ISO7230CDWR

Overview

The ISO7230CDWR is a triple-channel digital isolator from Texas Instruments, designed for high-speed data transmission with a maximum data rate of 25 Mbps. It features unidirectional signal isolation using capacitive coupling technology and offers an insulation voltage rating of 2500 Vrms. The device operates within a supply voltage range of 3.15 V to 5.5 V, drawing a typical operating current of 17 mA. It exhibits a propagation delay of 56 ns and maintains functionality across an extended temperature range from -40°C to +125°C. Packaged in a 16-pin SOIC (Wide) surface-mount format, it supports robust noise immunity with a common-mode transient rejection capability.

Feature Summary

• Provides galvanic isolation between circuits using capacitive coupling technology
• Supports high-speed data communication at rates up to 25 Mbps
• Ensures reliable operation across industrial temperature extremes
• Delivers strong common-mode transient immunity for noisy environments

Applications

• Industrial automation systems requiring isolated sensor interfaces
• Medical equipment needing patient isolation barriers
• Power electronics control circuits with ground potential differences
• Repeater and bridge applications in communication networks

Procurement Notes

Verify the specific suffix 'WR' indicates reel packaging when ordering. Confirm that the CDWR variant corresponds to the 25 Mbps speed grade rather than higher-speed models. Ensure compatibility with 3.3 V or 5 V logic levels. Check for moisture sensitivity level requirements during storage and handling. Validate that the SOIC-16 package dimensions fit the target PCB footprint.

Selection Notes

Choose this component when unidirectional isolation is sufficient for the application design. Select this part over bidirectional options if channel count efficiency is prioritized for single-direction data flow. Consider the 25 Mbps speed limit against system timing requirements. Evaluate the 17 mA power consumption against battery-operated constraints. Verify that the 2500 Vrms isolation rating meets safety standards for the intended electrical environment.

Part Context

This device belongs to the ISO7230M family of high-speed digital isolators manufactured by Texas Instruments. It shares the same SOIC-16 package and basic isolation architecture as other variants in the series but differs in data rate specifications. The family is designed to replace traditional transformer and optocoupler solutions in modern interface designs.

Replacement Considerations

The ISO7230DW serves as a direct pin-compatible alternative offering higher speed performance. Designers may also consider the ISO7231C for bidirectional isolation needs. Verify that substitute parts maintain compatible supply voltage ranges and thermal characteristics.