ISO7340CDW

Overview

The ISO7340CDW is a quad-channel digital isolator from Texas Instruments, housed in a 16-pin SOIC package. It provides galvanic isolation via capacitive coupling with an insulation voltage of 3000 Vrms. The device supports a data rate of 25 Mb/s and operates on a supply voltage range of 3 V to 5.5 V. Typical power consumption is 9.3 mA per channel, with a propagation delay of 31 ns. It functions within a temperature range of -40°C to +125°C.

Feature Summary

• Provides robust galvanic isolation between circuits using capacitive coupling technology.
• Integrates noise filters on inputs to enhance signal integrity in noisy environments.
• Offers configurable default output states for high or low logic levels.

Applications

• Industrial automation systems requiring isolated communication interfaces
• Automotive electronic control units (ECUs) needing reliable signal transmission
• Medical equipment demanding high-voltage isolation safety standards

Procurement Notes

Verify the specific suffix against official datasheets to confirm pinout and electrical characteristics. Ensure the component meets required automotive or industrial qualification standards if applicable. Confirm packaging type matches production needs. Cross-reference manufacturer part numbers to avoid counterfeit risks during sourcing.

Selection Notes

Select this component when four independent isolated channels are required in a compact surface-mount package. Consider its low power consumption and high-speed data rate for energy-efficient designs. Evaluate thermal performance within the specified operating temperature range. Compare isolation voltage ratings against system safety requirements before integration.

Part Context

This device belongs to the ISO7340 family of digital isolators designed for high-reliability applications. It serves as a key interface solution for separating ground domains in mixed-signal systems. The series emphasizes low power consumption while maintaining high data throughput capabilities across multiple channels simultaneously.

Replacement Considerations

ISO7340FCQDWRQ1: Automotive-grade variant with similar specifications but different qualification status.

FAQ

What is the maximum insulation voltage rating?

The device supports an insulation voltage of 3000 Vrms.

Does the device include input noise filtering?

Yes, it features integrated noise filters on all input channels.