1 ps8803a 06/08/10 features ? r on is 4? typical ? low bit-to-bit skew: 200ps ? low crosstalk: C35db @ 250mhz ? near-zero propagation delay: 250ps ? switching speed: 9ns ? channel on capacitance: 10pf (typical) ? status indicator leds switched with ethernet pairs ? v cc operating range: +3.0v to +3.6v ? enhanced esd protection: C 8kv (contact) (1) C switch pins: 1.1kv (machine model), 12kv (human body model) ? >550 mhz bandwidth (or data frequency) ? packaging: C pb-free and green, 56-contact tqfn (zf) applications ? dual physical layer device sharing to one interface connector ? routes signals for 10/100/1000 mbit ethernet description the pi3l500-a is a 8-channel 2:1 multiplexer/demultiplexer lan switch with hi-z outputs. industry leading advantages include a propagation delay of less than 250ps, resulting from its low channel resistance and i/o capacitance. the device multiplexes differential outputs from a gigabit ethernet transceiver (phy) device to one of two corresponding b1 or b2 outputs. the switch is bidirectional and offers little or no attenuation of the high-speed signals at the outputs. it is designed for low bit-to-bit skew, high channel-to- channel noise isolation and is compatible with various standards, such as 10/100/1000 base-t (ethernet). generally, this part can be used to replace mechanical relays in low-voltage lan applications that interface a physical layer over cat 5 or cat 6 unshielded twisted pair cable through an isolation transformer. note: 1. iec 61000-4-2 block diagram pin description pi3l500-a 3.3v, 8-channel, 2:1 mux/demux gigabit ethernet lan switch with single enable and enhanced esd protection gnd a 0 a 1 v cc n.c. gnd a 2 a 3 gnd v cc a 4 a 5 gnd a 6 a 7 gnd sel v cc led 0 led 1 0 b 1 1 b 1 0 b 2 1 b 2 gnd 2 b 1 3 b 1 2 b 2 3 b 2 gnd v cc 4 b 1 5 b 1 4 b 2 5 b 2 gnd 6 b 1 7 b 1 6 b 2 7 b 2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 v cc gnd led 2 gnd 2 led 1 2 led 2 v cc gnd gnd 0 led 1 1 led 1 gnd 0 led 2 1 led 2 v cc gnd 21 22 23 24 25 26 27 28 56 55 54 53 52 51 50 49 sel a 7 a 6 a 1 a 0 1 b 1 0 b 1 1 b 2 0 b 2 7 b 1 6 b 1 7 b 2 6 b 2 led x x led 1 x led 2 10-0178
2 ps8803a 06/08/10 pi3l500-a 3.3v, 8-channel, 2:1 mux/demux gigabit ethenet lan switch w/single enable and enhanced esd protection storage temperature ........................................................ C65c to +150c supply voltage to ground potential ........................... C0.5v to +4.0v dc input voltage ................................................................ C0.5v to +5.5v 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 reliability. maximum ratings (above which useful life may be impaired. for user guidelines, not tested.) pin description pin name description a x demux inputs x b y mux inputs led z led demux inputs z led y led mux inputs gnd ground v cc power sel select truth table sel function l a x to x b 1 ; led z to z led 1 h a x to x b 2 ; led z to z led 2 10-0178
3 ps8803a 06/08/10 pi3l500-a 3.3v, 8-channel, 2:1 mux/demux gigabit ethenet lan switch w/single enable and enhanced esd protection dc electrical characteristics for 1000 base-t ethernet switching over operating range (t a = C40c to +85c, v cc = 3.3v 10%) paramenter description test conditions (1) min. typ. (2) max. units v ih input high voltage guaranteed high level (control pins) 2.0 C C v v il input low voltage guaranteed low level (control pins) C0.5 C 0.8 v ik clamp diode voltage v cc = max., i in = C18ma C C0.7 C1.2 i ih input high current v cc = max., v in = v cc C C 5 a i il input low current v cc = max., v in = gnd C C 5 r on switch on-resistance (3) v cc = min., 1.5v v in v cc i in = C40ma C 4.0 6.5 r flat(on) on-resistance flatness (3) v cc = min., v in @ 1.5v and v cc i in = C40ma C 0.5 C r on on-resistance match from center ports to any other port (3) v cc = min., 1.5v v in v cc i in = C40ma C 0.4 1.0 dc electrical characteristics for 10/100 base-t ethernet switching over operating range (t a = C40c to +85c, v cc = 3.3v 10%) paramenter description test conditions (1) min. typ. (2) max. units v ih input high voltage guaranteed high level (control pins) 2.0 C C v v il input low voltage guaranteed low level (control pins) C0.5 C 0.8 v ik clamp diode voltage v cc = max., i in = C18ma C C0.7 C1.2 i ih input high current v cc = max., v in = v cc C C 5 a i il input low current v cc = max., v in = gnd C C 5 r on switch on-resistance (3) v cc = min., 1.25v v in v cc i in = C10ma to C30ma C 4.0 6.5 r flat(on) on-resistance flatness (3) v cc = min., v in @ 1.25v and v cc i in = C10ma to C30ma C 0.5 C ?r on on-resistance match from cen- ter ports to any other port (3) v cc = min., 1.25v v in v cc i in = C10ma to C30ma C 0.4 1.0 notes: 1. for max. or min. conditions, use appropriate value specifed under electrical characteristics for the applicable device type. 2. t ypical values are at v cc = 3.3v, t a = 25c ambient and maximum loading. 