MT9172ANR1

Telecom Overview

The MT9172ANR1 is a Digital Network Interface Circuit (DNIC) manufactured by Microchip Technology, originally designed by Zarlink Semiconductor. It serves as a pin-for-pin compatible replacement for the MT8972, enabling high-speed full-duplex digital transmission over a single twisted wire pair. The device supports selectable line rates of 80 or 160 kbit/s and features adaptive echo cancellation to extend transmission distances up to 4 km. It is ISDN compatible with 2B+D data format support and includes frame synchronization and clock extraction capabilities. The component operates on a single 5 V supply with low power consumption, typically around 50 mW.

Telecom Feature Summary

• Provides full-duplex digital transmission over a single twisted wire pair
• Features adaptive echo cancellation for extended reach
• Supports ISDN compatible 2B+D data formats
• Integrates frame synchronization and clock extraction

Telecom Applications

• Digital subscriber lines
• High speed data transmission over twisted wires
• Digital PABX line cards and telephone sets
• 80 or 160 kbit/s single chip modem applications

Telecom Part Context

The MT9172ANR1 belongs to the MT917x family of Digital Subscriber Interface Circuits. It is functionally equivalent to the MT9172AN but distinguished by its reel packaging configuration, indicated by the 'R' suffix in the part number. This component is part of the ST-BUS compatible family designed for telecommunications interface applications.