78P2352

Dual-Channel OC-3/STM1-1e/E4 LIU

Highest Integration and Lowest Power LIU for STM-1e/E4


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Description

The 78P2352 is Teridian's second generation line interface unit (LIU) for 155Mbps SDH/SONET (OC-3, STS-3, or STM-1) and 140Mbps PDH (E4) telecom interfaces. The device is a dual-channel, single-chip solution that includes an integrated CDR in the transmit path for flexible NRZ-to-CMI conversion. The device can interface to 75Ω coaxial cable using CMI coding or directly to a fiber optics transceiver module using NRZ coding. The 78P2352 is compliant with all respective ANSI, ITU-T, and Telcordia standards for jitter tolerance, generation, and transfer.

Key Features

  • ITU-T G.703-Compliant Cable Driver for 139.264Mbps or 155.52Mbps CMI-Coded Coax Transmission
  • Integrated Adaptive CMI Equalizer and CDR in Receive Path Handles Over 12.7dB of Cable Loss
  • Serial LVPECL System Interface with Integrated CRU in Transmit Path for Flexible NRZ-to-CMI Conversion
  • 4-Bit Parallel CMOS System Interface with Master and Slave Tx Clock Modes
  • Selectable LVPECL-Compatible NRZ Media Interface for 155.52Mbps Optical Transmission
  • Configurable Through Hardware Control Pins or 4-Wire Serial Port Interface
  • Compliant with ANSI T1.105.03-1994; ITU-T G.751, G.813, G.823, G.825, G.958; and Telcordia GR-253-CORE for Jitter Performance
  • Receiver Loss-of-Signal (LOS) Detection Compatible with ITU-T G.783
  • Operates from a Single 3.3V Supply
  • Standard and Thermally Enhanced 128-Pin JEDEC LQFP Package Options

Applications/Uses

  • Add/Drop Multiplexers (ADMs)
  • Central Office Interconnects
  • Digital Microwave Radios
  • DSLAMs
  • Multiservice Switches

Technical Documents

App Note 4880 Design Guidelines for 78P235x E4/STM1e LIUs

Quality and Environmental Data

Request Reliability Report for: 78P2352 
Lead-Free Package Tin (Sn) Whisker Reports
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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Related Resources

Type ID Title
Evaluation Board689378P2352-DB 78P2352 Demo Board

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05/29/2020 - 05/31/2020, Detroit, MI
2020 Detroit Grand Prix - Chevrolet Detroit Grand Prix presented by Lear Fast Facts The Chevrolet Detroit Grand Prix presented by Lear was hosted on Belle Isle, May 29 - 30 2020. The event featured the cars of the NTT IndyCar Series, the IMSA WeatherTech SportsCar Championship and the Trans Am Series presented by Pirelli. The weekend is collectively referred to as the Chevrolet Detroit Grand Prix presented by Lear and it once again featured the Chevrolet Dual in Detroit IndyCar doubleheader.

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