MT8870DE1-1

Telecom Overview

The MT8870DE1-1 is a single-channel Dual-Tone Multi-Frequency (DTMF) receiver manufactured by Microchip Technology. It operates within a supply voltage range of 4.75V to 5.25V and draws a typical supply current of 3mA. The device is housed in an 18-PDIP package with a body width of 0.300 inches (7.62mm). It supports through-hole mounting and functions reliably across an industrial temperature range of -40°C to +85°C. This component serves as a complete DTMF receiver solution for telecommunications interfaces.

Telecom Feature Summary

• Integrates internal gain-setting amplifier for signal conditioning
• Provides adjustable guard time to prevent false decoding
• Delivers central office quality performance standards

Telecom Applications

• Telephone line transfer operations
• Remote control systems via telephone networks
• Computerized telephony receiving systems

Telecom Procurement Notes

Verify component status carefully as the MT8870 series has been subject to discontinuation notices from Microchip Technology. Confirm availability through authorized distributors or surplus channels, as standard production may be limited. Ensure compatibility with existing PCB footprints for 18-DIP packages during sourcing.

Telecom Selection Notes

Select this part when a dedicated hardware DTMF decoder is required for legacy or specific telecom applications. Compare against surface-mount variants like the MT8870DSR1 if board space constraints exist. Verify that the 18-pin DIP form factor aligns with the target assembly process and enclosure requirements.

Telecom Part Context

This component belongs to the MT8870 family of DTMF receivers produced by Microchip Technology. It shares functional compatibility with related models such as the MT8870D and MT8870DS1. The DE1-1 suffix specifically denotes the 18-pin plastic dual in-line package variant within this product line.

Telecom Replacement Considerations

Functionally compatible replacements include the MT8870D and MT8870DS1. These parts maintain similar DTMF reception capabilities but may differ in package type or manufacturing origin. Verify pinout consistency before substitution.