ISO7340CDWR

Overview

The ISO7340CDWR is a quad-channel reinforced digital isolator from Texas Instruments, designed for robust electromagnetic compatibility and low power consumption. It operates with a data rate of 25 Mb/s and provides galvanic isolation via capacitive coupling. The device supports a supply voltage range of 3 V to 5.5 V and features an operating temperature range from -40°C to +125°C. Key electrical parameters include a typical propagation delay of 31 ns, a maximum pulse width distortion of 4 ns, and a typical supply current of 6.4 mA. It utilizes a 16-pin SOIC package.

Feature Summary

• Provides four independent channels for bidirectional or unidirectional signal transmission with integrated noise filtering on inputs.
• Offers reinforced galvanic isolation using capacitive coupling technology to ensure signal integrity in noisy environments.
• Features default output high and low options to simplify system design and reduce component count.
• Delivers low power consumption suitable for battery-operated and energy-efficient applications.

Applications

• Industrial automation systems requiring isolated communication interfaces
• Medical equipment needing reinforced isolation for patient safety
• Power metering and smart grid infrastructure
• Automotive electronic control units

Procurement Notes

Verify the specific suffix 'CDWR' corresponds to the 16-pin SOIC package and tape-and-reel packaging configuration. Confirm that the device meets the required insulation ratings for your application's safety standards. Ensure compatibility with the target supply voltage range of 3 V to 5.5 V. Check for moisture sensitivity level requirements during storage and handling. Validate that the 25 Mbps data rate aligns with system timing constraints.

Selection Notes

Select this component when four isolated channels are needed within a single package to save board space. Consider the ISO7340CDWR for applications demanding high EMC immunity due to its integrated input noise filters. Evaluate the 31 ns propagation delay against system latency requirements. Compare power consumption metrics if battery life is a critical constraint. Ensure the SOIC-16 footprint matches the PCB layout design.

Part Context

This part belongs to the ISO7340C family of quad-channel reinforced digital isolators. It complements other Texas Instruments interface ICs by providing reliable signal transmission across isolation barriers. The series is designed to replace traditional optocouplers in many industrial and automotive applications, offering higher speed and lower power consumption.

Replacement Considerations

Check for direct pin-compatible replacements within the ISO7340 family, such as variants with different packaging or temperature ranges. Verify that any substitute maintains the same 25 Mbps data rate and 3000 Vrms isolation voltage. Ensure the replacement offers equivalent propagation delay and power characteristics.