MT88L70ANR1

Telecom Overview

The MT88L70ANR1 is a single-channel Dual-Tone Multi-Frequency (DTMF) receiver integrated circuit manufactured by Microchip Technology. Designed for telecommunications applications, it detects and decodes DTMF signals within standard frequency bands. The device operates on a single supply voltage ranging from 2.7V to 3.6V with a typical supply current of 2mA. It is housed in a 18-SOIC surface-mount package with a width of 7.50mm. The component supports an extended industrial operating temperature range from -40°C to +85°C and complies with RoHS3 standards.

Telecom Feature Summary

• Integrated DTMF signal detection and decoding functionality for single-channel communication interfaces
• Low-power operation suitable for battery-powered or energy-efficient telecom equipment
• Industrial-grade thermal stability ensuring reliable performance across wide temperature variations

Telecom Applications

• Telecommunications interface circuits requiring DTMF tone recognition
• Public switched telephone network (PSTN) terminal equipment
• Voice over IP (VoIP) gateway input stages

Telecom Procurement Notes

Verify the specific suffix 'ANR1' against official Microchip documentation to confirm pinout and packaging details, as distributor listings may vary. Confirm end-of-life status and last-time-buy dates through authorized channels before design finalization. Ensure compatibility with existing PCB footprint specifications for the 18-SOIC package.

Telecom Selection Notes

Select this component when a dedicated hardware solution for DTMF reception is required in low-power telecom designs. Compare against alternative receivers based on supply voltage constraints and package size limitations. Verify that the 18-SOIC form factor fits the target board layout and that the 2.7V-3.6V supply range aligns with the system power architecture.

Telecom Part Context

The MT88L70 series belongs to Microchip's portfolio of specialized telecommunications interface ICs. This specific model represents a single-channel receiver variant, distinct from multi-channel or transmitter-receiver combinations. It serves as a foundational component for legacy and modern telephony systems requiring robust tone decoding capabilities.

Telecom Replacement Considerations

Check Microchip's Product Change Notification (PCN) documents for any approved pin-to-pin replacements or updated suffixes. No direct public substitute part numbers are confirmed in available sources.