MC33121 Overview
MOTOROLA SEMICONDUCTOR TECHNICAL DATA Order this document by MC33121/D MC33121 Low Voltage Subscriber Loop Interface Circuit (SLIC) Thin Film Silicon Monolithic Integrated Circuit The MC33121 is designed to provide the interface between the 4 wire side of a central office, or PBX, and the 2 wire subscriber line. Interface functions include battery feed, proper loop termination AC impedance, hookswitch detection,...