1 ps8491e 09/30/04 pin description pin name description ian-idn data inputs e enable ya-yd data outputs gnd ground v cc power vcc nc 1 e nc 2 id1 ia0 3 id0 ia1 4 yd ya 5 20 ib0 6 19 ic0 ib1 7 18 yc 8 17 16 gnd 15 14 13 yb 9 10 nc nc 12 11 nc ic1 block diagram truth table (1) e ya yb yc yd function h hi-z hi-z hi-z hi-z disable l ia0, ia1 ib0, ib2 ic0, ic1, id0, id1 enable note: 1. h = high voltage level, l = low voltage level pi5l102 compactpci ? hot swap pull-up switch features ? supports compactpci ? precharge voltage selection ? 3.3v/2.7k ? , 5v/1ohm line termination selection ? ultra-low quiescent current: 0.1a typical ? low on-resistance: 7 ? maximum ? single supply operation up to 6.2v 5% ? wide bandwidth data rates: >200 mbps ? mechanical relay replacement ? packaging (pb-free & green available): -compact 20-pin tssop (l) pin confguration e ia0 ia1 ib0 ib1 ic0 ic1 id0 id1 ya yb yc yd description the pi5l102l compactpci hot swap pull-up switch is a quad 1:2 multiplexer. it is designed to switch the 1v precharge bias voltage and 10k? pull-up resistor connected to the compactpci bus signals during hot swap. each switch can connect eight inputs (i an to i dn ) to a given pull-up voltage level. in addition, the pi5l102 can be used to select 2.7 k?/3.3v or 1.0 kohm/5v pull-ups for the system card pci signal lines. on resistance is a low 7? maximum and all eight switches are selected or disabled with a single cmos/ttl compatible signal. for general-purpose applications, the pi5l102 can replace me - chanical relays. in network systems, physical layer signals can be switched. to reduce the insertion loss, the pi5l102 can be powered by a 6.2v zener diode. compactpci? is a registered trademark of the pci industrial computer manufacturers group
2 ps8491e 09/30/04 pi5l102 compactpci ? hot swap pull-up switch dc electrical characteristics (over the operating range, t a = 0c to +70c, v cc = 6.2v, +5%, C 2% ) parameters description test conditions (1) min. typ (2) max. units v ih input high voltage guaranteed logic high level 2.4 v v il input low voltage guaranteed logic low level C0.5 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 ozh high impedance output current 0 a, b v cc 1 v ik clamp diode voltage v cc = min., i in = C18 ma C0.7 C1.2 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 maximum ratings (above which the useful life may be impaired. for user guidelines, not tested.) storage temperature .......................................................... C65c to +150c ambient temperature with power applied ............................. 0c to +70c supply voltage to ground potential (inputs & v cc only) ... C0.5v to +7.0v supply voltage to ground potential (outputs & d/o only) C0.5v to +7.0v dc input voltage ............................................................... ... C0.5v to +7.0v dc output current ............................................................... .............. 120ma power dissipation ............................................................... .................. 0.5w note: stresses greater than those listed under maximum ratings may cause permanent damage to the de - vice. this is a stress rating only and functional op - eration 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 reliability. 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 = 6.2v, t a = 25c ambient temperature. 3. not more than one output should be shorted at one time. duration of the test should not exceed one second. 4. measured by voltage drop between i and y pins at indicated current through the switch. on-resistance is determined by the lower of the voltages on the two (i,y) pins.
