Document
Data Sheet May 2001
L8576B Dual Ringing SLIC
Features
s Two SLIC channels for multiple tip/ring interfaces s On-chip balanced ringing generator, no ring relay
required s Single battery operation or optional automatic bat-
tery switch s Quiet battery reversal for on-hook signaling s Disconnect state s Distortion-free, on-hook transmission s 24 mA loop current limiter s Ring trip detector s Switchhook detector s Immune to channel crosstalk and impulse noise s Allows rail overvoltages for ease of protection s Thermal protection s 44-pin, surface-mount, plastic package (PLCC)
Applications
s POTS for ISDN
s Terminal adapters (TA)
s Digital loop carrier (DLC) systems
s PABX
Description
The Agere Systems Inc. L8576B electronic dual subscriber line interface circuit (SLIC) provides all the functions that are necessary to interface a codec to the tip and ring of a subscriber loop, integrating two battery feeds and ringing generators in one low-cost package. The L8576B device is optimized to .