MM74HC942 Overview
The MM74HC942 is a full duplex low speed modem It provides a 300 baud bidirectional serial interface for data munication over telephone lines and other narrow bandwidth channels It is Bell 103 patible The MM74HC942 utilizes advanced silicon-gate CMOS technology Switched capacitor techniques are used to perform analog signal processing MODULATOR SECTION The modulator contains a frequency synthesizer and a sine wave...