View mc34216rev0a datasheet:

Order this document from Analog Marketing MC34216 Product Preview Programmable Telephone PROGRAMMABLE Line Interface Circuit with TELEPHONE LINE INTERFACE CIRCUIT WITH Loudspeaker Amplifier LOUDSPEAKER AMPLIFIER The MC34216 is developed for use in telephone applications where SEMICONDUCTOR besides the standard telephone functions also the group listening–in feature TECHNICAL DATA is required. In cooperation with a microcontroller, the circuit performs all basic telephone functions including DTMF generation and pulse dialing. The listening–in part includes a loudspeaker amplifier, an anti–howling circuit and a strong supply. In combination with the TCA3385, the ringing is performed via the loudspeaker. FEATURES Line Driver and Supply 28 • DC and AC Termination of the Li