LE9540DUQCT

Telecom Overview

The LE9540DUQCT is a dual-channel Subscriber Line Interface Circuit (SLIC) manufactured by Microchip Technology. It operates on a single 3.3V supply voltage and features a serial interface for control. The device is housed in a 40-VFQFN exposed pad package with dimensions of 6x6 mm, designed for surface-mount installation. It supports two independent circuit channels within a single integrated circuit. The component is classified as active and compliant with RoHS3 standards.

Telecom Feature Summary

• Integrates dual subscriber line interface circuits for telecommunication applications
• Utilizes a serial communication interface for configuration and control
• Operates exclusively on a 3.3V power supply rail

Telecom Applications

• Telecommunications equipment requiring user line interfacing
• Digital subscriber line (DSL) access multiplexers
• Voice over IP (VoIP) gateway hardware

Telecom Procurement Notes

Verify the specific suffix DUQCT to confirm the tape-and-reel packaging format, which differs from tray options available in the same family. Confirm the 40-QFN pinout matches the target PCB footprint. Ensure the design accounts for the exposed thermal pad requirements associated with this package type during assembly.

Telecom Selection Notes

Select this part when a dual-channel SLIC solution is required with serial control capabilities. Compare against the LE9540CUQC if tray packaging is preferred instead of reel packaging. Verify that the 3.3V logic levels are compatible with the host microcontroller or processor driving the serial interface signals.

Telecom Part Context

This component belongs to the LE9540 series of telecom interface ICs. It serves as a specialized interface between digital processing units and analog telephone lines. The device replaces older discrete solutions by integrating necessary line driving and sensing functions into a compact semiconductor package.

Telecom Replacement Considerations

The LE9540CUQC is an alternative package variant within the same product family. Verify if the tray packaging of the CUQC variant meets production needs without altering the functional electrical characteristics.