3 ps8491e 09/30/04 pi5l102 compactpci ? hot swap pull-up switch note: 1. this parameter is determined by device characterization, but not production tested. 2. switch on capacitance accounts for capacitance of both switch channels (i x0 & i x1 ) on at one time. 3. x = a, b, c, or d; n = 0 or 1 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 = 6.2v, t a = 25c ambient temperature. 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 specif ed frequency. the a and b inputs generate no signifcant ac or dc currents as they transition. this parameter is not tested, but is guaranteed by design. 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 @ ttl high v cc = 5.5v v in = 3.4v (3) 2.5 ma i ccd supply current per input per mhz (4) v cc = max., input pins open e = gnd control input toggling 50% duty cycle 0.25 ma/ mhz switching characteristics over operating range parameters description conditions (1) com. units min. typ max. t phz bus disable time e to y c l = 50 pf r l = 500 ? 0.5 6.0 ns t pzh bus enable time e to y 0.5 5.8 notes: 1. see test circuit and waveforms (figure 2). capacitance ( t a = 25c, f = 1 mhz) parameters description test conditions typ . max. units c in input capacitance v in = 0v 4 6 pf c off (yx) y x capacitance switch off 6 8 c off (ixn) i xn capacitance, switch off 6 8 c on(yx) (1, 2) yx capacitance, switch on 24 32
4 ps8491e 09/30/04 pi5l102 compactpci ? hot swap pull-up switch applications v cc bias voltage vs r on to keep r on to a minimum, it is recommended that the v cc voltage be increased to a voltage between +6.0v and +6.5v (see figure 5). the r on vs v in curve shows the effect of on-resistance and input voltage which is exponential. ideally an input voltage between 0.2v and 3.6v will keep r on in the fat part of the curve ( r on or fatness is ~2 ohm ). logic inputs the logic control inputs can be driven up to +5.5v regardless of the supply voltage. for example, given a +5.0v supply, e may be driven low to 0v and high to 5.5v. driving e 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. figure 1. v io voltage selection 2.7 k ? 1 k ? pi5al102 pullup required on each cpci line pi5al102 10 ? enable 3.3v pericom pci bridge pi7c7100 from cpci connector enable 5v 5v 3v v io v io figure 2. hot swap precharge voltage selection 1.0v precharge 10 ? pi5l102 10k ? resistors backplane hot swap connections e 10 ?
5 ps8491e 09/30/04 pi5l102 compactpci ? hot swap pull-up switch notes: 1. input control enable = low and input control disable = high 2. pulse generator for all pulses: rate - <1.0mhz; z out <50 t f , t r <2.5 ns. figure 3. switching time test circuits and waveforms pulse generator d.u.t. v in rt v out c l 500 ? 500 ? open 50pf v cc 6v t pzl control input 1.5v 0v 3v 1.5v 3v 0v 1.5v t plz v ol 3v 0v t pzh t phz 0.3v 0.3v output normally low output normally high switch switch gnd v oh enable disable enable and disable timing test circuits switch position test switch disable low enable low closed defnitions: c l = load capacitance: includes jig and probe capacitance. r t = termination resistance: should be equal to z out of the pulse generator figure 5. v cc bias current figure 4. line termination 100 ? 120 ? + v pi5l102 r 1ma v cc 6.2v zener
6 ps8491e 09/30/04 pi5l102 compactpci ? hot swap pull-up switch figure 6. r on vs input voltage over temperature (r on at vcc = 6.1v @ 75c) figure 7 r on vs input voltage (r on at v cc = 6.2v @ 25c) 0.000 6.000 0.000 20.00 e+00 2.000/div. 0.600v/div. v in 0.000 6.000 0.6000/div. v in = 4.5000v, r on = 14.3e+00, v on = 3.9569v v on r on 25?c 75?c 75?c 25?c r on v on 0.000 6.000 0.000 20.00 e+00 2.000/div. 0.600v/div. v in 0.000 6.000 0.6000/div. v in = 4.5000v, r on = 10.9e+00, v on = 4.0720v v on r on r on v on
7 ps8491e 09/30/04 pi5l102 compactpci ? hot swap pull-up switch .252 .260 .047 1.20 .002 .006 seating plane .0256 bsc .018 .030 .004 .008 .238 .269 1 20 .169 .177 x.xx x.xx denotes controlling dimensions in millimeters 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 packaging mechanical: 20-pin tssop (l) ordering information ordering code package code package description pi5l102l l 20-pin tssop PI5L102LE l pb-free & green, 20-pin tssop notes: 1. thermal characteristics can be found on the company web site at www .pericom.com/packaging/ pericom semiconductor corporation ? 1-800-435-2336 ? www.pericom.com
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