MT8880CE Datasheet PDF - Zarlink

Description

●The MT8880C is a monolithic DTMF transceiver with call progress filter. It is fabricated in Zarlink’s ISO2-CMOS technology, which provides low power dissipation and high reliability. The DTMF receiver is based upon the industry standard MT8870 monolithic DTMF receiver; the transmitter utilizes a switched capacitor D/A converter for low distortion, high accuracy DTMF signalling. Internal counters provide a burst mode such that tone bursts can be transmitted with precise timing. A call progress filter can be selected allowing a microprocessor to analyze call progress tones. A standard microprocessor bus is provided and is directly compatible with 6800 series microprocessors.

●Features

●• Complete DTMF transmitter/receiver

●• Central office quality

●• Low power consumption

●• Microprocessor port

●• Adjustable guard time

●• Automatic tone burst mode

●• Call progress mode

●Applications

●• Credit card systems

●• Paging systems

●• Repeater systems/mobile radio

●• Interconnect dialers

●• Personal computers