1 ps8950c 11/20/08 features ? usb 2.0 compliant (high speed and full speed) ? r on is 4.0 typical @ v dd = 3.0v ? low bit-to-bit skew ? low crosstalk: ?33db @ 480 mbps ? off isolation: ?40db @ 480 mbps ? near-zero propagation delay: 250ps ? switching speed: 9ns ? channel on capacitance: 5.5pf ? v dd operating range: 2.7v to 4.2v 10% ? data pin i/o esd: 8kv contact ? -0.5db bw of 300mhz ? i/o pins have over-voltage protection and can tolerate a short to vbus as long as resistor/diode is added between 3.3v power rail and pericom's v dd ? packaging (pb-free & green): 10-contact uqfn, 1.4mm x 1.8mm x 0.5mm (zme10) 10-contact tqfn, 1.3mm x 1.6mm x 0.75mm (zle10) application ? routes signals for usb 2.0 ? hand-held devices description the pi3usb102 is a single differential channel 2:1 multiplexer/de- multiplexer usb 2.0 switch. 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 usb host 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 high speed usb 2.0 (480 mb/s). the pi3usb102 offers over voltage protection per the usb 2.0 speci cation. with the chip powered on or off, all i/o pins can withstand a short to vbus (5v +/-10%). this feature can only be offered if a 100-ohm pull up resistor is placed between v dd pin to the power supply. in situations where vbus can be as high as 7v, pericom recommends changing the resistor value from 100ohm to 200ohm. pericom can still support over-voltage protection up to 7v, as long as the 200ohm resistor is present. block diagram pin description pi3usb102 usb 2.0 high-speed (480 mbps) signal switch targeted for battery powered applications truth table sel oe y+ y- x h hi-z hi-z ll m+ m- h l d+ d- sel y- y+ oe m+ m- d+ d- m+ g nd 1 2 7 6 8 sel v dd oe d + y+ m- 3 4 5 9 10 d- y- 08-0310
2 pi3usb102 usb 2.0 high-speed (480 mbps) signal switch targeted for battery powered applications ps8950c 11/20/08 dc electrical characteristics for usb 2.0 switching over operating range (t a = ?40c to +85c, v dd = 3.0 - 4.4v) parameter description test conditions (1) min. typ. (2) max. units v ih input high voltage guaranteed high level v dd = 4.2v 1.8 v v dd = 3.3v 1.6 v il input low voltage guaranteed high level 0.8 v ik clamp diode voltage v dd = max., i ik = ?18ma -1.2 i ih input high current v dd = max., v ih = vdd 5 ua i il input low current v dd = max., v il = gnd 5 r on switch on-resistance (3) v dd = min., -0.4v v input 1.0v , i on = ?40ma 4.0 5.0 r flat(on) on-resistance flatness (3) v dd = min., -0.4v v input 1.0v, i on = -40ma 1.5 r on on-resistance match from center ports to any other port (3) v dd = min., -0.4v v input 1.0v, i on = -40ma 0.9 2.0 i oz i/o leakage current when port is off v dd = 4.3v, v input = 0 to 3.6v, switch = off, oe = high 2 ua notes: 1. for max. or min. conditions, use appropriate value speci ed under electrical characteristics for the applicable device type. 2. v dd = 3.0 - 4.4v, t a = 25c ambient and maximum loading. 3. measured by the voltage drop between d and d n pin at indicated current through the switch on-resistance is determined by the lower of the voltages on the two (d, d n ) pins. storage temperature ......................................................?65c to +150c supply voltage to ground potential .................................?0.5v to +4.6v dc input voltage .................................................................?0.5v to +7v dc output current ........................................................................120ma power dissipation .............................................................................0.5w note: stresses greater than those listed under maximum ra tings 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 speci cation is not implied. ex- posure 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.) power supply characteristics (v dd = 3.0 - 4.4v) parameters description test conditions (1) min. typ. max. units i cc quiescent power supply current v dd = max., oe = gnd or v dd 1 ua v dd = max, v sel = 1.3v - 2.1v 15 ua notes: 1. for max. or min. conditions, use appropriate value speci ed under electrical characteristics for the applicable device type. 08-0310
