LE88286DLCT

Telecom Overview

The LE88286DLCT 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 with a supply voltage range of 4.75V to 35V and utilizes an 80-pin exposed leaded quad flatpack (eLQFP) package. It supports PCM, MPI, or GCI interfaces and includes integrated high-voltage switching regulator controllers.

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 current limit
• Supports up to 110-Vpk internal balanced ringing with programmable DC offset
• Universal Caller ID generation capability supporting 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

Telecom Procurement Notes

Verify component authenticity through authorized distribution channels as this part number is obsolete. Confirm that the specific ordering suffix corresponds to the required 80-pin eLQFP package configuration. Ensure compliance with RoHS directives when sourcing replacement inventory or verifying environmental status for existing stock.

Telecom Selection Notes

Select this model specifically for applications requiring 120-V ringing capabilities optimized for short and medium loop lengths. Verify compatibility with the required digital backplane interface, ensuring support for PCM, MPI, or GCI protocols. Confirm that system software integration aligns with the available VoicePath API-II tools for calibration and line configuration.

Telecom Part Context

This component belongs to the LE88266/286 Wideband VoicePort series designed for voice-over-broadband systems. It serves as a highly functional line interface solution for multiple country applications worldwide. The device integrates DSP codec functions and supervisory processing to drive high-voltage subscriber telephone lines efficiently.

Telecom Replacement Considerations

Public confirmed substitute: LE9622RQCT.