Overview

The 843S104I-133 is a PLL-based clock synthesizer specifically designed for low phase noise applications. This device generates a 133.33MHz differential LVPECL clock from an input reference of 25MHz. The input reference may be derived from an external source or by the addition of a 25MHz crystal to the on-chip crystal oscillator. An external reference is applied to the PCLK, nPCLK pins.The device offers spread spectrum clock output for reduced EMI applications. An I2C bus interface is used to enable or disable spread spectrum operation as well as to select either a down spread value of -0.35% or -0.5%.The 843S104I-133 is available in a lead-free 32-Lead VFQFN package.

843S104I-133 - Block Diagram
843S104I-133 - Pinout
843S104I-133 - Block Diagram
843S104I-133 - Pinout
  • Four LVPECL output pairs
  • Crystal oscillator interface: 25MHz
  • Differential PCLK/nPCLK input pair
  • PCLK/nPCLK supports the following input types: LVPECL, CML, SSTL
  • Output frequency: 133.33MHz
  • PCI Express (2.5 Gb/s) and Gen 2 (5 Gb/S) jitter compliant
  • RMS phase jitter @ 133.33MHz (12kHz - 20MHz): 1.2ps (typical)
  • I2C support with readback capabilities up to 400kHz
  • Spread Spectrum for electromagnetic interference (EMI) reduction
  • 3.3V operating supply mode
  • -40°C to 85°C ambient operating temperature
  • Available lead-free (RoHS 6) package

Documentation

= Featured Documentation
Type Title Date
Datasheet
843S104I-133 Final Data Sheet
PDF 537 KB
End Of Life Notice
PLC# : 220006(R1) End-of-Life (EOL) Process on Select Part Numbers
PDF 1.22 MB
End Of Life Notice
PLC# : 220006 End-of-Life (EOL) Process on Select Part Numbers
PDF 1.15 MB
Product Change Notice
PCN# : 220015 Add Alternate Assembly Location on VFQFPN Packages
PDF 728 KB
Product Change Notice
PCN# : A1904-01 Add Greatek, Taiwan as an Alternate Assembly Facility
PDF 983 KB
Product Change Notice
PCN# : A1611-02 Add JCET China as Alternate Assembly and Change of Material Set at Alternate Assembly Location
PDF 583 KB
Product Change Notice
PCN# : A1511-01(R1) Add SPEL India as Alternate Assembly Location
PDF 596 KB
Product Change Notice
PCN# : A1511-01 Add SPEL India as Alternate Assembly Location
PDF 544 KB
8 items

Design & Development

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

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Product Options

    Processing table
    Pkg. Type
    Lead Count (#)
    Temp. Grade
    Pb (Lead) Free
    Carrier Type
    Buy / Sample
    Part Number
    843S104BKI-133LF
    circleObsolete
    memory
    view_in_ar
    		VFQFPN 32 I Yes Tray
    843S104BKI-133LFT
    circleObsolete
    memory
    view_in_ar
    		VFQFPN 32 I Yes Reel
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