The MC34014 is a Telephone Speech Network integrated circuit which incorporates adjustable transmit, receive, and sidetone functions, a dc loop interface circuit, tone dialer interface, and a regulated output voltage for a pulse/tone dialer. Also included is an equalization circuit which compensates gains for line length variations. The conversion from 2-to-4 wire is accomplished with a supply voltage as low as 1.5 volts. The MC34014 is packaged in a standard 18-pin (0.3" wide) plastic DIP and a 20-pin SOIC package.
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