XRT73L03

Storage Temperature ............- 65  to + 150
Operating Temperature ...........- 40 to + 85
Supply Voltage Range ...........-0.5V to +3.465V
Theta-JA ...............................................23 /W
Theta-JC .................................................7 /W
NOTE: The XRT73L03 is assembled in a thermally enhanced package with an intergral Copper Heat Slug. The Heat Slug is solder plated and is exposed on the bottom of the package and is electrically connected to the Ground connections of the device. This Heat Slug can be soldered to the mounting board if desired, but must be isolated from any VDD connections.

The XRT73L03 is a 3-Channel, E3/DS3/STS-1 Line Interface Unit designed for E3, DS3 or SONET STS-1applications 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.

In the transmit direction, each channel in the XRT73L03 encodes input data to either B3ZS or HDB3 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 XRT73L03 can perform Equalization on incoming signals, perform Clock Recovery, decode data from either B3ZS or HDB3 format, convert the receive data into TTL/CMOS format, check for LOS or LOL conditions and detect and declare the occurrence of Line Code Violations.