ISO7221ADR

Overview

The ISO7221ADR is a dual-channel digital isolator from Texas Instruments utilizing capacitive coupling technology. It provides 2500Vrms isolation voltage with a data rate of 1Mbps and a common-mode transient immunity of 25kV/µs. The device operates on a 3V to 5.5V supply, features a maximum propagation delay of 475ns, and functions within a temperature range of -40°C to 125°C. It is housed in an 8-SOIC package.

Feature Summary

• Provides galvanic isolation between circuits using high-speed capacitive coupling technology.
• Supports bidirectional signal transmission across two independent channels.
• Ensures signal integrity through high common-mode transient immunity capabilities.

Applications

• Industrial communication interfaces
• Medical equipment signal isolation
• Power management system monitoring

Procurement Notes

Verify the specific suffix 'ADR' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the 8-SOIC footprint matches the target PCB design constraints. Ensure compliance with RoHS3 standards if environmental regulations apply to the final product deployment.

Selection Notes

Select this component when a dual-channel solution with moderate speed requirements is needed. It is suitable for applications where cost-effective isolation is prioritized over higher data rates. Consider the 8-SOIC package size for space-constrained designs requiring standard surface-mount integration.

Part Context

This part belongs to the ISO722x family of general-purpose digital isolators. It shares architectural similarities with other variants like the ISO7221BDR but differs in specified data rates and performance metrics. The series is designed for robust noise rejection in electrically noisy environments.

Replacement Considerations

ISO7221ADRG4 is a verified alternative offering identical electrical specifications and pinout compatibility within the same SOIC-8 package form factor.