Exar Corporation XRT73L03B
The XRT73L03B, 3-Channel, DS3/E3/STS-1 Line Interface Unit is a low power CMOS version of the XRT73L03A and consists of three independent line transmitters and receivers integrated on a single chip designed for DS3, E3 or SONET STS-1 applications. Each channel of the XRT73L03B 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.| Part No. | XRT73L03B |
|---|---|
| Datasheet | XRT73L03B Download |
| Manufacturer |  Exar Corporation |
| Description | 3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT |
| Buy | Stock & Price |
GENERAL DESCRIPTION
In the transmit direction, each channel encodes input data to either B3ZS (DS3/STS-1) or HDB3 (E3) format and converts the data into the appropriate pulse shapes for transmission over coaxial cable via a 1:1 transformer. In the receive direction, the XRT73L03B performs equalization on incoming signals, performs Clock Recovery, decodes data from either B3ZS or HDB3 format, converts the receive data into TTL/CMOS format, checks for LOS or LOL conditions and detects and declares the occurrence of Line Code Violations.FEATURES
● Incorporates an improved Timing Recovery circuit and is pin and functional compatible to XRT73L03A● Meets E3/DS3/STS-1 Jitter Tolerance Requirements
● Contains a 4-Wire Microprocessor Serial Interface
● Full Loop-Back Capability
● Transmit and Receive Power Down Modes
● Full Redundancy Support
● Uses Minimum External components
● Single +3.3V Power Supply
● Low power CMOS design
● 5V tolerant I/O
● -40°C to +85°C Operating Temperature Range
●...
