The RC19020 is a 20-output PCIe Gen6 buffer that is backward compatible with earlier PCIe generations. The RC19020 provides ultra-low additive jitter and reduced in-to-out delay performance for better design margin and incorporates several features for easier and more robust design.

RC19020 is also pin-compatible to DB2000Q/DB2000QL plus adding Loss-Of-Signal (LOS) indication and an SBI_OUT pin for multiple clock chip daisy-chain.


  • LP-HCSL outputs eliminate up to 80 terminated resistors
  • PCIe Gen 1–6 compliance
  • Drive both source-terminated and double-terminated loads
  • Selectable output slew rate via SMBus
  • Supports 85Ω output impedance
  • Open-drain LOS (Loss-Of-Signal) indication output
  • Power down tolerance (PDT)
  • Flexible startup sequencing (FSS)
  • Automatic clock parking (ACP)
  • Dedicated OE# pins to control group output
  • 4-wire Side-Band interface and device daisy-chaining 
  • SMBus write protection features with 9 selectable addresses
  • 6mm x 6mm 80-GQFN and 10mm x 10mm 72-VFQFPN packages




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