ISO7342CDW

Overview

The ISO7342CDW is a quad-channel reinforced digital isolator from Texas Instruments, housed in a 16-pin SOIC package. It provides galvanic isolation with a maximum insulation voltage of 3000 Vrms and a common-mode transient immunity of 25 kV/µs. The device supports data rates up to 25 Mb/s with a propagation delay of 31 ns. It operates on a supply voltage range of 3 V to 5.5 V, drawing a typical quiescent current of 6.4 mA per channel. The component functions unidirectionally across an industrial temperature range of -40°C to +125°C.

Feature Summary

• Provides robust electromagnetic compatibility through high common-mode transient immunity.
• Offers reinforced galvanic isolation for safety-critical signal transmission.
• Delivers low-power operation suitable for energy-efficient system designs.

Applications

• Industrial automation systems requiring isolated communication interfaces
• Medical equipment needing reinforced electrical isolation
• Power metering applications involving high-voltage sensing

Procurement Notes

Verify the specific suffix 'DW' confirms the tube packaging format rather than reel or cut tape variants. Ensure the order matches the standard commercial grade specifications, distinct from automotive Q1 or wide-temperature F grades. Confirm RoHS compliance status directly with the manufacturer documentation prior to final procurement decisions.

Selection Notes

Select this component when four independent bidirectional channels are required within a single compact footprint. It is appropriate for designs demanding high noise immunity in electrically noisy environments. Consider the 16-pin SOIC package constraints regarding thermal dissipation and board space availability during the layout phase.

Part Context

This part belongs to the ISO7342C family of low-power quad-channel digital isolators. It serves as a direct replacement for legacy optocoupler solutions in modern interface circuits. The device integrates silicon dioxide technology to replace bulky magnetic coupling components.

Replacement Considerations

ISO7342CDWR is available as a reel-packaged alternative with identical electrical characteristics. ISO7342FCDW offers the same functionality with extended temperature rating capabilities. Verify pinout compatibility before substituting these variants in existing PCB layouts.