MT8870 DTMF Audio/Speech Decoding Telephone Module

The MT8870 Tone Decoder module is an excellent choice for adding dual tone multi-frequency (DTMF) decoding capabilities to your project. This module interprets incoming tones, commonly found in touch-tone devices like phones, and generates a coded output suitable for connection to microcontrollers.

Features and Functionalities of this module include:

1. DTMF Decoding: Interprets incoming dual-tone signals and generates a coded output.

2. Versatile Compatibility: Output can be connected to various microcontrollers, expanding the functionality of your project.

3. Onboard LEDs: Features onboard LEDs to indicate the state of the received signal, aiding in debugging and troubleshooting.

4. Mobile Phone Integration: Can be connected to a mobile phone via a 3.5mm to 3.5mm cable. By dialing into the phone from another mobile and using the keypad, tones are produced and interpreted by the module, enabling control of diverse projects.

5. MT8870 IC: Utilizes the MT8870 Tone Decoder IC, developed by MITEL, which is a complete DTMF receiver. It separates the received DTMF signal into high-frequency and low-frequency groups, decodes the key value, and outputs it in binary form via four lines (Q1, Q2, Q3, Q4).

With its ease of use, compatibility with standard sockets, and robust decoding capabilities, the MT8870 Tone Decoder module offers a reliable solution for integrating DTMF decoding into your project.

Package Includes:

1 x MT8870 DTMF Audio/Speech Decoding Telephone Module