TD541S-42H3

Overview

The TD541S-42H3 is a digital isolator manufactured by Mornsun America, LLC, designed for SPI applications. It features four channels with a unidirectional configuration of three inputs on side 1 and one output on side 2. The device provides 5000VDC isolation voltage and supports data rates up to 150Mbps. It utilizes capacitive coupling technology and includes an integrated isolated power supply. Key electrical parameters include a minimum common-mode transient immunity (CMTI) of 75kV/µs, maximum propagation delay of 13ns, and typical rise/fall times of 2.5ns. It operates within a temperature range of -40°C to 125°C and is housed in a 16-BDFN package.

Feature Summary

• Integrates isolated power supply with signal transmission capabilities
• Provides high common-mode transient immunity for noise-sensitive environments
• Supports high-speed SPI communication protocols
• Utilizes capacitive coupling for reliable digital isolation

Applications

• SPI interface isolation in industrial automation systems
• Signal isolation in distributed control networks
• Isolation barriers in medical instrumentation
• Data acquisition systems requiring galvanic isolation

Procurement Notes

Verify the specific channel configuration (3-input/1-output) against system requirements, as this variant differs from other TD541S models. Confirm package compatibility with PCB footprint specifications. Check current product status, as availability may vary. Ensure supply chain sources provide authentic components with proper documentation.

Selection Notes

Select this component when a single-channel output is required alongside multiple input signals in an SPI architecture. Compare CMTI ratings against system noise levels. Evaluate thermal performance within the specified operating temperature range. Consider the integrated power supply feature to simplify external circuit design compared to non-integrated isolators.

Part Context

This part belongs to the TD541S-4xHx series of digital isolators from Mornsun. It shares the same core isolation technology and packaging as other variants in the family but differs in channel directionality and count. The 'H' suffix typically denotes specific voltage or performance characteristics within the series lineup.

Replacement Considerations

TD541S-42L3 is listed as a parameter equivalent substitute by the manufacturer.