Diodes Incorporated
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5Gbps, USB3.1 GEN-1, 2-port, Mux/DeMux ReDriver

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Diodes' PI2EQX638 is a low power, high performance 5.0 Gbps 2-Port USB3.0 Mux/DeMux ReDriver™ designed specifically for the USB 3.0 protocol.

The device provides programmable equalization, swing and De-Emphasis to optimize performance over a variety of physical mediums by reducing Inter-Symbol Interference. PI2EQX638 supports two 100Ω Differential CML data I/O’s between the Protocol ASIC to a switch fabric, over cable, or to extend the signals across other distant data pathways on the user’s platform.

The integrated equalization circuitry provides flexibility with signal integrity of the signal before the ReDriver. A low-level input signal detection and output squelch function is provided for each channel. Each channel operates fully independently. The channels’ input signal level (on xI+/-) determines whether the output is active.

The PI2EQX638 also includes an adaptive power management feature to maximize battery life for power sensitive consumer devices.


  • USB 3.0 compatible
  • Full Compliancy to USB3.0 Super Speed Standard
  • 1 to 2 DeMux from host TX to device RX
  • 2 to 1 Mux from device TX to Host RX
  • Pin Adjustable Receiver Equalization
  • Pin Adjustable output swing
  • Pin Adjustable Output Emphasis
  • 100Ω Differential CML I/O’s
  • Input signal level detect and squelch for each channel
  • Automatic Receiver Detect


  • PC
  • Server
  • Storage
  • Cable
  • Infotainment

Product Specifications

Product Parameters

Compliance (Only Automotive supports PPAP) Standard
Channels 4 in/ 2 out, 2 in/4 out
Data Rate (Gbps) 5
Lanes/Ports 2 in/ 1 out, 1 in/2 out
Output Swing Max (mV) N/A
Programming Interface(s) Pinstrap

Technical Documents

Recommended Soldering Techniques


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

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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-2510 2021-02-26 2021-05-26 Qualified Additional A/T Sites, Fab Site and Data Sheet Change


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