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
Catalogue
FPGA / CPLD
Memory
MOS 
MCU 
DSP
OCEP
Secondary 
Other 
