DTMF Voice Decoding Module MT8870

The MT8870 module is a low power device DTMF decoder chip. It is a complete DTMF receiver integrating both the band-split filter and digital decoding functions. This module is suitable for modem interfaces, mobile radios and other DTMF related applications.

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
Onboard MT8870 complex frequency decoding chip
Onboard voice input interface
Onboard 5 LED indicator, easy to view the output status
The basic chip has been the main pin leads
PCB size of 26.5 (mm) x24.5 (mm)

Applications
Receiver system for British Telecom (BT) or CEPT Spec (MT8870D-1)
Paging systems
Repeater systems/mobile radio
Credit card systems
Remote control
Personal computers
Telephone answering machine

Package Includes:
1 x DTMF Voice Decoding Module MT8870