ISO7320FCD

Overview

The ISO7320FCD is a low-power, dual-channel digital isolator from Texas Instruments featuring capacitive coupling technology. It provides galvanic isolation up to 3000 Vrms for one minute per UL standards and 4242 Vpk. The device supports data rates of 25 Mbps with a typical propagation delay of 32 ns and a common-mode transient immunity of 25 kV/µs. Operating on a single supply voltage between 3 V and 5.5 V, it draws a maximum quiescent current of 4.9 mA per channel. Packaged in an 8-SOIC (0.154 inch width) surface-mount housing, it functions as a unidirectional 2/0 channel isolator suitable for industrial applications.

Feature Summary

• Provides robust electromagnetic compatibility performance with high common-mode transient immunity
• Offers low power consumption suitable for battery-operated or energy-efficient systems
• Delivers reliable galvanic isolation using advanced capacitive coupling technology

Applications

• Industrial automation and process control systems
• Medical equipment requiring electrical safety isolation
• Power metering and smart grid infrastructure

Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm package type and tape/reel specifications. Ensure compliance with RoHS directives and moisture sensitivity levels required by your assembly process. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components. Confirm that the selected variant matches your board layout constraints regarding the SOIC-8 footprint dimensions.

Selection Notes

Select this component when bidirectional communication is not required, as it features a 2/0 channel configuration. Consider the 3000 Vrms isolation rating for safety-critical interfaces. Evaluate the 25 Mbps data rate against system timing requirements. The wide operating temperature range supports harsh environmental conditions. Verify power supply voltage compatibility within the 3 V to 5.5 V range before integration.

Part Context

This device belongs to the ISO732x family of low-power digital isolators designed for general-purpose applications. It complements other variants like the ISO7321 which offers bidirectional channels. The series emphasizes robust EMC performance and low power dissipation. It serves as a replacement for traditional optocouplers in modern interface designs requiring higher speed and reliability.

Replacement Considerations

Check for ISO7320FCDR if reel packaging is preferred over tubes. Verify functional equivalents such as ISO7320C variants if different insulation ratings are acceptable.