1 01/11/11 description pericom semiconductors pi3c3305 and pi3c3306 are 2.5 volt or 3.3 volt, 2-bit bus switches designed with fast individual enables. when enabled via the associated bus enable (be) pin, the a pin is directly connected to the b pin for that particular gate. the bus switch introduces no additional propagation delay or additional ground bounce noise. the pi3c3306 device has active low enables, and the pi3c3305 has active high enables. it is very useful in switching signals that have high bandwidth (>400 mhz). features ? near-zero propagation delay ? 5? switches connect inputs to outputs ? high bandwidth (>400 mhz) ? rail-to-rail, 3.3v or 2.5v switching ? 5v i/o t olerant ? 2.5v supply v oltage operation ? permits hot insertion ? packaging (pb-free & green): C 8-pin 173-mil wide plastic tssop C 8-pin 118-mil wide plastic msop applications ? high bandwidth data switching ? hot docking pi3c3305 block diagram pi3c3306 block diagram pi3c3305 pin confguration pi3c3306 8-pin confguration be1 a1 b1 gnd v cc be2 b2 a2 be1 a1 b1 gnd v cc be2 b2 a2 pin description pin name description ben switch enable (pi3c3305) ben switch enable (pi3c3306) a2-a1 bus a b2-b1 bus b v cc power gnd ground be1 a1 b1 be2 a2 b2 be1 a1 b1 be2 a2 b2 pi3c3306 10-contact confguration be2 b2 be1 gnd vcc a1 b1 gnd vcc a2 1 2 3 4 5 6 7 8 9 10 pi3c3305 pi3c3306 2.5v/3.3v, high-bandwidth, hot-insertion, 2-bit, 2-port bus switch w/ individual enables 11-0003
2 01/11/11 pi3c3305/pi3c3306 2.5v/3.3v, high bandwidth, hot-insertion, 2-bit, 2-port bus switch with individual enables maximum ratings (above which the useful life may be impaired. for user guidelines, not tested.) note: stresses greater than those listed under maximum ra t - 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 conditions above those indicated in the operational sections of this specifcation is not implied. exposure to absolute maximum rating conditions for ex- tended periods may affect reliability. storage temperature ............................................................ C65c to +150c ambient temperature with power applied ........................... C40c to +85c supply v oltage to ground potential ....................................... C0.5v to +4.6v dc input v oltage .................................................................... C0.5v to +5.5v dc output current ............................................................................... 120ma power dissipation ................................................................................... 0.5w 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 5.0 c on a/b capacitance, switch on 10.0 dc electrical characteristics (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 v oltage guaranteed logic high level 2.0 v v il input low v oltage 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 v oltage v cc = min., i in = C18ma C0.73 C 1.2 v r on switch on resistance (3) v cc = min., v in = 0.0v, i on = 48ma or 60ma 5 7 ? v cc = min., v in = 2.4v, i on = 15ma 8 15 notes: 1. this parameter is determined by device characterization but is not production tested. 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. truth table (1) pi3c3306 ben pi3c3305 ben an bn v cc function x x (2) hi-z hi-z gnd disconnect h l hi-z hi-z v cc disconnect l h bn an v cc connect notes: 1. h = high v oltage level; l = low v oltage level; hi-z = high impedance; x = dont care 2. a pull-up resistor should be provided for power-up protection. 11-0003
