MAX5941ACSE+T

Overview

The MAX5941ACSE+T is a Power-Over-Ethernet interface and PWM controller designed for IEEE 802.3af-compliant powered devices. It integrates a power switch IC with detection logic to manage DC power distribution over Ethernet cabling. The component operates within a supply voltage range of 30 V to 67 V and supports surface-mount installation in an 8-pin SOIC-Narrow package. It functions as a complete solution for powering networked equipment while maintaining data integrity.

Feature Summary

• Integrates power switch and interface control for simplified PoE powered device design
• Complies with IEEE 8023af standards for power classification and detection
• Includes PWM controller functionality for managing external power conversion stages

Applications

• IEEE 802.3af compliant Powered Devices
• Power-over-Ethernet interface circuits
• DC power distribution systems for network equipment

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing, as this affects handling and assembly compatibility. Confirm the manufacturer designation remains Analog Devices / Maxim Integrated. Check current lifecycle status as end-of-life notifications may impact long-term availability. Ensure the part number matches the exact electrical specifications required for your 802.3af implementation.

Selection Notes

Select this component for designs requiring integrated PoE detection and switching in a compact form factor. It is suitable for applications needing compliance with IEEE 802.3af standards without separate discrete detection controllers. Consider the 8-pin SOIC-Narrow package constraints for PCB layout. Verify that the 30 V to 67 V operating range aligns with your system's power budget and cable drop requirements.

Part Context

This part belongs to the MAX5940/MAX5941 family of PoE controllers from Maxim Integrated. It serves as a specialized interface solution for distributing DC power alongside data on Ethernet lines. The series is designed to simplify the implementation of powered endpoints in network infrastructure by combining detection, classification, and power management functions.

Replacement Considerations

The MAX5940AESA+ is a related variant within the same product family offering similar PoE interface capabilities. Verify pinout compatibility and specific feature differences before substitution. Both parts address IEEE 802.3af powered device requirements.