Description

The SLIC provides a complete interface between a switching system and a subscriber loop. Functions provided include battery feed and ringing feed to the subscriber line, 2-Wire to 4-Wire hybrid interfacing, constant current feed with constant voltage foldback, and dial pulse detection. The device is fabricated using thick film hybrid technology in a 20-pin single in-line package.

Features

• Transformerless 2-wire to 4-wire conversion

• Battery and ringing feed to line.

• Off-hook and dial pulse detection.

• Ring ground over-current protection.

• Constant current feed with constant voltage foldover.

• Relay driver.

• Power Denial.

• Wide Operating Range.

• Pin for pin compatible 600R and 900R variants.

Applications

Line interface for:

 • PABX

 • Intercoms

 • Key Telephone Systems

 • Control Systems