MT9072AV2

Telecom Overview

The MT9072AV2 is an octal T1/E1/J1 framer integrated circuit manufactured by Microchip Technology (formerly Zarlink). It integrates eight fully independent, feature-rich framers within a single package. The device supports software-selectable T1, E1, and J1 modes, complying with Telcordia, ANSI, ETSI, and ITU-T standards. It operates on a 3.3 V supply with 5 V tolerant inputs and features selectable 2.048 Mbit/s or 8.192 Mbit/s serial buses for data and signaling. The component is housed in a 220-pin PBGA package and functions within an operating temperature range of -40°C to +85°C.

Telecom Feature Summary

• Integrates eight fully independent framing channels supporting T1, E1, and J1 protocols
• Includes embedded floating HDLC per framer with transparent mode capabilities
• Provides comprehensive performance monitoring with maskable error counters and alarms
• Supports flexible backplane interfaces including ST-BUS and GCI

Telecom Applications

• T1/E1/J1 add/drop multiplexers
• V5.1 and V5.2 access network interfaces
• CO and PBX equipment interfaces
• Primary rate ISDN nodes
• Digital Cross-connect Systems (DCS)

Telecom Procurement Notes

Verify the specific ordering suffix '2' indicates lead-free tin/silver/copper plating and commercial temperature range operation (-40°C to +85°C). Confirm the package type is the 220-pin PBGA. Ensure compatibility with the host microprocessor interface requirements, specifically the 16-bit parallel Motorola or Intel non-multiplexed bus configuration.

Telecom Selection Notes

Select this component when designing systems requiring multiple independent T1, E1, or J1 framing channels in a compact footprint. It is suitable for applications needing robust alarm detection, extensive performance monitoring, and support for various line coding schemes such as B8ZS and HDB3. Verify that the system architecture can accommodate the required 3.3 V power supply and 5 V tolerant I/O levels.

Telecom Part Context

This device belongs to the MT9072 family of multi-port framing devices originally developed by Zarlink Semiconductor Inc., which was acquired by Microsemi and later became part of Microchip Technology. The MT9072 series is designed for telecommunications infrastructure, providing high-density framing solutions for digital carrier networks.

Telecom Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.