MAX5942ACSE+T

Overview

The MAX5942ACSE+T is a Power-over-Ethernet (PoE) interface and PWM controller designed for Powered Devices (PDs). It complies with the IEEE 802.3af standard, providing detection and classification signatures alongside an integrated isolation switch. The device operates within a supply voltage range of 18 V to 67 V and supports a maximum power dissipation of 12.95 W. It features a 16-SOIC package and functions across a temperature range of 0°C to 70°C.

Feature Summary

• Complies with IEEE 802.3af standards for PoE detection and classification
• Integrates a DC-DC PWM controller suitable for flyback and forward converters
• Includes an internal isolation switch with programmable inrush current control

Applications

• Powered Device (PD) interface design
• Isolated DC-DC converter systems
• Non-isolated DC-DC converter designs

Procurement Notes

Verify component authenticity through authorized channels due to discontinuation status. Confirm RoHS compliance and specific suffix variations against official datasheets. Check for obsolescence notices from Analog Devices. Ensure supply chain stability as availability may be restricted or limited.

Selection Notes

Select this component for applications requiring strict IEEE 802.3af compliance. Evaluate thermal management capabilities given the 12.95 W power dissipation limit. Consider the 16-SOIC footprint constraints during PCB layout. Verify input voltage ranges match the target system's 18 V to 67 V operating window.

Part Context

Part of the Maxim Integrated MAX5942 family, which provides complete PoE solutions. This series integrates PD interface logic with power conversion control, simplifying design complexity for networked devices requiring simultaneous data and power transmission over Ethernet cables.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult manufacturer resources for potential end-of-life alternatives.