MT8880CN1

Telecom Overview

The MT8880CN1 is a dual-tone multi-frequency (DTMF) transceiver manufactured by Microchip Technology. It integrates complete DTMF transmitter and receiver functions within a single CMOS chip, designed for central office quality performance. The device operates on a single 5V power supply with a maximum voltage of 5.25V and a minimum of 4.75V, drawing a typical operating current of 7mA. It supports an industrial temperature range from -40°C to +85°C and is housed in a 20-pin PDIP package. The component features low power consumption and includes adjustable guard times and automatic tone burst modes for precise signal handling.

Telecom Feature Summary

• Integrates complete DTMF transmitter and receiver capabilities on a single CMOS chip
• Provides central office quality signal processing with low power consumption
• Supports microprocessor interface with standard control logic
• Includes adjustable guard time and automatic tone burst mode functionality

Telecom Applications

• Telephone communication systems requiring DTMF signaling
• Computer-to-computer data transmission via telephone lines
• Telecommunications equipment interfacing with microcontrollers

Telecom Procurement Notes

Verify availability status as the MT8880 series may be discontinued or subject to limited supply. Confirm package type and manufacturer specifications against original design requirements. Check for lead times and end-of-life notifications from authorized distributors. Ensure compatibility with existing system interfaces before procurement.

Telecom Selection Notes

Select this component for applications requiring integrated DTMF generation and decoding. Verify that the 20-pin PDIP package fits the target PCB layout. Ensure the system provides a stable 5V supply within the specified tolerance. Consider the operating temperature range if deployed in harsh environments. Confirm microprocessor compatibility for control interface integration.

Telecom Part Context

The MT8880CN1 belongs to the MT8880 family of DTMF transceivers originally developed by Mitel and later acquired by Microchip Technology. This family is widely recognized for its use in telephony applications where reliable dual-tone multi-frequency signaling is required. The CN1 suffix typically denotes a specific package variant within the broader MT8880 product line.

Telecom Replacement Considerations

Compatible substitutes include the MT8880CE and MT8880CSR1. Verify pinout compatibility and electrical specifications before substitution. Ensure the replacement part meets the same temperature and voltage requirements.