ISO150AU/1K

Overview

The ISO150AU/1K is a dual, isolated, bidirectional digital coupler manufactured by Texas Instruments. It provides galvanic isolation between two sides of a circuit with a rated isolation voltage of 1500Vrms. The device supports data rates up to 80MBd and features a typical common-mode transient immunity (CMTI) of 1.6kV/µs. It is housed in a 28-SOIC package with a width of 7.50mm (0.295 inches). This component is designed for applications requiring robust signal transmission across isolation barriers while maintaining high noise immunity.

Feature Summary

• Dual-channel bidirectional digital coupling for signal isolation
• High common-mode transient immunity for noise rejection
• Galvanic isolation capability up to 1500Vrms

Applications

• Industrial automation systems requiring isolated communication
• Medical equipment needing patient isolation barriers
• Power electronics control circuits with high-voltage separation

Procurement Notes

Verify the exact part number suffix '/1K' corresponds to the specific tape-and-reel packaging configuration as defined by Texas Instruments documentation. Confirm that the 28-SOIC package dimensions match your PCB footprint requirements. Ensure compatibility with the required isolation voltage ratings for your specific application safety standards before procurement.

Selection Notes

Select this component when dual-channel bidirectional isolation is required within a single package. Consider the 80MBd data rate limit for high-speed digital signals. Evaluate the 1.6kV/µs CMTI specification against the noise environment of the target system. Verify that the 28-SOIC package size fits the available board space constraints.

Part Context

The ISO150AU/1K belongs to Texas Instruments' family of digital isolators, which replace traditional optocouplers in many applications. These devices offer improved performance in terms of speed, power consumption, and reliability. The 'AU' designation typically indicates an automotive-grade or enhanced reliability variant within the broader ISO150 series lineup.

Replacement Considerations

Check for direct pin-to-pin replacements within the ISO150 series or other TI digital isolator families. Verify that any substitute maintains the same 1500Vrms isolation rating and 28-SOIC package form factor. Ensure the alternative component meets the 80MBd data rate and CMTI specifications.