资 源 简 介
The MT8880C/C-1 is a monolithic DTMF transceiverwith call progress filter. It is fabricated in Mitel’sISO2-CMOS technology, which provides low powerdissipaTIon and high reliability. The DTMF receiver isbased upon the industry standard MT8870monolithic DTMF receiver; the transmitter uTIlizes aswitched capacitor D/A converter for low distorTIon,high accuracy DTMF signalling. Internal countersprovide a burst mode such that tone bursts can betransmitted with precise TIming. A call progress filtercan be selected allowing a microprocessor toanalyze call progress tones. A standardmicroprocessor bus is provided and is directlycompatible with 6800 series microprocessors. TheMT8880C-1 is functionally identical to the MT8880Cexcept for the performance of the receiver section,which is enhanced to accept and reject lower signallevels.
