LE79Q2284MVCT

Telecom Overview

The LE79Q2284MVCT is a Quad Intelligent Subscriber Line Audio-processing Circuit (ISLAC) manufactured by Microchip Technology. It operates in an 80-pin LQFP package with tape and reel packing. The device provides four-channel universal telephone line interface functionality when combined with VE790 series ISLIC devices. It supports selectable PCM/MPI or GCI digital interfaces, general purpose I/O pins, and +3.3 V DC operation.

Telecom Feature Summary

• High-performance digital signal processor for programmable control of line card functions including codec/filter, gain, impedance, and transhybrid balance
• Integrated self-test and line-test capabilities to resolve faults to the line or line circuit
• Supports internal ringing generation and integrated ring-trip detection with automatic or manual modes
• Selectable PCM/MPI or GCI digital interfaces supporting master clock frequencies from 512 kHz to 8.192 MHz

Telecom Applications

• Voice over IP/DSL Integrated Access Devices (IAD)
• Smart Residential Gateways (SRG) and Home Gateways/Routers
• Cable Telephony Network Interface Units (NIU) and Cable Modems
• Fiber in the Loop (FITL) and Fiber to the Home (FTTH)

Telecom Procurement Notes

Verify the ordering suffix 'T' indicates tape and reel packaging as specified in the datasheet. Confirm the component is the LE79Q2284 variant within the Le79228 family. Ensure compatibility with VE790 series ISLIC devices for complete line card implementation. Check RoHS compliance status for the green package.

Telecom Selection Notes

Select this component for designs requiring four-channel subscriber line audio processing. Ensure the system architecture supports the required +3.3 V DC operation. Verify that the chosen digital interface mode (PCM or GCI) aligns with the host processor requirements. Consider the 80-pin LQFP footprint for PCB layout constraints.

Telecom Part Context

This part belongs to the Le79228 Quad ISLAC device family within the VE790 series voice chip sets. It is designed to work exclusively with VE790 series ISLIC devices to implement high-density, multi-channel line cards. The technology was originally developed by Zarlink Semiconductor before acquisition by Microchip Technology.

Telecom Replacement Considerations

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