LE79271AMQCT

Telecom Overview

The LE79271AMQCT is a Next Generation Carrier Chipset (NGCC) Subscriber Line Interface Circuit (SLIC) manufactured by Microchip Technology. It operates with 3.3 V and battery supplies, supporting two negative and one positive battery configuration. The device provides dual battery operation for system power saving with automatic switching and intelligent thermal management. It supports 85 Vrms internal ringing in balanced or unbalanced modes and delivers 5 REN with DC offset. Integrated capabilities include line-test functions for leakage, loop resistance, capacitance, and foreign voltage sensing, alongside metering at 12 kHz and 16 kHz.

Telecom Feature Summary

• Optimized for triple-play applications to minimize POTS transients and ensure best-in-class GR-844 equivalent testing performance.
• Integrated self-test and line-test capabilities for subscriber line diagnostics including leakage, loop resistance, and fault detection.
• Dual battery operation with automatic switching and intelligent thermal management for efficient system power usage.
• Supports 85 Vrms internal ringing generation and compatible with inexpensive protection networks.

Telecom Applications

• High-density universal telephone line interface implementation
• Triple-play application line interfaces
• Subscriber line diagnostics and fault resolution

Telecom Procurement Notes

Verify the specific ordering suffix AMQCT against the official datasheet to confirm package type and temperature range. Ensure compatibility with the LE79238 SLAC device for complete NGCC functionality. Confirm supply voltage requirements match the 3.3 V and battery specifications. Validate that the component meets GR-844 equivalent testing standards for your deployment region.

Telecom Selection Notes

Select this component when designing DSL-friendly, software-programmable line interfaces requiring high density. Consider the integrated test load switch and metering capabilities if diagnostic features are required. Ensure the design supports the necessary 3.3 V and battery supply rails. Evaluate the need for 85 Vrms ringing support and dual battery operation for power efficiency.

Telecom Part Context

The LE79271 is part of the Next Generation Carrier Chipset (NGCC) family from Microchip Technology. It is designed to work in conjunction with the LE79238 SLAC device to create a complete subscriber line interface solution. This chipset enables low-cost, high-performance designs applicable worldwide with fully programmable AC, DC, and signaling parameters.

Telecom Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify functional equivalence with other NGCC components or legacy SLIC devices only through official Microchip cross-reference tools.