ISO7640FMDW

Overview

The ISO7640FMDW is a low-power quad-channel digital isolator from Texas Instruments, housed in a 16-pin SOIC package. It supports data rates up to 150 Mbps with a typical propagation delay of 7 ns. The device operates on supply voltages between 2.7 V and 5 V, drawing typical channel currents of 2 mA at 3.3 V and 25 Mbps. It provides galvanic isolation with ratings up to 6 kVpk for one minute per UL and VDE standards, and is certified up to 5 kVRMS. Operating temperatures range from -40°C to +125°C.

Feature Summary

• Provides high-voltage isolation rated up to 6 kVpk for one minute per UL and VDE standards.
• Features low power consumption with typical channel current of 2 mA at 3.3 V supplies.
• Supports signaling rates up to 150 Mbps with fast propagation delay characteristics.

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing certified insulation barriers
• Power metering applications with high voltage separation needs

Procurement Notes

Verify the specific suffix 'DW' indicates tube packaging rather than reel configuration when ordering. Confirm RoHS compliance status through official manufacturer documentation prior to procurement. Ensure the component meets humidity sensitivity level requirements for your assembly process. Cross-reference the exact part number against the latest datasheet revision to confirm pinout and electrical specifications match your design intent.

Selection Notes

Select this component when quad-channel isolation is required within a single package footprint. Consider the 150 Mbps data rate capability for moderate-speed signal transmission across isolation barriers. Evaluate the 6 kVpk transient withstand voltage for high-noise industrial environments. Compare power consumption metrics against other isolators if battery-operated or thermally constrained designs are involved.

Part Context

This device belongs to the ISO764xFM family of low-power quad-channel digital isolators manufactured by Texas Instruments. It shares architectural similarities with other members like the ISO7641 but offers distinct channel configurations. The FM series is designed for applications demanding robust isolation performance combined with energy efficiency in compact surface-mount packages.

Replacement Considerations

Check for ISO7640FMDWR as an alternative reel-packaged version of the same functional device. Verify compatibility with ISO7641 variants if bidirectional channels are acceptable instead of unidirectional. Ensure substitute parts maintain equivalent isolation ratings and data speed capabilities for direct replacement scenarios.