XRT73L03 Datasheet - Exar Corporation

GENERAL DESCRIPTION
The XRT73L03 is a 3-Channel, E3/DS3/STS-1 Line Interface Unit designed for E3, DS3 or SONET STS-1 applications and consists of three independent line transmitters and receivers integrated on a single chip.
Each channel of the XRT73L03 can be configured to support the E3 (34.368 Mbps), DS3 (44.736 Mbps) or the SONET STS-1 (51.84 Mbps) rates. Each channel can be configured to operate in a mode/data rate that is independent of the other channels.

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
• Single +3.3V Power Supply
• 5V tolerant I/O
• -40°C to +85°C Operating Temperature Range
• Available in a Thermally Enhanced 120 pin TQFP package

APPLICATIONS
• Digital Cross Connect Systems
• CSU/DSU Equipment
• Routers
• Fiber Optic Terminals
• Multiplexers
• ATM Switches