MT88E46ASR1

Telecom Overview

The MT88E46ASR1 is a telecommunications interface integrated circuit manufactured by Microchip Technology, specifically designed as a Caller ID decoder. It operates within a supply voltage range of 2.7V to 3.6V and draws a typical supply current of 2mA. The device is housed in a 16-pin SOIC package with a width of 0.295 inches (7.50mm). It supports an operating temperature range from -40°C to +85°C, suitable for industrial applications. The component is classified as obsolete and has been officially discontinued by the manufacturer.

Telecom Feature Summary

• Integrated Caller ID decoding functionality for telephone line signals
• Low power consumption design suitable for battery-operated or energy-efficient systems
• Industrial temperature rating for reliable operation in harsh environments

Telecom Applications

• Caller ID display units for residential and business telephones
• Telecommunications equipment requiring signal identification
• Legacy PBX systems and voice mail interfaces

Telecom Procurement Notes

This component is officially obsolete and no longer in production. Verification of availability is restricted to existing distributor stock or surplus markets. Buyers must confirm the specific revision level and packaging type, such as cut tape or reel, as original manufacturing runs are exhausted. Compliance with RoHS standards should be verified against available datasheets prior to integration into new designs.

Telecom Selection Notes

Engineers replacing this part should evaluate modern Caller ID ICs that support similar voltage ranges and pin configurations. Compatibility checks must include signal processing algorithms for Bell 202 and FSK protocols. Alternative solutions may require firmware adjustments if the replacement device utilizes different control registers or interface timing requirements compared to the legacy MT88E46 architecture.

Telecom Part Context

The MT88E46 belongs to the MT88 series of telecom interface chips produced by Microchip Technology. This family typically includes DTMF receivers and Caller ID decoders used in analog telephone systems. The 'ASR1' suffix indicates a specific package variant and temperature grade within the broader product line, which has largely been superseded by more integrated digital telephony solutions.