Overview

The 841484I is an optimized PCIe and sRIO clock generator. The device uses a 25MHz parallel resonant crystal to generate 100MHz, 125MHz, 200MHz and 400MHz clock signals, replacing solutions requiring multiple oscillator and fanout buffer solutions. The device has excellent phase jitter suitable to clock components requiring precise and low jitter PCIe, sRIO or both clock signals. The device also supports a configurable spread-spectrum generation for PCIe applications. Designed for telecom, networking and industrial applications, the 841484I can also drive the high-speed sRIO and PCIe SerDes clock inputs of communications processors, DSPs, switches and bridges.

841484I - Block Diagram
841484I - Pinout
841484I - Block Diagram
841484I - Pinout
  • Four 0.7V differential HCSL outputs: configurable for PCIe (100MHz or 200MHz) and sRIO (125MHz) clock signals
  • One LVCMOS/LVTTL reference clock output
  • Selectable crystal oscillator interface, 25MHz, 18pF parallel resonant crystal or LVCMOS/LVTTL single-ended reference clock input
  • Supports the following output frequencies: 100MHz, 125MHz, 200MHz or 400MHz
  • VCO frequency range: 950MHz - 1.25GHz
  • Configurable spread-spectrum generation for PCIe
  • PLL bypass and output enable
  • RMS phase jitter @ 200MHz, using a 25MHz crystal (12kHz - 20MHz): 1.21ps (typical)
  • PCI Express (2.5 Gb/S), Gen 2 (5 Gb/s) and Gen 3 (8 Gb/s) jitter compliant (REF_OUT disabled)
  • Full 3.3V operating supply
  • -40°C to 85°C ambient operating temperature
  • Available in lead-free (RoHS 6) packages

Documentation

= Featured Documentation
Type Title Date
Datasheet
841484I Datasheet
PDF 914 KB
Overview
PCI Express Timing Solutions Overview
PDF 2.40 MB
End Of Life Notice
PDN# : CQ-17-04(R1) Product Discontinuance Notice
PDF 606 KB
End Of Life Notice
PDN# : CQ-17-04 Product Discontinuance Notice
PDF 599 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
6 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.

Explore ECAD Models
Diagram of ECAD Models

Product Options

    Processing table
    Pkg. Type
    Lead Count (#)
    Temp. Grade
    Pb (Lead) Free
    Carrier Type
    Buy / Sample
    Part Number
    841484DKILF
    circleObsolete
    memory
    view_in_ar
    		VFQFPN 32 I Yes Tray
    841484DKILFT
    circleObsolete
    memory
    view_in_ar
    		VFQFPN 32 I Yes Reel
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