PCI Express® Gen 3 and SATA Bidirectional Redriver

PS8558 is bidirectional signal redriver that supports both PCI Express Gen 3, with data rates up to 8.0 GT/s, and SATA, with rates up to 6 Gb/s.  The PS8558 operates with a single 3.3V power supply.  In a typically application, the PS8558 is placed close to the PCIe® or SATA connector to compensate for board losses and regenerate high-quality electrical signals for improved link reliability.

PS8558 block

Key Features

  • Supports PCIe operation at 2.5GT/s, 5.0GT/s, and 8.0GT/s
  • Supports serial-ATA (SATA) operation at 1.5Gbps, 3.0Gbps and 6.0Gbps
  • Selectable PCIe or SATA operating mode
  • Supports SATA Out-of-Band (OOB) Signaling with fast OOB enter/exit time
  • Configurable equalization of up to 20dB to compensate for pre-channel signal loss
  • Configurable output de-emphasis up to 7.5 dB
  • Pin based device configuration and control
  • Low power consumption
  • Automatic power saving mode with inactive inputs
  • Automatic output squelch function
  • Integrated 85Ω input and output termination
  • Single 3.3V supply
  • 4x4mm 24-pin TQFN Halogen free RoHS Package
  • 0°C to 85°C Operating Temperature
  • ESD: Human Body Model at 6 kV


  • Desktop and laptop computers
  • Docking stations
  • Servers
  • Workstations