Diodes Incorporated
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USB 3.2 Gen 2/Display Port 1.4 Crossbar Switch for Type-C


The PI3USB31531 is a 6:4 differential channel bidirectional Crossbar switch solution for switching USB3.1 Gen1/Gen2 (-3db @ 10Gb/s) and/or DP1.2/DP1.4 (-3.7db @ 8Gb/s) signals through USB3.0 Type-C connector.

It multiplexes either one lane of USB3.1 Gen1/Gen2, one lane of USB3.1 Gen1/Gen2 and two channels of DP1.2/1.4, or four channels of DP1.2/DP1.4 to the USB Type-C connector.

In addition, AUX+/- channels are also multiplexed to the Type-C connector. PI3USB31531 offers excellent signal integrity for high-speed signals and low power dissipation. Insertion loss is -3dB, and return loss is -15dB (TBD) at 10Gb/s speed of USB3.1.


  • Six Differential Channels to 2/4 Differential Channel Crossbar Switch
  • Support Pin Assignment C, D, E for Sink
  • USB 3.1 Gen2 10Gb/s (-3db) Super Speed and DP 1.4 8Gb/s (-3.7db) Switching to USB Type-C Connector
  • I2C Control to Configure the Mux
  • Low Insertion Loss: -3dB @ 10Gb/s
  • Return Loss: -8dB @ 10Gb/s
  • CrossTalk: -53dB @ 10Gb/s
  • Off Isolation: -31dB @ 10Gb/s
  • -3dB Bandwidth : 6GHz
  • Multiplexes one of the Following to USB Type-C Connector:

USB3.1 Gen1/Gen2 Signal Only

One Lane of USB3.1 Gen1/Gen2 Signal and Two Channels of DP1.2/DP1.4 or 4 Channels of DP1.2 DP1.4 Signal

  • With DP1.2/DP1.4 Operating, AUX+ and AUX- are Muxed to SBU Pins; Max Swing on SBU Pins are from -0.35V to 3.95V
  • 3.0V to 3.6V Power Supply
  • Industrial Temperature Range: -40°C to 85°C


  • Routing USB3.1 Gen1/Gen2 SuperSpeed and DP1.2/DP1.4 Signals Through the USB Type-C Connector
  • Intended for Sink Applications such as Monitor

Product Specifications

Product Parameters

Compliance(Only Automotive supports PPAP) Standard
Analog or Digital? Analog
Configuration 6:4/4:6 Differential Channel Crossbar Mux/DeMux
Differential Channels 4
HotInsertion N/A
Lanes 1
OtherFeatures N/A
Rail-to-Rail N/A
Signal Type Differential
Single Ended Channels N/A
Type Mux, DeMux
Voltage 3.3

Technical Documents

Recommended Soldering Techniques


Additional Technical Documents are available upon request: 
Application information, Evaluation board, and Other technical documents

Request Documents


Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2672 2024-03-11 2024-09-07 Device End of Life (EOL)