MAX5945CAX+T

Overview

The MAX5945CAX+T is a four-channel Power over Ethernet (PoE) controller compliant with the IEEE 802.3af standard, designed for use as a Powered Device (PD). It supports a supply voltage range of 32V to 60V and operates within a temperature range of -40°C to +85°C. The device features a maximum power output of 15.4 W per channel and draws a typical supply current of 4.2 mA. Packaged in a 36-lead SSOP, it integrates detection, classification, and power management functions required for PoE endpoint applications.

Feature Summary

• Integrates full IEEE 802.3af-compliant logic for detection, classification, and power delivery control.
• Supports simultaneous operation across four independent channels for multi-port connectivity.
• Includes internal protection mechanisms against reverse polarity and short circuits.
• Features low quiescent current consumption to optimize system efficiency.

Applications

• IP cameras and video surveillance systems
• Wireless access points and network switches
• VoIP phones and conference equipment
• Industrial IoT sensor nodes

Procurement Notes

Verify component authenticity through authorized distributors due to discontinuation status. Confirm RoHS compliance and lead-free solder finish specifications. Check for alternative packaging options such as tape and reel variants if available. Ensure storage conditions meet moisture sensitivity level requirements prior to reflow soldering processes.

Selection Notes

Select this controller for designs requiring strict adherence to 802.3af standards with four-channel capability. Consider thermal dissipation requirements given the 15.4 W maximum power limit. Evaluate PCB layout constraints associated with the 36-SSOP package dimensions. Compare against newer standards like 802.3at if higher power budgets are necessary.

Part Context

Part of the Maxim Integrated MAX5945 family of PoE controllers. Designed specifically for endpoint insertion into Ethernet networks. Shares functional architecture with other members of the series but differs in pinout and specific electrical characteristics. Manufactured by Analog Devices Inc./Maxim Integrated.

Replacement Considerations

Public confirmed substitute part numbers are not explicitly documented in the provided source material. Users should consult official manufacturer documentation for cross-reference recommendations or contact sales representatives for valid alternatives.