MAX5940CESA+

Overview

The MAX5940CESA+ is a Power-Over-Ethernet (PoE) interface controller designed for IEEE 802.3af compliant Powered Devices. It operates within a supply voltage range of 30 V to 67 V and supports a maximum power dissipation of 470 mW. The device functions reliably across an extended temperature range from -40°C to +85°C. Packaged in an 8-SOIC surface-mount format, it integrates essential control logic for PoE detection and classification.

Feature Summary

• Supports IEEE 802.3af Powered Device interface protocols
• Integrated detection and classification circuitry
• Operates with wide input voltage tolerance

Applications

• IEEE 802.3af Powered Device implementations
• Power-over-Ethernet endpoint controllers
• Network interface hardware design

Procurement Notes

Verify component authenticity through authorized Analog Devices channels due to limited availability status. Confirm package integrity and RoHS compliance upon receipt. Cross-reference ordering suffixes against official datasheets to ensure functional equivalence. Validate supply chain documentation for traceability requirements before integration into production systems.

Selection Notes

Select this component for applications requiring strict adherence to IEEE 802.3af standards. Ensure the design accommodates the specified 30 V to 67 V operating window. Consider thermal management strategies given the 470 mW dissipation limit. Verify that the SOIC-8 footprint matches the PCB layout constraints and that the industrial temperature range meets environmental specifications.

Part Context

Part of the MAX5940 series, which provides standardized solutions for PoE interfaces. This specific variant utilizes the CESA+ designation indicating commercial temperature grade and lead-free packaging. It serves as a foundational component for network equipment requiring remote power delivery capabilities.

Replacement Considerations

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