ISO7221MD

Overview

The ISO7221MD is a dual-channel digital isolator from Texas Instruments utilizing capacitive coupling technology. It provides bidirectional data transmission with a maximum data rate of 150 Mbps and an isolation voltage rating of 2500 Vrms. The device operates within a supply voltage range of 3V to 5.5V and supports surface-mount installation in an 8-SOIC package. It features a wide operating temperature range from -40°C to 125°C, ensuring reliable performance in industrial environments.

Feature Summary

• Capacitive coupling architecture for high-speed signal integrity
• Bidirectional channel configuration for flexible data flow
• High common-mode transient immunity for noise rejection

Applications

• Industrial automation control systems
• Medical equipment signal isolation
• Power metering and energy monitoring

Procurement Notes

Verify the specific suffix 'MD' against official Texas Instruments documentation to confirm pinout and thermal specifications. Ensure compatibility with system voltage levels and isolation requirements before integration. Cross-reference ordering information with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when bidirectional communication at speeds up to 150 Mbps is required. It is suitable for applications needing robust isolation between microcontrollers and peripheral devices. Consider the 8-SOIC package constraints and thermal management needs for high-density PCB layouts.

Part Context

This part belongs to the ISO722x family of digital isolators. It shares architectural similarities with other variants like ISO7221AD but offers higher data rates. The family is designed for general-purpose isolation in noisy electrical environments.

Replacement Considerations

ISO7221MDG4 and ISO7221MDR are direct equivalents within the same product line. Verify package dimensions and lead finish if substituting with non-TI manufacturers.