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| PI3USB102_08 Datasheet, PDF (1/8 Pages) Pericom Semiconductor Corporation – USB 2.0 High-Speed (480 Mbps) Signal Switch Targeted for Battery Powered Applications | |||
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PI3USB102
USB 2.0 High-Speed (480 Mbps) Signal Switch
Targeted for Battery Powered Applications
Features
⢠USB 2.0 compliant (high speed and full speed)
⢠RON is 4.0Ω typical @ VDD = 3.0V
⢠Low bit-to-bit skew
⢠Low Crosstalk: â33dB @ 480 Mbps
⢠Off Isolation: â40dB @ 480 Mbps
⢠Near-Zero propagation delay: 250ps
⢠Switching speed: 9ns
⢠Channel On Capacitance: 5.5pF
⢠VDD 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 VDD
⢠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
speciï¬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 VDD 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
OE
Y+
Y-
SEL
Truth Table
SEL
OE
Y+
X
H
Hi-Z
L
L
M+
H
L
D+
Pin Description
M+
M-
D+
D-
Y-
Hi-Z
M-
D-
10 9 8
Y+
1
7 D+
Y-
2
6
D-
3 45
08-0310
1
PS8950C
11/20/08
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