1

PS8950C

11/20/08

Features

• USB 2.0 compliant (high speed and full speed)

• 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

• 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

• 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

outputsfromaUSBHostdevicetooneoftwocorrespondingoutputs.

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

specification. With the chip powered on or off, all I/O pins can

withstand a short to Vbus (5V +/-10%). This feature can only be

to the power supply.

In situations whereVbus 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-

1

2

7

6

8

D+

Y+

3

4

5

9

10

D-

Y-

08-0310