Diodes Incorporated PI6CB33401 & PI6CB33402 PCIe Clock Buffers

Diodes Incorporated PI6CB33401 and PI6CB33402 4-Output PCIe Clock Buffers use a proprietary Phase-Locked Loop (PLL) design to achieve very low jitter. A low-jitter clock is an integrated circuit that produces a timing signal for use in synchronizing a system's operation. The jitter, or irregular time delay, meets Peripheral Component Interconnect Express Gen1/Gen2/Gen3/Gen4/Gen5 requirements. Other than PCIe 100MHz support, these devices also support Ethernet applications with 50MHz, 125MHz, and 133.33MHz via SMBus. On-chip termination can save 16 external resistors and make layout easier. The individual OE pin for each output provides easier power management.

Features

  • 3.3V supply voltage
  • High Speed Current Steering Logic (HCSL) input: 100MHz, also supports 50MHz, 125MHz or 133.33MHz via SMBus
  • 4x differential low-power HCSL outputs with on-chip termination
  • Default ZOUT = 100Ω (PI6CB33401) or 85Ω (PI6CB33402)
  • Spread spectrum tolerant
  • Individual output enable
  • Programmable slew rate and output amplitude for each output
  • Differential outputs are blocked until the PLL is locked
  • Strapping pins or SMBus for configuration
  • Differential output-to-output skew <50ps
  • Very low jitter outputs
    • Differential cycle-to-cycle jitter <50ps
    • PCIe Gen1/Gen2/Gen3/Gen4/Gen5 CC compliant
    • PCIe Gen 2 and 3 SRiS and SRnS compliant
  • Lead free and RoHS compliant
  • 32-lead 5mm ×5mm TQFN packaging
  • -40°C to +85°C operating temperature range

Block Diagram

Block Diagram - Diodes Incorporated PI6CB33401 & PI6CB33402 PCIe Clock Buffers
Publicado: 2020-01-13 | Actualizado: 2024-07-02