ISO7340CQDWRQ1

Overview

The ISO7340CQDWRQ1 is an automotive-grade digital isolator featuring four unidirectional channels with a 4/0 input-output configuration. It utilizes capacitive coupling technology to provide electrical isolation with a rated insulation voltage of 3000 Vrms. The device supports data rates up to 25 Mb/s and exhibits a typical propagation delay of 31 ns. It operates within a supply voltage range of 3 V to 5.5 V, drawing a maximum operating supply current of 9.3 mA. The component is housed in a 16-pin SOIC (DW) package and is qualified for AEC-Q100 standards, ensuring reliability across an extended operating temperature range from -40°C to +125°C.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for Grade 1 temperature ratings
• High common-mode transient immunity capability via capacitive coupling isolation architecture
• Low-power operation suitable for energy-efficient automotive electronic systems

Applications

• Automotive gateway systems requiring robust signal isolation between domains
• In-vehicle network interfaces utilizing CAN or LIN protocols
• Battery management system (BMS) communication channels
• Infotainment system isolation barriers

Procurement Notes

Verify the complete part number including the suffix 'Q1' to confirm automotive grade status. Ensure the package designation 'DW' matches the required 16-pin SOIC footprint. Confirm that the 4/0 channel configuration aligns with the specific circuit design requirements before procurement.

Selection Notes

Select this component when four isolated unidirectional channels are required for automotive applications. It is appropriate for designs needing high CMTI and low power consumption. Consider alternative channel counts if more or fewer isolation paths are needed. Verify voltage levels match the 3V to 5.5V supply constraint.

Part Context

This device belongs to the ISO7340-Q1 family of digital isolators from Texas Instruments. It shares the same core isolation technology as other members but offers a specific quad-channel configuration. The family is designed to replace bulky magnetic couplers in modern automotive electronics while maintaining safety compliance.

Replacement Considerations

Direct replacements include other ISO7340 variants with different packaging options such as ISO7340CDWRQ1. Cross-reference channel configurations carefully, as other models may offer bidirectional or different channel counts.