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Low Power 8-Output PCIe 5.0 Clock Generator With On-Chip Termination

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The PI6CG33802C is an 8-output, very-low-power PCIe Gen1/ Gen2/Gen3/Gen4/Gen5 clock generator. It uses a 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 32 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 requirements.
It also provides various options, such as different slew rate and amplitude through SMBUS, so users can easily configure
the device to get the optimized performance for their individual boards. The device also supports selectable spreadspectrum
options to reduce EMI for various applications.


  • 3.3V Supply Voltage
  • Crystal/CMOS Input: 25 MHz
  • Eight Differential Low-Power HCSL Outputs with On-Chip Termination
  • Default ZOUT = 85Ω
  • 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 <60ps
  • Very-Low Jitter Outputs
    - Differential Cycle-To-Cycle Jitter <50ps
    - PCIe Gen1/Gen2/Gen3/Gen4/Gen5 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-Q100/101/200, PPAP capable,
    and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative.
  • Packaging (Pb-free & Green): 48-lead 6mm × 6mm TQFN

Product Specifications

Product Parameters

Function Generator
Compliance Standard
Input Type(s) Crystal, CMOS
Jitter <0.15
Number of Outputs 8
Output Frequency 100
Output Type(s) Low Power HCSL
Skew 50
Supply Voltage 3.3
Temperature -40 to 85

Technical Documents

Application information

Recommended Soldering Techniques


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

Request Documents


Orderable Part Number Status Package Environmental Compliance Packing Buy from Distributor /
Contact Sales
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Qty. Carrier
PI6CG33802CZLIEX Active V-QFN6060-48 TPGP 3000 T&R


Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Digi-Key Electronics 3000 1/17/2021 Europe, Asia, North America Buy Now
Request Sample

Environmental Compliance Legend:
LFF: Pb-Free Finish and RoHS 5/6
TLFP: Totally Pb-Free Product and RoHS 6/6
LFGP: Pb-free Finish and Green Product, RoHS 5/6 and Halogen Free
TPGP: Totally Pb-Free and Green Product, RoHS 6/6 and Halogen Free
GREEN: Halogen-free and RoHS compliant
RoHS: RoHS compliant but NOT halogen-free