Active port configuration switch for USB Type-C®, for devices with DisplayPort Sink or Branch function

The PS8742 addresses the high-speed signal switching requirements for implementation of a USB Type-C connector on a device that supports the VESA® DisplayPort Alt Mode Standard and includes a DisplayPort Branch or Sink function.  For devices that include a DisplayPort Source function, please refer to the PS8740.  The PS8742 includes redriver circuitry for the Super Speed USB and DisplayPort single paths to overcome signal loss in the switch and internal system interconnect.

PS8742 Block Diagram (rev 1)


  • Docking Stations
  • Personal Computer Monitors
  • TVs


  • Flexible USB Type-C switching supports all signaling combinations specified in USB Type-C and VESA DisplayPort Alt Mode Standards
  • Supports USB 3.1 Gen 1 data rate of 5Gbps, and DisplayPort data rates up to 5.4Gbps (HBR2)
  • Input equalizers on all inputs to overcome high speed signal loss in PCB trace and external cable
  • Active drivers on all outputs to assure reliable signal integrity
  • Automatic output driver adjustment for DisplayPort path utilizing field-proven AUX interception during link training (patented by Parade Technologies)
  • Switching modes are pin controllable through GPIO or I2C control
  • Ultra low standby power
  • Supports auto power saving for DisplayPort and USB
  • 4x6mm 40-pin QFN Halogen free RoHS package
  • Device power supply options:
    • PS8742A, dual supply:  3.3V and (1.2V or 1.35V)
    • PS8742B, single supply:  3.3V
  • ESD:  Human Body Mode at 8kV