MT8880 Integrated DTMF Transceiver – DIP-20

Description

The MT8880 is a comprehensive integrated Dual Tone Multi-Frequency (DTMF) transceiver. It combines a DTMF generator with a sophisticated call progress filter, enabling it to both transmit and receive DTMF signals. This makes it an ideal choice for telephony applications, remote control systems, and automated signaling hardware.

The IC is designed to interface directly with standard microprocessors via a parallel bus, allowing the host controller to easily generate specific tone pairs or decode incoming signals. Its precision architecture ensures high-fidelity tone generation and reliable detection, even in the presence of noise, making it a standard for traditional phone-line based communications.

Note: Product images are for illustrative purposes only. Please refer to the official datasheet in the attachment section for detailed timing diagrams, tone frequency tables, and application circuit schematics.

Features

• Dual Functionality: Integrated DTMF transmitter and receiver (transceiver) in a single chip.
• Precision Generation: Capable of generating all 16 standard DTMF tone pairs.
• Call Progress Filter: Built-in detection for call progress tones.
• Microprocessor Interface: Standard parallel bus interface for seamless MCU integration.
• Low Power: Designed for efficient operation in standard telecommunications equipment.
• Package: DIP-20 through-hole package, suitable for easy breadboarding and prototyping.

Benefits

• All-in-One Solution: Eliminates the need for separate encoder and decoder ICs, reducing board space.
• Versatile: Highly programmable, allowing for custom signaling applications beyond just standard telephony.
• High Accuracy: Integrated filtering minimizes errors in tone detection, ensuring high reliability in noisy lines.

Applications

• DTMF Telephony and Signaling Systems
• Remote Control via Phone Lines
• Home Automation Systems (DTMF-based)
• Private Branch Exchange (PBX) Equipment
• Interactive Voice Response (IVR) Interfaces

Package Includes

• 1 x MT8880 DTMF Transceiver IC (DIP-20)

Specifications