3. measured by the voltage drop between a and b pins at indicated current through the switch. on resistance is determined by the lower of the voltages on the two (a & b) pins. 4. this parameter is determined by device characterization but is not production tested. capacitance (t a = 25c, f = 1mhz) parameters (4) description test conditions (1) typ. max. units c in input capacitance v in = 0v 2.0 3.0 pf c off(b1, b2) port b capacitance, switch off 4.0 6.0 c on(a/b) a/b capacitance, switch on 10.0 11.0 10-0178
4 ps8803a 06/08/10 pi3l500-a 3.3v, 8-channel, 2:1 mux/demux gigabit ethenet lan switch w/single enable and enhanced esd protection notes: 1. for max. or min. conditions, use appropriate value specifed under electrical characteristics for the applicable device type. 2. t ypical values are at v cc = 3.3v, t a = 25c ambient and maximum loading.. 3. guaranteed by design. 4. 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 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 bus switch when used in a system is determined by the driving circuit on the driving side of the switch and its interactions with the load on the driven side. switching characteristics 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 0.5 3.5 ma dynamic electrical characteristics over the operating range (t a = C40c to +85c, v cc = 3.3v 10%, gnd = 0v) parameter description test conditions (1) min. typ. (2) max. units x talk crosstalk (3) r l = 100?, f = 250mhz C35 db o irr off isolation (3) C32 bw bandwidth C3db (3) r l = 100? 350 mhz paramenter description min. typ. (2) max. units t pd propagation delay (3,4) C 0.25 ns t pzh , t pzl line enable time - sel to a n , b n 0.5 C 15.0 t phz , t plz line disable time - sel to a n , b n 0.5 C 9.0 t sk(o) output skew between center port (a 4 to a 5 ) to any other port (3) C 0.1 0.2 t sk(p) skew between opposite transitions of the same output (t phl - t plh ) (3) C 0.1 0.2 10-0178
5 ps8803a 06/08/10 pi3l500-a 3.3v, 8-channel, 2:1 mux/demux gigabit ethenet lan switch w/single enable and enhanced esd protection 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 test circuit for dynamic electrical characteristics v cc d.u.t t1 r1 s1 hp11667a 50-ohm 10pf hp4195a switch positions test switch t plz , t pzl (output on b-side) 6.0v t phz , t pzh (output on b-side) gnd prop delay open r t 10pf c l v cc v in v out 200-ohm 200-ohm 6.0v pulse generator d.u.t 10-0178
6 ps8803a 06/08/10 pi3l500-a 3.3v, 8-channel, 2:1 mux/demux gigabit ethenet lan switch w/single enable and enhanced esd protection voltage waveforms propagation delay times switching waveforms output skew - t sk(o) pulse skew - t sk(p) voltage waveforms enable and disable times data in data out at channel x data out at channel y t plhx t phlx 3.5v 2.5v 2.5v 2.5v i t sk(o) = i t plhy ? t plhx i or i t phly ? t phlx i t sk(o) t plhy t phly v oh v ol v ol v oh 1.5v input output t plh t sk(p) = i t phl ? t plh i t phl 3.5v 2.5v 2.5v v ol v oh 1.5v t plz 1.25v 1.25v 2.5v v oh 0v v ol v dd/2 v dd/2 t phz t pzl t pzh output output v ol +0.3v v oh ?0.3v v ol v oh sel applications information logic inputs the logic control inputs can be driven up to +3.6v regardless of the supply voltage. for example, given a +3.3v supply, the output enables or select pins may be driven low to 0v and high to 3.6v. driving in rail-to-rail? minimizes power consumption. power-supply sequencing proper power-supply sequencing is advised for all cmos devices. 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 input t plh 2.5v 2.5v 2.5v 2.5v t phl 3.5v 1.5v output v oh v ol notes: w aveform 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 mhz, z o = 50, t r 2.5ns, t f 2.5ns. the outputs are measured one at a time with one transition per measurement. 10-0178
7 ps8803a 06/08/10 pi3l500-a 3.3v, 8-channel, 2:1 mux/demux gigabit ethenet lan switch w/single enable and enhanced esd protection packaging mechanical: 56-contact tqfn (zf) 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/ add 'x' for tape and reel ordering information ordering number package code package description pi3l500-azfe zf pb-free & green, 56-contact tqfn 10-0178
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