3 01/11/11 pi3c3305/pi3c3306 2.5v/3.3v, high bandwidth, hot-insertion, 2-bit, 2-port bus switch with individual enables 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 260 500 a i cc supply current per input high v cc = max. v in = 3.0v (3) 750 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 driven input (control input only); a and b pins do not contribute to i cc . notes: 1. see test circuit and waveforms. 2. this parameter is guaranteed but not tested on propagation delays. 3. the bus 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 50pf 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. switching characteristics over 2.5v operating range parameters description test conditions (1) 3305/3306 units com min. max. t plh t phl propagation delay (2, 3) a to b, b to a c l = 50pf r l = 500? 0.25 ns t pzh t pzl bus enable time c l = 50pf r l = 500? r = 500? 1.5 9.8 t phz t plz bus disable t ime 1.5 8.3 switching characteristics over 3.3v operating range parameters description test conditions (1) 3305/3306 units com min. max. t plh t phl propagation delay (2, 3) a to b, b to a c l = 50pf r l = 500? 0.25 ns t pzh t pzl bus enable time c l = 50pf r l = 500? r = 500? 1.5 6.5 t phz t plz bus disable t ime 1.5 5.5 notes: 1. see test circuit and waveforms. 2. this parameter is guaranteed but not tested on propagation delays. 3. the bus 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 50pf 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. 11-0003
4 01/11/11 pi3c3305/pi3c3306 2.5v/3.3v, high bandwidth, hot-insertion, 2-bit, 2-port bus switch with individual enables test circuits enable and disable timing switch position propagation delay pulse generator v in v cc v out r t 6v 500? 500? 50pf c l open d.u.t. same phase input translation output opposite phase input transistion 3v 1.5v 0v 1.5v 1.5v t plh t phl t plh t phl v oh v ol 1.5v 3v 1.5v 0v enable disable 1.6v control input output normally low output normally high t pzl t pzh switch switch gnd 3v 1.5v 1.5v 0v t plz t pzh 0.3v 0.3v 3v 1.5v 0v 3v v ol v oh 0v 1. input control enable = low input control device = high 2. pulse generator total pulses rate 1.0 mhz; z out 50-ohms; t r t f, 2.5ns test switch lvdeo /2: enable low 9 leoh +,+ 1 enable high 1 w3 open hqlwlq c l = load capacitance (includes jig and probe capacitance) 5 t = termination resistance (should be equal to = out of the pulse generator) 11-0003
5 01/11/11 pi3c3305/pi3c3306 2.5v/3.3v, high bandwidth, hot-insertion, 2-bit, 2-port bus switch with individual enables 4.0 2.0 0.0 0.0 1.0 2.0 3.0 4.0 5.0 v out , (v) v in , (v) v cc = 3.3v 3.1v 2.9v 2.7v 2.5v 2.3v 3.6v 3.8v 3.4v 3.2v 3.0v 2.8v output voltage vs. input voltage over various supply voltages output voltage vs. input voltage over various supply voltages application information logic inputs the logic control inpus can be driven up to +3.6v regardless of the supply voltage. for example, given a +3.3v supply , in may be driven low to 0v and high to 3.6v. driving in rail-torail ? minimizes power consumption. power-supply sequencing proper power -supply sequencing is advised for all cmos device s. it is recommended to always apply v cc before applying signals to the input/output or control pins. rail-to-rail is a registered trademark of nippon motorola, ltd. 11-0003
6 01/11/11 pi3c3305/pi3c3306 2.5v/3.3v, high bandwidth, hot-insertion, 2-bit, 2-port bus switch with individual enables packaging mechanical: 8-pin msop (u) packaging mechanical: 8-pin tssop (l) 15 ? max 15 ? max detail a detail a .112 .120 2.85 3.05 .114 .122 2.90 3.10 .114 .122 2.90 3.10 .010 0 ? - 6 ? 15? max. 15? max. 0.25 gauge plane .003 .012 .016 .028 .037 0.40 0.70 0.95 ref 0.07 0.30 .003 .012 0.07 0.30 11-0003
7 01/11/11 pi3c3305/pi3c3306 2.5v/3.3v, high bandwidth, hot-insertion, 2-bit, 2-port bus switch with individual enables pericom semiconductor corporation ? 1-800-435-2336 ? www .pericom.com notes: ? thermal characteristics can be found on the company web site at www.pericom.com/packaging/ ? e = pb-free & green ? adding an x suffx = t ape/reel ordering information ordering code package code description pi3c3305le l pb-free & green, 8-pin 173-mil wide plastic tssop PI3C3305UEX u pb-free & green, 8-pin 118-mil wide plastic msop t ape/reel pi3c3306le l pb-free & green, 8-pin 173-mil wide plastic tssop pi3c3306uex u pb-free & green, 8-pin 118-mil wide plastic msop t ape/reel packaging mechanical: 8-pin msop (zl) 1 description: 10-contact, thin fine pitch quad flat no-lead (tqfn) package code: zl (zl10) document control #: pd-2052 revision: c date: 01/12/09 09-0031 11-0003
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