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Renesas’ Timing product portfolio has been acquired by SiTime.

Datasheets, documentation, and sample orders remain available on Renesas.com through late 2026. For new designs, purchasing, support, and product inquiries, visit SiTime.com or send an email to SalesClocks@sitime.com. Full transition to SiTime is expected by late 2026.

551S

Active

Low Skew 1 to 4 Clock Buffer

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Features

  • Low additive phase jitter RMS: 50fs
  • Extremely low skew outputs (50ps)
  • Low-cost clock buffer
  • Packaged in an 8-pin SOIC and 8-pin DFN, Pb-free
  • Input/Output clock frequency up to 200MHz
  • Non-inverting output clock
  • Ideal for networking clocks
  • Operating voltages: 1.8V to 3.3V
  • Output Enable mode tri-state outputs
  • Advanced, low-power CMOS process
  • Extended temperature range: -40 °C to +105 °C
Find Other Products in Clock Distribution
551S Block Diagram
551S Pinout - DFN
551S Pinout - SOIC
551S Block Diagram
551S Block Diagram
551S Pinout - DFN
551S Pinout - SOIC

Description

The 551S is a low cost, high-speed single input to four output LVCMOS clock buffer that offers a best-in-class additive phase jitter of sub 50fs.

Parameters

AttributesValue
Temp. Range (°C)-40 to 85°C
Product CategoryClock Buffers & Drivers

Package Options

Pkg. TypePkg. Dimensions (mm)Lead Count (#)Pitch (mm)
COL2.0 x 2.0 x 0.580.5
SOIC4.9 x 3.9 x 1.581.27
TSSOP3.1 x 4.4 x 1.080.65
Part NumberStatusSamplesStockPackageBudgetary Price (USD)Lead Count (#)Carrier TypeMoisture Sensitivity Level (MSL)Qty. per Reel (#)Package Area (mm²)Pitch (mm)Pkg. Dimensions (mm)Reel Size (in)Qty. per Carrier (#)Pb (Lead) FreePb Free CategoryTemp. Range (°C)Country of AssemblyCountry of Wafer Fabrication
551SCMGIActiveAvailableOut of StockCOL1ku | $0.88#Cut Tape14000#4mm²0.5mm2.0 x 2.0 x 0.57in0Yese4 NiPdAu-40 to 85°CMALAYSIA, THAILANDCHINA, TAIWAN
551SCMGI8ActiveN/AOut of StockCOL1ku | $0.88#Reel14000#4mm²0.5mm2.0 x 2.0 x 0.57in0Yese4 NiPdAu-40 to 85°CMALAYSIA, THAILANDCHINA, TAIWAN
551SDCGIActiveAvailableIn StockSOIC1ku | $0.88#Tube1019.1mm²1.27mm4.9 x 3.9 x 1.597#Yese3 Sn-40 to 85°CTAIWAN, THAILANDCHINA, TAIWAN
551SDCGI8ActiveN/AIn StockSOIC1ku | $0.88#Reel13000#19.1mm²1.27mm4.9 x 3.9 x 1.513in0Yese3 Sn-40 to 85°CTAIWAN, THAILANDCHINA, TAIWAN
551SPGGIActiveAvailableIn StockTSSOP1ku | $0.968#Tube100.65mm3.1 x 4.4 x 1.096#Yese3 Sn-40 to 85°CTAIWAN, THAILANDCHINA, TAIWAN
551SPGGI8ActiveN/AIn StockTSSOP1ku | $0.968#Reel12500#0.65mm3.1 x 4.4 x 1.013in0Yese3 Sn-40 to 85°CTAIWANCHINA, TAIWAN
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    Recommended Documents (1)

  1. Datasheet
    551S Datasheet
    RECOMMENDED
    PDF 274 KB R31DS0038EU0203 Rev.2.03 Jul 04, 2025

    Datasheets (1)

  1. Datasheet
    551S Datasheet
    RECOMMENDED
    PDF 274 KB R31DS0038EU0203 Rev.2.03 Jul 04, 2025

    Application Notes & White Papers (4)

  1. Application Note
    Termination Options for High-Speed LVCMOS Driver Clock Drivers
    PDF 187 KB R31AN0065EU0101 Rev.1.01 Nov 14, 2023
  2. Application Note
    AN-842 Thermal Considerations in Package Design and Selection
    PDF 495 KB 7WDXRDKU4E7E-5-57312 May 12, 2014
  3. Application Note
    AN-840 Jitter Specifications for Timing Signals
    PDF 442 KB 7WDXRDKU4E7E-5-57298 May 08, 2014
  4. Application Note
    AN-815 Understanding Jitter Units
    PDF 565 KB 7WDXRDKU4E7E-5-57243 Apr 24, 2014

    Product Notices (PCN, EOL, etc) (3)

  1. Product Change Notice
    PCN# : A1905-02 Adding Carsem, Malaysia as Alternate Assembly Location & Change Material Sets
    PDF 268 KB Jun 12, 2019
  2. Product Change Notice
    PCN# : A1602-01(R1) Add Greatek Taiwan as Alternate Assembly
    PDF 611 KB 7WDXRDKU4E7E-5-60321 Apr 14, 2016
  3. Product Change Notice
    PCN# : A1602-01 Add Greatek Taiwan as Alternate Assembly
    PDF 611 KB 7WDXRDKU4E7E-5-59927 Feb 15, 2016

    Marketing Collateral (1)

  1. Overview
    Clock Distribution Overview
    PDF 217 KB 7WDXRDKU4E7E-6-10433 Nov 07, 2020

Partner Boards & Kits

V2N SoM Board by IMDT.
SoM/SBC

V2N System on Module (SoM)

Provides a cost‑effective embedded module powered by the Renesas RZ/V2N processor for AI‑driven vision applications. It supports two four‑lane MIPI CSI‑2 connections, enabling concurrent attachment of up to four cameras. Customization options include onboard Wi‑Fi® and Bluetooth®, configurable memory and storage capacities, and flexible physical layer settings. The module delivers a compact form factor, enhanced security features, and an integrated hardware and software solution supporting modular system design.
Supported Products:
RZ/V2N,SLG47528,9FGV0241,ICL3221E,SLG59M1446V,551S
Provided By:
IMDT
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Simulation Models

    Simulation Models (1)

  1. Model - IBIS
    551S IBIS Model
    ZIP 27 KB 7WDXRDKU4E7E-5-62984 Jun 07, 2018
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News & Blog Posts

Support Communities

  1. alternate of Infineon part CY7B9910-5SXI

    Currently, we are looking for an alternate of discontinued Infineon part CY7B9910-5SXI.This is Low Skew Clock Buffer 80MHz-OUT 24-Pin SOIC. Kindly let me know the nearest alternate.

    Mar 3, 2026
  2. What is the difference between theses 1 to 4 LVCMOS buffers?

    What is the difference between the following 1 to 4 LVCMOS buffers: 553S, 551S, 651S, 621S & 524S, 74FCT38074S and 5PB1104?

    Apr 23, 2024
  3. Sparkfun DA16200: "Failed to initialize RAMCode" when flashing using J-Link

    ... FBOOT.bin, 0x10000000 Downloading file [FBOOT.bin]... J-Link: Flash download: Bank 0 @ 0x10000000: 1 range affected (32768 bytes) J-Link: Flash download: Total: 4.551s (Prepare: 1.573s, Compare: 0.866s, Erase: 0.398s, Program: 0.703s, Verify: 0.391s, Restore: 0.616s) J-Link: Flash download: Program speed ...

    Feb 8, 2023
View All Results from Support Communities (4)
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