GENERAL DESCRIPTION
The XRT7300 DS3/E3/STS-1 Line Interface Unit is designed to be used in DS3, E3 or SONET STS-1 applications and consists of a line transmitter and receiver integrated on a single chip.

FEATURES
• 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
• Requires Single +5V Power Supply
• -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