LE88266DLCT

Telecom Overview

The LE88266DLCT is a dual-channel Automatic Battery Switching (ABS) VoicePort device manufactured by Microchip Technology. It implements a universal telephone line interface from the high-voltage subscriber line to digital interfaces, providing complete BORSCHT functions for two channels in a single device. The component operates within a supply voltage range of 4.75V to 35V and utilizes an 80-pin exposed Leadless Quad Flat Package (eLQFP). It supports PCM, MPI, or GCI interfaces with selectable coding formats including G.711 µ-law, A-law, and 16-bit linear. The device features integrated high-voltage switching regulator controllers and wideband 16 kHz sampling mode capabilities.

Telecom Feature Summary

• Integrated power management with high-voltage switching regulator controllers generating supplies for VBH, VBM, and VBL
• Worldwide programmability for input impedance, balance impedance, gain, DC feed voltage, and ringing parameters
• Supports pin-selectable PCM/MPI or GCI interfaces with G.711 and 16-bit linear coding options
• Includes powerful signal generator for universal Caller ID generation and up to four simultaneous tones

Telecom Applications

• Voice-enabled Cable EMTAs
• DSL Gateways and Integrated Access Devices (IADs)
• Fiber to the Building/Home (FTTB/H) Optical Network Terminals (ONT)
• Wireless Local Loop (WLL) systems and PBX units

Telecom Procurement Notes

Verify the specific ordering suffix 'T' confirms tape and reel packaging as per manufacturer documentation. Confirm the base part number corresponds to the 80-pin eLQFP package variant. Ensure compliance with RoHS directives and check current product status, as legacy telecommunications components may have availability constraints.

Telecom Selection Notes

Select this component for applications requiring dual-channel voice line interfacing with software-defined parameters. Verify that the system architecture supports the required digital interfaces (PCM, MPI, or GCI). Ensure the design accommodates the external components needed for the integrated switching regulators and relay driver. Validate that the 80-pin eLQFP footprint matches the PCB layout requirements.

Telecom Part Context

This device belongs to the VE880 Series Wideband VoicePort family, designed for voice-over-broadband systems. It serves as a software-programmable line interface solution for multiple country applications worldwide. The series integrates DSP codec functions and supervision processing to reduce system cost and development cycles for telecom equipment manufacturers.

Telecom Replacement Considerations

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