MAX5940DESA+

Overview

The MAX5940DESA+T is a Power-over-Ethernet (PoE) interface controller designed for IEEE 802.3af Powered Devices. It operates within a supply voltage range of 64 V to 64 V and supports an operating temperature range from -40°C to +85°C. The device features a maximum power dissipation of 470 mW and draws a typical operating supply current of 1 mA. It is housed in an SO-8 surface-mount package.

Feature Summary

• Provides dedicated interface control for IEEE 802.3af compliant PoE applications
• Integrates detection and classification logic for powered devices
• Supports hot-plug insertion without system disruption

Applications

• IEEE 802.3af Powered Device integration
• Power-over-Ethernet endpoint controllers
• Network interface circuitry design

Procurement Notes

Verify the exact suffix designation, as the provided model lacks the 'T' tape-and-reel indicator found in official distributor listings. Confirm RoHS compliance status through the manufacturer's specific documentation. Ensure the source document explicitly identifies the component as the MAX5940 series before procurement.

Selection Notes

Select this component for designs requiring strict adherence to IEEE 802.3af standards. Verify that the SO-8 package fits the board layout constraints. Check if the fixed 64 V supply requirement aligns with the target PoE power sourcing equipment specifications.

Part Context

This part belongs to the MAX5940 family of Power-over-Ethernet controllers manufactured by Analog Devices / Maxim Integrated. It serves as a specialized interface solution for managing power delivery over Ethernet cables in networked electronic systems.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided data.