. test circuit for dynamic electrical characteristics r t 10pf c l v cc v in v out 200 ? 200 ? 6.0v pulse generator d.u.t ? ?? ???? ? ?? ?? ?? ???????? ?? ? ?? ?? ??????? switch positions test switch t plz , t pzl 6.0v t phz , t pzh gnd prop delay open 06-0246
6 ps8721c 05/10/06 PI3CH200 low voltage, 5?, 2-channel 2-port nanoswitch ? switching waveforms pulse skew - t sk(p) voltage waveforms enable and disable times input t plh 2.5v 2.5v 2.5v 2.5v t phl 3.5v 1.5v output v oh v ol t plz 1.25v 1.25v 2.5v v oh 0v v dd/2 v dd/2 t phz t pzl t pzh output output v ol +0.3v v ol v oh v oh -0.3v enx v ol input output t plh t sk(p) = i t phl C t plh i t phl 3.5v 2.5v 2.5v v ol v oh 1.5v 06-0246
7 ps8721c 05/10/06 PI3CH200 low voltage, 5?, 2-channel 2-port nanoswitch ? applications information logic inputs the logic control inputs can be driven upto 3.6v regardless of the supply voltage. for example, given a +3.3v supply, en may be driven low to 0v and high to 3.6v. driving en rail-to-rail ? minimizes power consumption. power supply-sequencing proper power supply sequencing is recommended for all cmos devices. always apply v cc before applying signals to the input/ output or control pins. hot insertion for datacom and telecom applications that have ten or more volts passing through the backplane, a high voltage from the power supply may be seen at the device input pins during hot insertion. the pi3chxx devices have maximum limits of 6v and 120ma for 20ns. if the power is higher or applied for a longer time or repeatedly reaches the maximum limits, the devices can be damaged. rail-to-rail is a registered trademark of nippon motorola, ltd. packaging mechanical: 8-pin tssop (l) ? ??????????????????????????????????????? ???????????????? ???????????????????? ????????? ???????????? ??????????????? note: 1. package outline exclusive of mold flash and metal burr 2. controlling dimentions in millimeters 3. ref: jedec mo-153f/aa pericom semiconductor corporation 3545 n. 1st street, san jose, ca 95134 1-800-435-2335 ? www.pericom.com 06-0246
8 ps8721c 05/10/06 PI3CH200 low voltage, 5?, 2-channel 2-port nanoswitch ? ordering information ordering code packaging code package description PI3CH200l l 173-mil, 8-pin tssop PI3CH200le l pb-free & green, 173-mil, 8-pin tssop notes: ? thermal characteristics can be found on the company web site at www .pericom.com/packaging/ ? e = pb-free & green ? adding an x suffx = tape/reel pericom semiconductor corporation ? 1-800-435-2336 ? www.pericom.com 06-0246
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