78P2351R

Serial 155M NRZ-to-CMI Converter

Smallest Power and Package Footprint for NRZ-to-CMI Conversion
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Active: In Production.

Description

The 78P2351R is Teridian’s second generation line interface unit (LIU) for 155Mbps electrical SDH interfaces (STM-1e). The device is a single-chip solution that includes an integrated clock and data recovery in both the transmit and receive paths for easy, cost-efficient NRZ-to-CMI conversion.

The device interfaces to 75Ω coaxial cable through wideband transformers and can handle over 12.7dB of cable loss. By eliminating the needs for synchronous clocks, the small 78P2351R (7mm x 7mm MLF package) is ideal for new STM-1e (ES1) small form-factor pluggable (SFP) transceiver modules.

Data Sheet

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Key Features

  • ITU-T G.703-Compliant, Adjustable Cable Driver for 155.52Mbps CMI-Coded Coax Transmission
  • Integrated Adaptive CMI Equalizer and CDR in Receive Path Handles Over 12.7dB of Cable Loss
  • LVPECL-Compatible System Interface with Integrated CDR in Transmit Path for Flexible NRZ-to-CMI Conversion
  • Configurable Through Hardware Control Pins or 4-Wire Serial Port Interface
  • Compliant with ANSI T1.105.03-1994; ITU-T G.813, G.825, G.958; and Telcordia GR-253-CORE for Jitter Performance
  • Receive Loss-of-Signal (Rx LOS) Detection
  • Receive Monitor Mode Handles Up to 20dB of Flat Loss (at max 6dB Cable Loss)
  • Optional Fixed Backplane Equalizer Compensates for Up to 1.5m of Trace
  • Operates from a Single 3.3V Supply
  • Available in a Small 7mm x 7mm, 56-Pin QFN Package
  • Industrial Temperature Range: -40°C to +85°C
 

Applications/Uses

  • Add/Drop Multiplexers (ADMs)
  • Digital Microwave Radios
  • Multiservice Switches
  • PDH/SDH Test Equipment
  • SDH/ATM Line Cards
  • STM-1e SFP Modules
   

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Document Ref.: 19-5433 Rev 2; 2010-07-28
This page last modified: 2010-10-25