LE9541DUQCT

Telecom Overview

The LE9541DUQCT is a single-channel ringing Subscriber Line Interface Circuit (SLIC) manufactured by Microchip Technology. It operates on a 3.3V supply and features a serial interface with reset for operational control and status reporting. The device supports up to -145 V ringing battery voltage and provides DC loop closure, ring trip, and thermal shutdown protection. It utilizes a 6x6 mm 40-pin QFN package in tape and reel format. Electrical specifications include a power consumption of 36 mW in scan state and longitudinal-to-metallic balance of 52 dB.

Telecom Feature Summary

• Single-channel high-voltage ringing SLIC functionally equivalent to channel 1 of the LE9540
• Pin-to-pin compatible with the LE9540 to enable dual one or two channel PCB designs
• High bandwidth design supporting 7-kHz wideband applications
• Integrated test load switch supports integrated test algorithms

Telecom Applications

• Short-loop residential gateways optimized for Broadcom BCM338x/BCM339x SoCs
• Voice loops found in short-loop cable applications
• GR909 testing environments

Telecom Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance and environmental classifications prior to integration. Ensure proper handling procedures are followed due to moisture sensitivity level 3 classification. Cross-reference datasheet revisions to ensure compatibility with current manufacturing standards.

Telecom Selection Notes

Select this component when a single-channel solution is required that maintains pin compatibility with dual-channel LE9540 designs. Consider the -145 V ringing battery capability for specific line requirements. Evaluate the 6x6 mm 40-pin QFN footprint against available board space constraints. Verify interface compatibility with target Broadcom SoC families before finalizing the bill of materials.

Telecom Part Context

The LE9541DUQCT belongs to the VE950 Series of Ringing Subscriber Line Interface Circuits from Microsemi Corporation. It serves as a specialized interface for telecom applications, specifically designed to handle battery feed, ringing, and supervision functions. The device complements the dual-channel LE9540 by offering a dedicated single-channel alternative within the same package family.

Telecom Replacement Considerations

The LE9540DUQCT is a confirmed substitute part number. It offers dual-channel functionality while maintaining pin-to-pin compatibility with the LE9541's package layout.