74HC942 modem equivalent, full duplex low speed modem.
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www.DataSheet4U.com MODULATOR SECTION
The modulator contains a frequency synthesizer and a sine wave synthesizer It produces a phase coherent freque.
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Built-in low speed modems Remote data collection Radio telemetry Credit verification Stand-alone modems.
The MM74HC942 is a full duplex low speed modem It provides a 300 baud bidirectional serial interface for data communication over telephone lines and other narrow bandwidth channels It is Bell 103 compatible The MM74HC942 utilizes advanced silicon-gat.
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