ISO7241ADWR

Overview

The ISO7241ADWR is a quad digital isolator from Texas Instruments utilizing capacitive coupling technology. It features four forward channels and one reverse channel, supporting unidirectional signal transmission at data rates up to 1 Mbps. The device operates within a supply voltage range of 3.15 V to 5.5 V and provides an isolation voltage of 2500 Vrms. Packaged in a 16-pin SOIC (DW) surface-mount format, it exhibits a typical propagation delay of 110 ns. This component is currently classified as obsolete by the manufacturer.

Feature Summary

• Capacitive coupling architecture for high reliability and low electromagnetic interference
• Asymmetric channel configuration with three forward and one reverse path
• Unidirectional signal isolation capability

Applications

• Industrial communication bus isolation
• Medical equipment signal isolation
• Power metering systems

Procurement Notes

Verify current availability status as this part is listed as obsolete. Confirm functional equivalence with recommended substitutes such as the ISO6741DWR before procurement. Ensure design-in compatibility regarding pinout and electrical specifications matches the replacement component requirements.

Selection Notes

Select this component for applications requiring robust capacitive isolation with asymmetric channel counts. Consider the 1 Mbps speed limit and 110 ns propagation delay when designing timing-critical interfaces. Evaluate thermal performance within the specified operating temperature range for the SOIC-16 package.

Part Context

This device belongs to the ISO7241A series of digital isolators. It shares the same physical footprint and basic functionality with other variants like the ISO7241MDWR but differs in speed specifications. The family utilizes Texas Instruments' proprietary capacitive isolation technology for galvanic separation.

Replacement Considerations

Texas Instruments recommends the ISO6741DWR as a direct substitute. Verify that the higher speed capabilities of the replacement do not introduce signal integrity issues in existing designs.

FAQ

What is the isolation voltage rating?

The device supports an isolation voltage of 2500 Vrms.

Is the channel configuration symmetric?

No, it features an asymmetric layout with three forward channels and one reverse channel.