Description
The SLIC provides a complete interface between a switching system and subscriber loop. Functions provided include battery feed, ringing feed and tipring reversal to the subscriber line, 2-Wire to 4-Wire hybrid interfacing, constant current feed and dial pulse detection. The device is fabricated as a thick film hybrid using various technologies.

Features
• Input impedance 600 Ω
• 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 with diode protection
• Power Denial
• Wide VBAT Operating Range
• Tip/Ring Reversal

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