GENERAL DESCRIPTION

The XRT73L00A DS3/E3/STS-1 Line Interface Unit is an improved version of the XRT73L00 and consists of a line transmitter and receiver integrated on a single chip and is designed for DS3, E3 or SONET STS-1 applications.

FEATURES

• Incorporates an improved Timing Recovery circuit and is pin and functional compatible to XRT73L00

• Meets E3/DS3/STS-1 Jitter Tolerance Requirements

• Full Loop-Back Capability

• Transmit and Receive Power Down Modes

• Full Redundancy Support

• Contains a 4-Wire Microprocessor Serial Interface

• Uses Minimum External components

• Single +3.3V Power Supply

• 5 V Tolerant pins

• -40°C to +85°C Operating Temperature Range

• Available in a 44 pin TQFP package

APPLICATIONS

• Interfaces to E3, DS3 or SONET STS-1 Networks

• CSU/DSU Equipment

• PCM Test Equipment

• Fiber Optic Terminals

• Multiplexers