MAX14878AWA+

Drivers, Receivers, Transceivers Overview

The MAX14878AWA+ is a high-speed isolated CAN transceiver providing 3.5kVRMS galvanic isolation for 60 seconds between the controller side (VDDA) and the CAN bus side (VDDB). It supports data rates up to 1Mbps with a dominant timeout feature. The device operates with a VDDA range of 1.71V to 5.5V and a VDDB range of 4.5V to 5.5V. Typical supply currents are 0.34mA for VDDA at 5V and 4.3mA for VDDB at 5V with an open load. It features ±25V common-mode input range, ±54V fault protection, and ±15kV ESD protection on the bus side. Operating temperature ranges from -40°C to +125°C in an 8-pin wide SOIC package.

Drivers, Receivers, Transceivers Feature Summary

• Integrated galvanic isolation barrier breaks ground loops and reduces noise in environments with large ground potential differences.
• Built-in transmitter dominant timeout prevents erroneous controllers from clamping the bus to a dominant level continuously.
• Wide receiver input common-mode range and fault protection ensure robust communication under harsh electrical conditions.

Drivers, Receivers, Transceivers Applications

• Industrial Controls
• HVAC Systems
• Building Automation
• Switching Gear

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and isolation voltage ratings. Ensure compatibility with system voltage requirements and thermal management needs before procurement. Cross-reference part numbers with authorized distributors to avoid counterfeit components.

Drivers, Receivers, Transceivers Selection Notes

Select this component when 3.5kVRMS isolation is required in an 8-pin footprint without standby mode functionality. Compare with the MAX14878WAWA+ if higher creepage distance or 5kVRMS isolation is needed. Consider the MAX14879 or MAX14880 if low-power standby operation is necessary for the application design.

Drivers, Receivers, Transceivers Part Context

This device belongs to the MAX14878–MAX14880 family of isolated CAN transceivers manufactured by Analog Devices / Maxim Integrated. The family includes variants with different isolation voltages and standby capabilities, all sharing similar high-speed performance characteristics and protection features for industrial network applications.

Drivers, Receivers, Transceivers Replacement Considerations

The MAX14878WAWA+ offers 5kVRMS isolation in the same 8-pin package. The MAX14878AWE+ provides 5kVRMS isolation in a 16-pin package. For standby functionality, consider the MAX14879AWE+ or MAX14880AWE+. Verify pinout and isolation specifications before substitution.

Drivers, Receivers, Transceivers FAQ

Does the MAX14878AWA+ include a standby input?

No, the MAX14878AWA+ does not include a standby input (STB). This feature is available only in the MAX14879 and MAX14880 variants within the same family.

What is the maximum data rate supported by this transceiver?

The MAX14878AWA+ supports high-speed CAN communication with a maximum data rate of 1Mbps.

How does the dominant timeout feature work?

If the TXD input remains low (dominant state) for longer than the specified timeout period (tDOM), the transmitter disables itself and releases the bus to a recessive state to prevent bus locking.