LE9540DUQC

Telecom Overview

The LE9540DUQC is a dual-channel Subscriber Line Interface Circuit (SLIC) manufactured by Microchip Technology. Designed for telecommunications applications, this integrated circuit operates at a supply voltage of 3.3 V and supports serial interface communication. The device is housed in a 40-pin VFQFN package with dimensions of 6x6 mm, featuring exposed pads for surface mount installation. It complies with RoHS3 standards and carries an MSL rating of 3 (168 hours). The component is classified under telecom interface ICs and is intended for use in subscriber line interface concepts.

Telecom Feature Summary

• Dual-channel architecture for simultaneous subscriber line interfacing
• Integrated SLIC functionality within a compact QFN footprint
• Serial interface capability for digital control and configuration

Telecom Applications

• Subscriber line interface circuits
• Telecommunications equipment
• POTS line interface modules

Telecom Procurement Notes

Verify the specific suffix 'DUQC' against the manufacturer's current datasheet to confirm pinout and electrical characteristics match design requirements. Ensure ESD handling procedures are followed due to the moisture sensitivity level. Confirm that the 40-QFN package dimensions align with the PCB layout constraints before finalizing procurement orders.

Telecom Selection Notes

Select this component when a dual-channel SLIC solution is required for 3.3 V systems. The 40-QFN package offers a space-efficient option for dense PCB layouts. Verify compatibility with existing serial control protocols used in the target telecommunications system. Consider thermal dissipation requirements associated with the exposed pad design during the selection process.

Telecom Part Context

This part belongs to the LE9540 series of telecom interface ICs from Microchip Technology. The series focuses on providing integrated solutions for subscriber line interfaces. The DUQC variant specifically denotes the 40-pin QFN packaging option. This family of components is designed to simplify the design of telephony hardware by integrating necessary analog and digital functions into a single chip.

Telecom Replacement Considerations

Check for direct pin-to-pin replacements within the LE9540 family. Verify if other Microchip SLICs offer similar channel counts and voltage specifications. Ensure any substitute maintains the same package type or requires adapter considerations.