STISO621WTR

Overview

The STISO621WTR is a dual-channel digital isolator from STMicroelectronics, utilizing thick oxide galvanic isolation technology. It supports data rates up to 100 Mbps and offers high common-mode transient immunity of 50 kV/µs. The device operates within a wide temperature range of -40°C to 125°C and is available in an 8-SOIC package. Key electrical specifications include an insulation voltage of 5000 Vpk or 6000 Vrms, depending on the specific variant documentation, ensuring robust signal transmission across isolated domains.

Feature Summary

• Dual-channel architecture with independent signal paths
• High-speed data transmission capability up to 100 Mbps
• Robust common-mode transient immunity for noise rejection
• Wide operating temperature range for industrial environments

Applications

• Industrial communication interfaces
• Power monitoring systems
• Medical equipment signal isolation
• Automotive electronic control units

Procurement Notes

Verify the specific insulation voltage rating (5kV or 6kV) against the official datasheet revision, as sources vary between 5000 Vpk and 6000 Vrms. Confirm the package type is 8-SOIC and check for RoHS compliance status. Ensure the ordering suffix matches the required tape-and-reel configuration for automated assembly processes.

Selection Notes

Select this component when high-speed digital isolation is required in compact spaces. The 8-SOIC package provides a balance between pin count and board area efficiency. Consider the 50 kV/µs CMTI specification for applications with significant switching noise. Verify that the supply voltage range of 3V to 5.5V aligns with the system logic levels.

Part Context

This part belongs to the STISO621 series of digital isolators. The series is characterized by its use of ST's proprietary thick oxide technology, which replaces traditional transformer-based isolation. This family is designed for general-purpose applications requiring reliable galvanic separation between circuit sections.

Replacement Considerations

Check for direct pin-compatible alternatives within the same STISO family. Verify that any substitute maintains the 100 Mbps data rate and similar CMTI specifications. Ensure the replacement package matches the 8-SOIC footprint to avoid PCB redesign.