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PCI Express® 1:8 HCSL Clock Buffer

NOTE: Datasheet may not yet reflect updated package obsolescence/phase out status or Package Drawing. Please refer to the PRODUCT OPTIONS tab for the most up to date package options and drawings. Please refer to PCN/PDN tabs for most current package obsolescence/phase out status.
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Product Description

PI6C20800S is a PCI Express®, high-speed, low-noise differential clock buffer designed to be a companion to PI6C410BS PCI Express clock generator for Intel server chipsets. The device distributes the differential SRC clock from PI6C410BS to eight differential pairs of clock outputs either with or without PLL. The input SRC clock can be divided by 2 when SRC_DIV# is LOW. The clock outputs are controlled by input selection of SRC_STOP#, PWRDWN# and SMBus, SCLK and SDA. When input of either SRC_STOP# or PWRDWN# is LOW, the output clocks are Tristated. When PWRDWN# is LOW, the SDA and SCLK inputs must be Tristated.


  • Phase jitter filter for PCIe® application
  • Eight Pairs of Differential Clocks
  • Low skew < 50ps (PI6C20800S), <60ps (PI6C20800SI)
  • Low Cycle-to-cycle jitter < 50ps
  • Output Enable for all outputs
  • utputs Tristate control via SMBus
  • Power Management Control
  • Programmable PLL Bandwidth
  • PLL or Fanout operation
  • 3.3V Operation
  • Industrial Temperature Option - PI6C20800SI
  • Packaging (Pb-Free & Green):
    — 48-Pin SSOP (V)
    — 48-Pin TSSOP (A)

Product Specifications

Product Parameters

Compliance(Only Automotive supports PPAP) Standard
Function PCIe clock buffer
Input Type(s) HCSL
Jitter RMS (ps) 70
Number of Outputs 8
Output Frequency (MHz) 100
Output Type(s) HCSL
Skew (PS) 50
Supply Voltage (V) 3.3
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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Qty. Carrier
PI6C20800SAE Obsolete TSSOP-48 GREEN 39 TUBE
PI6C20800SAEX Active TSSOP-48 TPGP 1500 T&R


Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Digi-Key Electronics 4455 12/5/2022 Europe, Asia, North America Buy Now
Mouser Electronics Inc. 5800 12/5/2022 South America, North America, Asia, Europe, Middle East Buy Now
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PI6C20800SVE Obsolete SSOP-48 GREEN 30 TUBE
PI6C20800SVEX Active SSOP-48 TPGP 1000 T&R


Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Mouser Electronics Inc. 35 12/5/2022 South America, North America, Asia, Europe, Middle East 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

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-2327 (Advance Notice) 2018-04-20 2020-11-11 Fab Porting from Global Foundries to MagnaChip, Assembly Site Transfer, and Bond Wire Change