Diodes Incorporated
Back to Differential Clock Buffers

PI6C485311 (Not Recommended for New Design (NRND))

NRND = Not Recommended for New Design

3.3V, 2 Outputs, Differential to LVPECL Clock Buffer, Selectable Inputs

NOTE: Datasheet may not yet reflect updated package obsolescence/phase out status or Package Drawing. Please refer to the BUY NOW 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.
Contact Sales

Log in or register to manage email notifications about changes to datasheets or PCNs for this part.

Product Description

The PI6C485311 is a high-performance low-skew LVPECL fanout buffer. PI6C485311 features two selectable differential inputs and translates to four LVPECL ultra-low jitter outputs.
The inputs can also be configured to single-ended with external resistor bias circuit. The CLK input accepts LPECL or LVDS or LVHSTL or SSTL or HCSL signals, and PCLK input accepts LVPECL or SSTL or CML signals. PI6C485311 is ideal for differential to LVPECL translations and/or LVPECL clock distribution. Typical clock translation and distribution applications are data-communications and telecommunications.


  • Pin-to-pin compatible to ICS85311
  • Maximum operation frequency: 800MHz
  • 2 pair of differential LVPECL outputs
  • CLK, nCLK pair accepts LVDS, LVPECL, LVHSTL, SSTL and HCSL input level
  • Output Skew: 100ps (maximum)
  • Part-to-part skew: 150ps (maximum)
  • Propagation delay: 2ns (maximum)
  • 3.3V power supply
  • Operating Temperature: -40ºC to 85ºC
  • Packaging (Pb-free & Green avaliable):
    - 8-pin SOIC (W)

Product Specifications

Product Parameters

Compliance (Only Automotive(Q) supports PPAP) Standard
Function Buffer
Number of Outputs 2
Output Type(s) LVPECL
Maximum Output Frequency (MHz) 800
Additive Jitter (ps) 0.05
Supply Voltage (V) 3.3
Input Type(s) Differential
Skew (ps) 100
Ambient or Junction Temperature (°C) -40 to 85

Technical Documents

Application Information

Design tool model software

Recommended Soldering Techniques


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-2654 2024-02-15 2024-04-28 Device End of Life (EOL)
PCN-2602 2023-01-31 2023-07-31 Device End of Life (EOL)
PCN-2587 2022-05-13 2022-11-13 Device End of Life (EOL)
PCN-2466 2020-07-02 2020-10-02 Package Change and Additional Qualified Plating Source