ISO7730FDWR

Overview

The ISO7730FDWR is a general-purpose digital isolator from Texas Instruments featuring three forward channels and zero reverse channels. It utilizes capacitive coupling technology to provide robust isolation with a maximum insulation voltage of 5000 Vrms. The device supports data rates up to 100 Mb/s and operates within a supply voltage range of 2.25 V to 5.5 V. Key electrical parameters include a typical propagation delay of 11 ns, a maximum power dissipation of 150 mW, and a common-mode transient immunity of 85 kV/µs. It functions reliably across an extended temperature range from -55°C to +125°C.

Feature Summary

• Provides high-speed signal transmission via capacitive coupling technology for reliable data integrity.
• Features a robust isolation barrier designed for long-term operational stability under varying voltage conditions.
• Offers enhanced noise immunity against fast-changing voltage transients in electrically noisy environments.

Applications

• Industrial automation systems requiring galvanic isolation between control logic and sensors
• Medical equipment needing reinforced isolation for patient safety compliance
• Power metering applications involving isolated analog front-end interfaces

Procurement Notes

Verify the specific suffix 'FDWR' corresponds to the SOIC-16 package and tape-and-reel orientation before ordering. Confirm that the required insulation rating of 5000 Vrms meets the system's safety standards. Ensure the operating temperature range of -55°C to +125°C aligns with the environmental conditions of the final assembly. Check for any recent product change notifications regarding manufacturing sites or materials.

Selection Notes

Select this component when a unidirectional three-channel isolator is required with high common-mode transient immunity. It is suitable for designs needing a wide supply voltage range and low propagation delay skew. Consider the SOIC-16 footprint constraints and thermal dissipation capabilities during layout planning. Compare against other ISO773x variants if bidirectional communication or different channel counts are needed.

Part Context

This part belongs to the ISO773x family of triple-channel digital isolators manufactured by Texas Instruments. These devices are engineered to replace traditional magnetic couplers in modern electronic designs. The family emphasizes compact size, low power consumption, and high reliability for industrial and commercial applications requiring strict isolation barriers.

FAQ

What is the common-mode transient immunity (CMTI) specification?

The ISO7730FDWR specifies a common-mode transient immunity of 85 kV/µs, ensuring reliable operation in high-noise environments.

Does this device support bidirectional communication?

No, the ISO7730FDWR is configured with three forward channels and zero reverse channels, making it strictly unidirectional.