2.5 Gbps/5.0 Gbps/8.0 Gbps 8 Channel PCI Express Repeater w/ Equalization & De-Emphasis - DS80PCI800


2.5 Gbps/5.0 Gbps/8.0 Gbps 8 Channel PCI Express Repeater w/ Equalization & De-Emphasis

Recommended alternative parts


The DS80PCI800 is a low power, 8 channel repeater with 4-stage input equalization, and output de-emphasis driver to enhance the reach of PCI express serial links in board-to-board or cable interconnects. Ideal for higher density x8 and x16 PCI express configurations, the DS80PCI800 automatically detects and adapts to Gen-1, Gen-2 and Gen-3 data rates for easy system upgrade.

Each channel supports seamless detection and management of the new Gen-3 transmit equalizer coefficients (FIR tap) handshake protocol and PCIe control signals such as transmit idle, beacon etc. without external system intervention. An automatic receive detection circuitry controls the input termination impedance based upon endpoint insertion (hot-plug events). These features guarantee PCIe interoperability at both the electrical and system level, while reducing design complexity.

Powered by National’s SiGe BiCMOS process, DS80PCI800 offers programmable transmit de-emphasis (up to 12 dB), transmit VOD (up to 1300 mVp-p) and receive equalization (up to 36 dB) to enable longer distance transmission in lossy copper cables (10m+), or backplanes (40”+) with multiple connectors. The receiver is capable of opening an input eye that is completely closed due to inter-symbol interference (ISI) introduced by the interconnect medium.

The programmable settings can be applied easily via pins, software (SMBus/I2C) or loaded via an external EEPROM. When operating in the EEPROM mode, the configuration information is automatically loaded on power up, which eliminates the need for an external microprocessor or software driver.

With a low power consumption and control to turn-off unused channels, the DS80PCI800 is part of National's PowerWise family of energy efficient devices.


  • Comprehensive family, proven system inter-operability

  • DS80PCI102 : x1 PCIe Gen-1/2/3

  • DS80PCI402 : x4 PCIe Gen-1/2/3

  • DS80PCI800 : x8/x16 PCIe Gen-1/2/3
  • Automatic rate detect and adaptation to Gen-1/2/3 speeds
  • Seamless support for Gen-3 transmit FIR handshake
  • Rate adaptive receive EQ (up to 36 dB), transmit de-emphasis (up to 12 dB) only Gen-1/2
  • Adjustable Transmit VOD: 0.8 to 1.3 Vp-p (pin mode)
  • 0.2 UI of residual deterministic jitter at 8 Gbps after 40” of FR4 or 10m 30awg PCIe Cable
  • Low power dissipation with ability to turnoff unused channels: 65 mW/channel
  • Automatic receiver detect (hot-plug)
  • Multiple configuration modes: Pins/SMbus/Direct-EEPROM load
  • Flow-thru pinout: 54-pin LLP (10 mm x 5.5 mm, 0.5 mm pitch)
  • Single supply voltage: 2.5V or 3.3V (selectable)
  • 3 kV HBM ESD rating
  • −40 to 85°C operating temperature range

  • View more

    Parametrics Compare all products in Redriver/Repeater

    Input Compatibility
    Number of Channels (#)
    Approx. Price (US$)
    Operating Temperature Range (C)
    IN SigCon
    Output Compatibility
    SupplyVoltage (Volt)
    OUT SigCon
    DS80PCI800 DS80PCI102 DS80PCI402
    8     2     8    
    54WQFN     24WQFN     54WQFN    
    6.95 | 1ku     3.95 | 1ku     5.95 | 1ku    
    -40 to 85     -40 to 85     -40 to 85    
    EQ     EQ     EQ    
    DE     DE     DE    

    Featured tools and software

    Click Here