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

Features
• Input impedance 200Ω + 560Ω // 0.1µF
• Transformerless 2-wire to 4-wire conversion
• Battery and ringing feed to line
• Off-hook and dial pulse detection
• Ring ground over-current protection
• Adjustable constant current feed
• Relay drive output
• Power VBat Denial
• Wide Operating Range
• Programmable Receive Gain

Applications
Line interface for:
• PABX
• Intercoms
• Key Telephone Systems
• Control Systems