M-8880 Datasheet (Clare Inc.) - M-8880 DTMF Transceiver

M-8880, M-8880 DTMF Transceiver

M-8880 functions consist of a high-performance DTMF receiver with an internal gain setting amplifier and a DTMF generator that contains a tone burst counter for generating precise tone bursts and pauses.

The call progress mode, when selected, allows the detection of call progress tones.

A standard 6

M-8880 DTMF Transceiver Advanced CMOS technology for low power consumption and increased noise immunity Complete DTMF transmitter/receiver in a single chip Standard 6500/6800 series microprocessor port Central office quality and performance Adjustable guard time Automatic tone burst mode Call progress mode Single +5 Volt power supply 20-pin DIP and SOIC packages 2 MHz microprocessor port operation Inexpensive 3.58 MHz

M-8880 Features

* adjustable guard time, automatic tone burst mode, call progress mode, and a fully compatible 6500/6800 microprocessor interface. The receiver portion is based on the industry standard M-8870 DTMF Receiver, while the transmitter uses a switched-capacitor digital-to-analog converter for low-distortion