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| PI3USB102E Datasheet, PDF (6/7 Pages) Pericom Semiconductor Corporation – USB 2.0 High-Speed (480 Mbps) Switch with 5V Protection | |||
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PI3USB102E
USB 2.0 High-Speed (480 Mbps) Switch with 5V Protection
Switching Waveforms
Input
2.5V
tPLH
Output
2.5V
2.5V
3.5V
1.5V
tPHL
2.5V
VOH
VOL
Voltage Waveforms Propagation Delay Times
SEL
tPZL
Waveform 1
tPZH
Waveform 2
1.25V
1.25V
tPLZ
VDD/2
tPHZ
VDD/2
VOL +0.3V
VOH â0.3V
2.5V
0V
VOH
VOL
VOH
VOL
Voltage Waveforms Enable and Disable Times
Overvoltage Protection Waveforms
5V
VOVP
Tr =75ns
Tf = 75ns
0
5V
VOVP
VDSW
Input Signal Appears At Y+/Y-
Tovp
0
Typical Output Response at M+/M- or D+/D-
The PI3USB102E offers over voltage protection for the Y+/Y- pins to protect from shorts to VBUS (5V). When the voltage on Y+/Y-
exceeds VOVP, the voltage at M+/M- and D+/D- is clamped to VDSW within the time TOVP. For rise time of 75 ns (as per USB1.1 and
USB2.0 low-speed specifications), TOVP is typically 40 ns. TOVP is smaller for faster risetimes. For example, TOVP is typically 20 ns
for rise time of 5 ns.
14-0135
6
08/05/14
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