PS8838USB-C 20Gbps Retiming Switch for Host Application with USB 3.2 Gen 2×1 and DP 2.1 UHBR20

The PS8838 addresses high-speed signal switching and signal integrity requirements for implementing a USB Type-C® (or USB-C®) connector on a USB host device that supports the VESA® DisplayPort™ Alt Mode Standard. The PS8838 is fully compliant with USB3.2 and DisplayPort version 2.1 specifications. It supports USB 3.2 transport data rates up to 10Gbit/sec (Gen 2) and DisplayPort data rates up to 20Gbit/sec (UHBR20). With the implementation of adaptive receiving equalization and transmitting output FFE, the PS8838 helps customers’ PCB designs meet compliance requirements and achieve robust performance in terms of signal integrity.

Key Features

  • Flexible USB Type-C switch for USB 3.2 Gen 2×1 and DisplayPort™ (DP) Version 2.1 Alternative Mode
  • Compliant to DisplayPort™ Standard Version 2.1
  • Retiming for DP2.1 up to 20Gbps for RBR / HBR / HBR2 / HBR3 / UHBR10 / UHBR13.5 / UHBR20 link rates
  • Supports the Retimer architecture of USB 3.2 specification
  • USB 3.2 Gen1 and Gen2 retiming
  • Supports DP LT-tunable PHY Retimer (LTTPR)
    ▪ Transparent mode
    ▪ Non-transparent mode
  • Supports DP 2.1 Advanced Link Power Management (ALPM)
  • Low power consumption
  • Supports modern standby power consumption
  • Built-in control logic for USB Type-C plug / un- plug normal and flip orientations
  • Supports C, D and E pin assignments defined by VESA Alt Mode Spec
  • Supports I2C slave up to 1 MHz
  • Adaptive CTLE and DFE equalizer to compensate for PCB, cable, and connector losses
  • 3.3V and 0.9V dual supply operation
  • 0° to 85°C  operating temperature range
  • 4.7×8.0mm 62-pin QFN package
  • ESD: HBM 5KV


  • Laptops and Desktop PCs
  • Docking