MT8870 Datasheet (Mitel Networks Corporation) - ISO2-CMOS Integrated DTMF Receiver

MT8870, ISO2-CMOS Integrated DTMF Receiver

The MT8870D/MT8870D-1 is a complete DTMF receiver integrating both the bandsplit filter and digital decoder functions.

The filter section uses switched capacitor techniques for high and low group filters; the decoder uses digital counting techniques to detect and decode all 16 DTMF tonepairs into a

MT8870 Features

* Complete DTMF Receiver Low power consumption Internal gain setting amplifier Adjustable guard time Central office quality Power-down mode Inhibit mode Backward compatible with MT8870C/MT8870C-1 ISSUE 3 May1995 Orderin