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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.


  • PC
  • Server
  • Storage
  • Cable
  • Infotainment


  • 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

Product Specifications

Product Parameters

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

Request Documents
Orderable Part Number Status Package Environmental Compliance Packing Buy from Distributor /
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Request Samples
Qty. Carrier
PI2EQX638XUBEX Active X2-QFN2020-18 GREEN 3500 T&R Contact Sales Request Sample

Environmental Compliance Legend:
LFF: Pb-Free Finish and RoHS 5/6
TLFP: Totally Pb-Free Product and RoHS 6/6
LFGP: Pb-free Finish and Green Product, RoHS 5/6 and Halogen Free
TPGP: Totally Pb-Free and Green Product, RoHS 6/6 and Halogen Free
GREEN: Halogen-free and RoHS compliant
RoHS: RoHS compliant but NOT halogen-free