LE9531DMQC

Telecom Overview

The LE9531DMQC is a discontinued telecommunications integrated circuit manufactured by Microchip Technology. It functions as a single-channel Subscriber Line Interface Circuit (SLIC) designed for voice communication applications. The device operates with a parallel interface and requires a 3.3V supply voltage, drawing a typical supply current of 40mA. It is housed in a 28-lead Quad Flat No-leads (QFN) package. The component was officially declared End-of-Life on March 7, 2016, and is no longer in production.

Telecom Feature Summary

• Integrated Subscriber Line Interface Circuit (SLIC) functionality for telecom applications
• Single-channel architecture supporting parallel interface connections
• Operates on a 3.3V power supply rail

Telecom Applications

• Telecommunications subscriber line interfaces
• Voice communication channel processing
• Analog front-end circuits for telephony systems

Telecom Procurement Notes

This component has reached End-of-Life status as of March 7, 2016. It is not available from the manufacturer or authorized distributors. Verification of authenticity is critical if sourcing from third-party suppliers, as the part is obsolete. Buyers should confirm the specific package variant and ensure compatibility with replacement components before procurement attempts.

Telecom Selection Notes

Designers must account for the discontinuation of this part when selecting components for new hardware. The LE9531DMQC is functionally similar to the LE9541DUQCT, which serves as a recommended replacement within the same product family. Selection should prioritize verified substitute parts that maintain pinout and electrical compatibility to ensure seamless integration into existing telecom designs.

Telecom Part Context

The LE9531DMQC belongs to the LE9531 series of Subscriber Line Interface Circuits produced by Microchip Technology. This series provides analog interface solutions for connecting telephone handsets to digital switching networks. The DMQC suffix specifically denotes the 28-QFN package variant, distinguishing it from other packaging options like the TQFP versions within the same functional family.

Telecom Replacement Considerations

The LE9541DUQCT is documented as a similar replacement part for the LE9531DMQC. Engineers should verify pin compatibility and electrical specifications between the legacy component and the LE9541DUQCT to ensure proper substitution in existing circuits.