MAX14821EWA+T

Drivers, Receivers, Transceivers Overview

The MAX14821EWA+T is an IO-Link device transceiver designed for sensor and actuator applications. It supports IO-Link versions 1.0 and 1.1.2 with COM1, COM2, and COM3 data rates up to 230.4 kbps. The device operates on a VCC supply of 9V to 36V and includes integrated 5V and 3.3V linear regulators. It features configurable push-pull, PNP, or NPN drivers for C/Q and DO outputs, each capable of sourcing or sinking up to 100mA. The component provides reverse-polarity, short-circuit, and thermal protection, along with extensive fault monitoring via an SPI interface.

Drivers, Receivers, Transceivers Feature Summary

• Configurable driver output modes including push-pull, high-side (PNP), and low-side (NPN) for both C/Q and DO channels.
• Integrated wake-up detection that generates a signal upon sensing IO-Link C/Q wake-up conditions.
• Comprehensive fault management featuring reverse-polarity protection, short-circuit autoretry, and thermal shutdown.
• Internal power regulation providing stable 5V and 3.3V supplies for connected sensor electronics.

Drivers, Receivers, Transceivers Applications

• IO-Link Sensors
• Industrial Sensors and Actuators
• IO-Link Actuators

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'EWA' against official documentation to confirm package type and temperature range. Ensure compatibility with existing PCB land patterns for the WLP-25 footprint. Confirm RoHS compliance status through manufacturer declarations before finalizing procurement specifications.

Drivers, Receivers, Transceivers Selection Notes

Select this component when designing IO-Link devices requiring integrated power regulation and flexible digital I/O configuration. Evaluate the need for COM1, COM2, or COM3 data rates to ensure the HiSlew settings meet timing requirements. Consider the WLP package size constraints relative to the available board space for miniaturized sensor designs.

Drivers, Receivers, Transceivers Part Context

The MAX14821 belongs to the Maxim Integrated IO-Link device transceiver family. It serves as a physical layer interface between microcontrollers running data-link protocols and field-level sensors. The EWA variant specifically denotes the wafer-level package configuration suitable for compact industrial automation modules.

Drivers, Receivers, Transceivers Replacement Considerations

Consult official cross-reference lists for verified substitutes. Generic RS-485 transceivers lack the required IO-Link protocol support and voltage levels.

Drivers, Receivers, Transceivers FAQ

How does the MAX14821 handle C/Q line faults?

The device detects short circuits exceeding 140mA and voltage level errors. Upon detection, it asserts an interrupt and enters an autoretry mode that periodically attempts to restore the driver output.

What are the logic interface voltage levels?

The logic interface supports voltage levels from 2.5V to 5V, defined by the VL supply pin, allowing compatibility with various microcontroller logic standards.

Can the internal regulators be disabled?

Yes, the 3.3V regulator can be disabled via software control. The 5V regulator input can be bypassed by connecting LDOIN to V5 if external regulation is preferred.