Diodes Incorporated
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Dual SPST USB 2.0 Switch with VBUS Short Protection.

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Product Description

The PI3USB103 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 PI3USB103 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. If VDD = 0V, the I/Os can still have signals present, and the signal will NOT leak through to VDD.


  • USB 2.0 compliant (high speed and full speed)
  • RON is 3.0Ω typical @ VDD = 3.0V
  • Low bit-to-bit skew
  • Low Crosstalk: –33dB @ 480 Mbps
  • Off Isolation: –30dB @ 480 Mbps
  • Near-Zero propagation delay: 250ps
  • Channel On Capacitance: 6.0pF (typ)
  • VDD Operating Range: 3.0V to 3.6V
  • Data pin I/O ESD (pins 1, 2, 4, 5, 6, and 7): ±4kV contact per IEC61000-4-2 spec
  • -3dB BW of 1400MHz
  • I/O pins have over-voltage protection and can tolerate a short to Vbus
  • Packaging (Pb-free & Green): − 10-contact TQFN, 1.3mm x 1.6mm x 0.75mm (ZL10)


  • Routes signals for USB 2.0
  • Hand-held devices

Product Specifications

Product Parameters

Compliance(Only Automotive supports PPAP) Standard
Configuration SPDT or 1:2 DeMux or 2:1 Mux
Differential Channels 1
HotInsertion 1
Lanes N/A
OtherFeatures Support for MHL
RailToRail 1
Signal Type Differential and Single Ended
Single Ended Channels 2
Voltage 3.3

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