TD541S-40H3

Overview

The TD541S-40H3 is a digital isolator manufactured by Mornsun America, LLC, designed for SPI applications. It features four channels with a unidirectional configuration and utilizes capacitive coupling technology. The device provides 5000VDC isolation voltage and supports data rates up to 150Mbps. 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 on a supply voltage range of 4.75V to 5.25V and functions within a temperature range of -40°C to 125°C. The component is housed in a 16-BDFN surface-mount package.

Feature Summary

• Integrates four isolated channels with an integrated power supply capability
• Provides high-speed signal transmission at 150Mbps with low propagation delay
• Ensures robust noise immunity through 75kV/µs common-mode transient resistance
• Utilizes compact chip-level DFN packaging for space-constrained designs

Applications

• SPI communication interfaces requiring galvanic isolation
• Industrial automation systems with mixed-signal environments
• Medical equipment needing high-voltage isolation barriers
• Automotive electronic control units for signal integrity

Procurement Notes

Verify the specific suffix codes against official Mornsun documentation to ensure correct pinout and electrical characteristics. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Check for obsolescence notices as product availability may vary. Ensure the selected package variant matches your PCB footprint specifications precisely before ordering.

Selection Notes

Select this component when designing SPI-based systems requiring reliable signal isolation across noisy environments. Consider the 5000VDC isolation rating for safety-critical applications. Evaluate the 150Mbps data rate against system timing requirements. The integrated power feature simplifies design by reducing external component count compared to non-integrated isolators.

Part Context

This part belongs to the TD541S-4xHx series of digital isolators from Mornsun. These devices are engineered for high-reliability applications where signal integrity and electrical safety are paramount. The series leverages capacitive coupling technology to achieve isolation without magnetic components, offering consistent performance across varying temperatures and operating conditions.

Replacement Considerations

TD541S-40L3

FAQ

What is the maximum data rate supported by the TD541S-40H3?

The TD541S-40H3 supports a maximum data rate of 150Mbps.

Does the TD541S-40H3 include an integrated power supply?

Yes, the TD541S-40H3 includes an integrated power supply capability.