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Very Low Power 5-Output PCIe Fanout Buffer With On-chip Termination

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The PI6CBF18501 is a 5-output, very low power PCIe Gen1/Gen2/Gen3/Gen4 clock buffer. The device takes a reference input to fanout 100MHz low power differential HCSL outputs with on-chip terminations. The on-chip termination saves 24 external resistors and makes layout easier. Individual OE pins for each output provides
easier power management. The device uses Diodes' proprietary design to achieve very low jitter that meets PCIe Gen1/Gen2/Gen3/Gen4 requirements. It provides various advanced options, such as different slew rates
and amplitudes through SMBus so users can easily configure the device to achieve the optimized performance for their individual boards.


  • 1.8V supply voltage
  • HCSL input
  • 5-differential low power HCSL outputs with on-chip termination
  • Individual output enable
  • Programmable slew rate and output amplitude for each output
    through SMBus
  • 3.3V tolerant SMBus interface support
  • Very low jitter outputs
    • Differential cycle-to-cycle jitter <50ps
    • Differential output-to-output skew <50ps
    • PCIe Gen1/Gen2/Gen3/Gen4 compliant
  • Support industrial temperature range: -40C to 85C
  • Totally Lead-Free & Fully RoHS Compliant 
  • Halogen- and Antimony-Free. “Green” Device 
    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)
    • 40-lead 5×5mm TQFN

Product Specifications

Product Parameters

Function Buffer
Number of Outputs 5
Output Type(s) HCSL
Maximum Output Frequency (MHz) 250
Additive Jitter (ps) 0.03
Supply Voltage (V) 1.8
Input Type(s) HCSL
Skew (ps) 50
Ambient or Junction Temperature (°C) -40 to 85

Technical Documents

Recommended Soldering Techniques



Orderable Part Number Status Package Environmental Compliance Packing Buy from Distributor /
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Request Samples
Qty. Carrier
PI6CBF18501ZLAIEX Active W-QFN5050-40 TPGP 3500 T&R Contact Sales Request Sample
PI6CBF18501ZLAIEX-13R Active W-QFN5050-40 TPGP 3500 T&R Contact Sales 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

Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2585 2022-06-08 2022-09-08 Qualified Additional Assembly/Test (A/T) Sites, Wafer Fab IMD Backend, and Package Outline Dimension Change