1 ps8690e 03/23/07 features ? r on is 4 typical ? low crosstalk: ?27db @ 250 mhz ? near-zero propagation delay: 250ps ? switching speed: 9ns ? channel on capacitance: 9pf (typical) ? v cc operating range: +3.0v to +3.6v ? >2kv esd protection (human body model) ? >350 mhz bandwidth (or data frequency) ? switching on data i/o ports (0 to 5v) ? i off supports partial-power-down mode operation ? data and control inputs have undershoot clamp diodes ? packaging (pb-free & green available) ? 16-pin 150-mil wide plastic qsop (q) ? 16-pin 173-mil wide plastic tssop (l) applications ? dual physical layer device sharing to one interface connector ? routes signals for 10/100 mbit ethernet description the pi3l110 is a 8- to 4-bit 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 fast ethernet transceiver (phy) device to one of two corresponding 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 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. the pi3l110 is fully speci ed for partial-power-down applications using i off . the i off feature ensures that damaging current will not back ow thoughout the device when it is powered down. the device has isolation during power off. block diagram pin con guration pi3l110 3.3v quad, 2:1 mux/demux fast ethernet lan switch w/ single enable v cc 1 s 16 e 2 i a 0 15 i d 0 3 i a 1 14 i d 1 4 y a 13 y d 5 i b 0 12 i c 0 6 i b 1 11 i c 1 7 y b 10 y c 8 gnd 9 e i a 0 i a 1 i b 0 i b 1 i c 0 i c 1 i d 0 i d 1 s y a y b y c y d 07-0076
2 ps8690e 03/23/07 pi3l110 3.3v quad, 2:1 mux/demux fast ethernet lan switch w/ single enable pin description pin name description i a n - i d n data inputs s select inputs e enable ya-yd data outputs gnd ground v cc power storage temperature ..................................................... ?65c to +150c supply voltage to ground potential ......................... ?0.5v to +4.0v dc input voltage ............................................................. ?0.5v to +5.5v dc output current ........................................................................ 120ma power dissipation ............................................................................ 0.5w note: stresses greater than those listed under max i mum rat ings may cause permanent damage to the de vice. this is a stress rating only and func tion al op er a tion of the device at these or any other conditions above those indicated in the operational sections of this spec i ca tion is not implied. ex- posure to absolute max i mum rating con di tions for extended periods may affect re li abil i ty. maximum ratings (above which useful life may be impaired. for user guide lines, not tested.) truth table (1) e s ya yb yc yd function h x hi-z hi-z hi-z hi-z disable ll i a 0i b 0i c 0i d 0 s = 0 lh i a 1i b 1i c 1i d 1 s = 1 note: 1. h = high voltage level l = low voltage level x = don't care dc electrical characteristics for 10/100 base-t ethernet switching over operating range (t a = ?40c to +85c, v cc = 3.3v 10%) parameter description test conditions (1) min. typ. (2) max. units v ih input high voltage guaranteed high level 2.0 v v il input low voltage guaranteed low level ?0.5 0.8 v ik clamp diode voltage v cc = max., i in = ?18ma ?0.7 ?1.2 i ih input high current v cc = max., v in = v cc 5 a i il input low current v cc = max., v in = gnd 5 a i off current while i/o disabled v cc = 0, v o = 0 to 5v 1 a r on switch on-resistance (3) v cc = min., 1.25v v in v cc, i in = ?10ma to ?30ma 4.0 8.0 r flat(on) on-resistance flatness (4) v cc = min., v in @ 1.25v and v cc, i in = ?10ma to ?30ma 1 ?r on on-resistance match from center ports to any other port (4) v cc = min., 1.25v v in v cc, i in = ?10ma to ?30ma 0.9 2.0 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 v cc = 3.3v, t a = 25c ambient and maximum loading. 3. measured by the voltage drop between i n and y n pins at indicated current through the switch. on-resistance is determined by the lower of the voltages on the two (i n & y n ) pins. 4. this parameter is determined by device characterization but is not production tested. 07-0076
3 ps8690e 03/23/07 pi3l110 3.3v quad, 2:1 mux/demux fast ethernet lan switch w/ single enable characteristics paramenter description test conditions min. typ. (1) max. units t pd propagation delay (2,3) 0.25 ns t pzh , t pzl line enable time - s or e to y n , i n 0.5 15 t phz , t plz line disable time - s to e to y n , i n 0.5 9 t sk(p) skew between opposite transitions of the same output (t phl - t plh ) (2) 0.1 0.2 power supply characteristics 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 v cc = 3.3v, t a = 25c ambient and maximum loading. 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. guaranteed by design. 3. 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 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. capacitance (t a = 25c, f = 1 mhz) parameters (1) description test conditions typ. max. units c in input capacitance v in = 0v 23 pf c off(in) port i n capacitance, switch off 4 6 c on y n /i n capacitance, switch on 9 10 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 800 a dynamic electrical characteristics over the operating range (t a = ?40c to +85c, v cc = 3.3v 10%, gnd = 0v) parameter description test conditions min. typ. max. units x talk crosstalk r l = 50, f = 250 mhz ?40 db o irr off isolation ?30 bw bandwidth ?3db r l = 50 350 mhz 07-0076
4 ps8690e 03/23/07 pi3l110 3.3v quad, 2:1 mux/demux fast ethernet lan switch w/ single enable 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, 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-ohm 200-ohm 6.0v pulse generator d.u.t v cc d.u.t t1 r1 s1 hp11667a 50-ohm 10pf hp4195a switch positions test switch t plz , t pzl 6.0v t phz , t pzh gnd prop delay open 07-0076
5 ps8690e 03/23/07 pi3l110 3.3v quad, 2:1 mux/demux fast ethernet lan switch w/ single enable switching waveforms pulse skew - t sk(p) voltage waveforms enable and disable times 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 the control inputs rail-to-rail ? minimizes power consumption. 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 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 s or e v ol 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 07-0076
6 ps8690e 03/23/07 pi3l110 3.3v quad, 2:1 mux/demux fast ethernet lan switch w/ single enable packaging mechanical: 16-pin qsop (q) packaging mechanical: 16-pin tssop (l) .189 .197 .053 .069 .004 .010 seating plane .025 bsc .00 .01 .228 .244 1 16 .150 .157 .016 .050 0 635 4.80 5.00 1.35 1.75 5.79 6.19 0.101 0.254 .008 .012 3.81 3.99 0.38 0.41 1.27 .008 0.203 .015 x 45 ref 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 .193 .201 .047 max. .002 .006 seating plane .0256 .018 .030 .252 bsc 1 16 .169 .177 0.05 0.15 6.4 0.45 0.75 4.3 4.5 1.20 4.9 5.1 .007 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 ordering information ordering code package code package description PI3L110Q q 16-pin 150-mil wide plastic qsop PI3L110Qe q pb-free & green, 16-pin 150-mil wide plastic qsop pi3l110l l 16-pin 173-mil wide plastic tssop pi3l110le l pb-free & green, 16-pin 173-mil wide plastic tssop pericom semiconductor corporation ? 1-800-435-2336 ? www.pericom.com 07-0076
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