MAX14821ETG+

Drivers, Receivers, Transceivers Overview

The MAX14821ETG+ is an IO-Link device transceiver designed for 24V binary sensors and actuators. 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 independently configurable C/Q and DO drivers supporting push-pull, PNP, or NPN configurations with 100mA drive capability. The component is housed in a 4mm x 4mm, 24-pin TQFN package and operates within a temperature range of -40°C to +85°C.

Drivers, Receivers, Transceivers Feature Summary

• Configurable driver outputs support push-pull, high-side (PNP), or low-side (NPN) switching modes for flexible sensor integration.
• Integrated protection mechanisms include reverse-polarity protection, short-circuit detection with autoretry, and thermal shutdown.
• Built-in wake-up detection identifies IO-Link C/Q conditions and generates active-low WU signals for master communication.

Drivers, Receivers, Transceivers Applications

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

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix ETG+ against official manufacturer documentation to confirm the exact package type and RoHS compliance status. Ensure that the ordering information matches the required pin configuration and thermal characteristics for your design implementation.

Drivers, Receivers, Transceivers Selection Notes

Select this component when designing IO-Link devices requiring integrated power regulation and robust fault protection. Consider the TQFN package dimensions and thermal resistance values if space constraints or heat dissipation are critical factors in the system layout.

Drivers, Receivers, Transceivers Part Context

This part belongs to the Maxim Integrated MAX14821 series of IO-Link transceivers. It serves as a physical layer interface between microcontrollers running data-link protocols and 24V field devices, consolidating signal conditioning and power management functions into a single compact solution.

Drivers, Receivers, Transceivers Replacement Considerations

Consult official Analog Devices documentation for verified substitute part numbers. Do not assume functional equivalence with other models without reviewing specific electrical parameter differences.

Drivers, Receivers, Transceivers FAQ

How does the MAX14821 handle C/Q short-circuit faults?

The device detects short circuits lasting longer than 140µs and enters an autoretry mode. It periodically checks for the fault condition every 26ms and attempts to correct the output during 240µs intervals.

What logic levels does the VL pin define?

The VL pin defines the logic levels for all logic inputs and outputs. It accepts a voltage range of 2.3V to 5.5V and determines the threshold voltages for SPI and control signals.

Can the internal 5V regulator be disabled?

Yes, the internal 5V LDO can be disabled by connecting the LDOIN pin directly to the V5 pin. In this configuration, an external voltage between 4.75V and 5.25V must be applied to V5.