3 pi3usb102 usb 2.0 high-speed (480 mbps) signal switch targeted for battery powered applications ps8950c 11/20/08 capacitance (t a = 25c, f = 1mhz) parameters (3) description test conditions (1) typ. (2) max. units c in input capacitance v sel = 0v 2.2 3.2 pf c off switch capacitance, switch off 2.4 3.4 c on switch capacitance, switch on 5.5 7.0 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 dd = 3.3v, t a = 25c ambient and maximum loading. 3. this parameter is determined by device characterization but is not production tested. dynamic electrical characteristics over the operating range parameters description test conditions min. typ. (2) max. units x talk crosstalk r l = 50 , f = 240 mhz ?35 db o irr off isolation ?40 bw ?3db bandwidth r l = 50 810 mhz bw ?0.5db bandwidth r l = 50 300 mhz switching characteristics parameters description test conditions (1) min. typ. max. units t pd propagation delay (2,3) see test circuit for electrical charac- teristics 0.25 ns t pzh , t pzl line enable time - sel, oe to d(+/-), m(+/-) 0.5 50 t phz , t plz line disable time - sel, oe to d(+/-), m(+/-) 0.5 9.0 t sk c-c output skew, channel-to-channel (2) 3.5 14 ps t skb-b output skew, bit-to-bit (opposite transition of the same output (t phl -t plh ) (2) 7.5 20 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 switch contributes no propagational delay other than the rc delay of the on-resistance of the switch and the load capaci tance. 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 interactions with the load on the driven side. 08-0310
4 pi3usb102 usb 2.0 high-speed (480 mbps) signal switch targeted for battery powered applications ps8950c 11/20/08 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 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 on transition per measurement. test circuit for dynamic electrical characteristics switch positions test switch t plz , t pzl 6.0v t phz , t pzh gnd prop delay open pulse generator v sel r t v dd d.u.t. v out 6.0v 200-ohm 10pf c v cc pi3usb102 t1 r1 s1 hp11667a hp4396b 08-0310
5 pi3usb102 usb 2.0 high-speed (480 mbps) signal switch targeted for battery powered applications ps8950c 11/20/08 voltage waveforms propagation delay times switching waveforms 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 in rail-to-rail? minimizes power consumption. power supply sequencing proper power supply sequencing is recommended for all cmos devices. always apply v dd and gnd before applying signals to input/output or control pins. rail-to-rail is a registered trademark of nippon motorola, ltd. 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 waveform 1 waveform 2 v ol +0.3v v oh ?0.3v v ol v oh sel input t plh 2.5v 2.5v 2.5v 2.5v t phl 3.5v 1.5v output v oh v ol 08-0310
6 pi3usb102 usb 2.0 high-speed (480 mbps) signal switch targeted for battery powered applications ps8950c 11/20/08 eye diagram measurements figure 1: usb2.0 high-speed (480 mbps) signal integrity test setup figure 2: usb 2.0 high speed (480mbps) tp1, left eye, and tp5, right eye, with pi3usb102 in the signal path while hdd is driving. lr sw 1 tps rt1 2.25" on tp1 pi3usb102 0.5? 45ohm rt2 45ohm 2 08-0310
7 pi3usb102 usb 2.0 high-speed (480 mbps) signal switch targeted for battery powered applications ps8950c 11/20/08 description: 10-contact, thin fine pitch quad flat no-lead (tqfn) package code: zl (zl10) document control #: pd-2052 revision: b notes: 1) all dimensions are in millimeters 2) ref jedec: mo-220 date: 03/14/08 packaging mechanicals: 10-contact tqfn (zl10) 08-0310
8 pi3usb102 usb 2.0 high-speed (480 mbps) signal switch targeted for battery powered applications ps8950c 11/20/08 ordering information ordering code package code package description top mark pi3usb102zle zl pb-free & green, 10-contact tqfn xd PI3USB102ZME zm pb-free & green, 10-contact uqfn xd notes: ? thermal characteristics can be found on the company web site at www.pericom.com/packaging/ ? e = pb-free and green ? adding x suf x = tape/reel pericom semiconductor corporation ? 1-800-435-2336 ? www.pericom.com packaging mechanicals: 10-contact tuqfn (zm10) 4 ) 1 / 06-0823 08-0310
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