Diodes Incorporated
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Low Power 2-Output PCIe 6.0/5.0 Clock Generator With On-Chip Termination to support Zout=100 Ohm

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The DIODES PI6CG33201C is a 2-output very low power PCIe Gen1/Gen2/Gen3/Gen4/Gen5/Gen6 clock generator. It uses 25MHz crystal or CMOS reference as an input to generate the 100MHz low power differential HCSL outputs with on-chip terminations. The on-chip termination can save 8 external resistors and make layout easier. An additional buffered reference output is provided to serve as a low noise reference for other circuitry.

It uses Diodes' proprietary PLL design to achieve very low jitter that meets PCIe Gen1/Gen2/Gen3/Gen4/Gen5/Gen6 requirements. It also provides various options such as different slew rate and amplitude through SMBUS so that users can configure the device easily to get the optimized performance for their individual boards. The device also supports selectable spread-spectrum options to reduce EMI for various applications.


  • 3V Supply Voltage
  • Crystal/CMOS input: 25 MHz
  • 2 Differential low power HCSL outputs with on-chip termination
  • Default ZOUT = 100Ω
  • Individual output enable
  • Reference CMOS output
  • Programmable slew rate and output amplitude for each output
  • Differential outputs blocked until PLL is locked
  • Selectable 0%, -0.25% or -0.5% spread on differential outputs
  • 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/Gen6 Compliant
    • CMOS REFOUT Phase Jitter
      • < 0.3ps RMS, SSC off
      • < 1.5ps RMS, SSC on
    • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
    • Halogen and Antimony Free. “Green” Device (Note 3)
    • For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/
    • Packaging (Pb-free & Green):
      • 24-lead 4×4mm TQFN

Product Specifications

Product Parameters

Function Generator
Compliance(Only Automotive supports PPAP) Standard
Input Type(s) Crystal, CMOS
Additive Jitter (ps) <0.15
Number of Outputs 2
Maximum Output Frequency (MHz) 100
Output Type(s) Low Power HCSL
Skew (PS) 50
Supply Voltage (V) 3.3
Ambient or Junction Temperature (°C) -40 to 85

Technical Documents

SPICE/IBIS Model Documents

Application Information

Recommended Soldering Techniques


Additional Technical Documents are available upon request: 
Application information, Evaluation board, and Other technical documents

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