ISO7331CQDWRQ1

Overview

The ISO7331CQDWRQ1 is an automotive-grade, low-power, triple-channel digital isolator from Texas Instruments. It features a 2/1 channel configuration with unidirectional signal transmission. The device supports data rates up to 25 Mb/s and offers a common-mode transient immunity of 25 kV/µs. It operates within a supply voltage range of 3 V to 5.5 V and maintains a typical operating supply current of 7 mA per channel. The isolation rating is 3000 Vrms, and it functions reliably across a temperature range of -40°C to +125°C. Packaged in a 16-pin SOIC (DW) format.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability in vehicle applications.
• Low-power consumption design suitable for energy-efficient systems.
• High common-mode transient immunity ensures robust signal integrity in noisy environments.

Applications

• Automotive gateway systems
• Inverter control circuits
• Motor drive interfaces

Procurement Notes

Verify the specific suffix 'R' indicates tape-and-reel packaging when ordering. Confirm the 'Q1' designation aligns with required automotive quality standards. Ensure the 16-SOIC package dimensions match the PCB footprint constraints. Check for RoHS compliance status if environmental regulations apply to the final assembly.

Selection Notes

Select this component for applications requiring three isolated channels with a 2-input to 1-output directionality. It is appropriate where low power consumption and high-speed data transmission are critical. Consider the 3000 Vrms isolation barrier for safety requirements. Evaluate the 25 kV/µs CMTI for compatibility with high-dv/dt switching environments.

Part Context

This part belongs to the ISO733x-Q1 family of automotive digital isolators. It utilizes capacitive coupling technology to provide electrical isolation between circuit sections. The series is designed to replace bulky magnetic couplers in modern electronic architectures.

Replacement Considerations

Direct substitutes include other members of the ISO733x-Q1 family, such as the ISO7330CQDWRQ1 or ISO7332CQDWRQ1, depending on channel count and directionality requirements. Verify pinout compatibility before substitution.