78P2351

Single-Channel OC-3/STM-1e/E4 LIU

Highest Integration and Performance at the Lowest Power per Port for STM-1e/E4

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Overview

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-Compatible 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 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
100-Pin JEDEC LQFP

The 78P2351 is Teridian’s second generation line interface unit (LIU) for 155Mbps (OC-3, STS-3, or STM-1) and 140Mbps PDH (E4) telecom interfaces. The device is a 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 78P2351 is compliant with all respective ANSI, ITU-T, and Telcordia standards for jitter tolerance, generation, and transfer.

Applications