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PI3USB42 Datasheet(PDF) 1 Page - Pericom Semiconductor Corporation |
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PI3USB42 Datasheet(HTML) 1 Page - Pericom Semiconductor Corporation |
1 / 7 page ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| USB2.0 High-Speed (480Mbps) Signal Switch With Vbus Short Protection 2011-11-0004 PT0378-1 8/26/11 1 PI3USB42 Features • USB 2.0 compliant (high speed and full speed) • RON is 4.0 typical @ VDD = 3.0V • Low bit-to-bit skew • Low Crosstalk: -41dB @ 240 MHz • Off Isolation: -37dB @ 240 MHz • Wide -3db bandwidth: 770MHz • Near-Zero propagation delay: 250ps • Support for 1.8V/2.5V/3.3V Logic on Control pins • Channel On Capacitance: 6.0pF • VDD Operating Range: 1.8V to 4.3V ±10% • Data pin I/O ESD: >8kV HBM protection per JESD22-A114D specification • I/O pins have over-voltage protection and can tolerate a short to Vbus • Packaging (Pb-free & Green): 10-pin UQFN (ZM10) Applications • Route signals for USB 2.0 • Cell phone, PDA, Digital camera and Notebook • LCD Monitor ,TV, Set-top box • Portable device Pin Description Pin No Pin Name Description 1 D+ USB Data bus 2 D- USB Data bus 3 GND Ground 4 D-A Multiplexed Source Inputs 5 D+A Multiplexed Source Inputs 6 D-B Multiplexed Source Inputs 7 D+B Multiplexed Source Inputs 8 /OE Switch Enable 9 VDD Positive Power Supply 10 SEL Switch Select Logic Function Table /OE SEL Function H X I/O’s = Hi-Z L L D(+/-) to D(+/-)A L H D(+/-) to D(+/-)B Description The PI3USB42 is a single differential channel 2:1 multiplexer/demultiplexer 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 PI3USB42 offers overvoltage protection per the USB2.0 specification. With the chip powered on or off, all I/O pins can withstand a short to Vbus (5V +/-10%). If VDD=0V, the I/Os can still have signals present, and the signal will NOT leak through to VDD. Functional Block Diagram D- SEL D-A D-B D+ /OE D+A D+B LOGIC Pin Assignment |
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