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MAX3270
155Mbps/622Mbps Clock Recovery and Data Retiming IC with Fully Integrated Phase Frequency Detector

Recommended Upgrades for New Designs
Part Number Replacement Explanation
MAX3270 MAX3676 This part remains available but is not recommended for new designs.
MAX3270EMH MAX3676 This product is no longer available.


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Description
FULL DATA SHEET (PDF, 264kB)
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The MAX3270 is a complete Clock Recovery and Data Retiming IC for 155Mbps and 622Mbps SDH/SONET and ATM applications. The MAX3270 meets Bellcore and CCITT jitter tolerance specifications ensuring error-free data recovery. Recovered clock and data are phase aligned using a fully integrated phase-locked loop (PLL). An output frequency monitor (FM) is included to detect loss of PLL acquisition or a loss of input data.

The MAX3270 has differential ECL input and output interfaces, so it is less susceptible to noise in a high-frequency environment. The fully integrated PLL includes an integrated phase-frequency detector that eliminates the need for external references.

Key Features   Applications/Uses
  • Supports Both 155Mbps and 622Mbps Clock Recovery and Data Retiming
  • Fully Integrated Phase/Frequency Detector
  • Capable of Switching to an External Clock
  • Differential 100K ECL Data and Clock I/Os
  • Output Monitor Provides Lock Detection
  • No External Reference Clock Required

     
  • 155Mbps (STM-1/OC-3) SDH/SONET Transmission Systems
  • 155Mbps/622Mbps ATM/SONET Access Nodes
  • 622Mbps (STM-4/OC-12) SDH/SONET Transmission Systems
  • Add/Drop Multiplexers
  • Cross-Connects

    Diagram
    MAX3270: Typical Operating Circuit
    Typical Operating Circuit

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    Document Ref.: 19-0379; Rev 1; 2000-09-21
    This page last modified: 2007-05-30


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