ISO7421EQDWRQ1

Overview

The ISO7421EQDWRQ1 is an automotive-grade, low-power dual-channel digital isolator from Texas Instruments. It features a unidirectional signal path with one forward and one reverse channel. The device operates on a supply voltage range of 3 V to 5.5 V and delivers a data rate of 50 Mbps. Key electrical specifications include a propagation delay of 9 ns, a typical operating supply current of 2 mA, and a maximum power dissipation of 72.7 mW. It provides 2500 Vrms isolation via capacitive coupling and supports a common-mode transient immunity of 25 kV/µs. The component is housed in a standard SOIC-8 package.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for robust reliability in vehicle environments
• Low-power architecture designed to minimize energy consumption during continuous operation
• High-speed bidirectional communication capability supporting data rates up to 50 Mbps
• Integrated capacitive coupling technology ensuring galvanic isolation between circuit domains

Applications

• Automotive gateway systems requiring isolated data transmission
• Inverter control circuits within electric vehicle powertrains
• On-board charger (OBC) interfaces for battery management
• Telematics units needing secure signal separation

Procurement Notes

Verify the specific revision code and tape-and-reel packaging configuration when ordering. Confirm that the selected variant meets the required automotive quality standards for your specific application environment. Ensure compatibility with your system's voltage levels and isolation requirements before finalizing procurement decisions.

Selection Notes

Select this component for applications demanding automotive-grade reliability combined with low power consumption. It is suitable for designs requiring moderate data rates and basic to enhanced isolation ratings. Consider alternative models if higher data throughput or different pin configurations are necessary for your specific interface needs.

Part Context

This device belongs to the ISO7421 family of digital isolators manufactured by Texas Instruments. It is part of a broader portfolio of interface ICs designed for industrial and automotive markets. The family emphasizes low power consumption and high reliability, addressing the growing need for efficient signal isolation in modern electronic systems.

Replacement Considerations

Direct replacements may include other automotive-qualified dual-channel isolators from the same manufacturer. Verify pinout compatibility and electrical specifications such as isolation voltage and data rate when substituting components to ensure system integrity.