ISOW7843FDWE

Overview

The ISOW7843FDWE is a quad-channel reinforced digital isolator from Texas Instruments featuring an integrated high-efficiency DC-DC power converter. It provides four isolated channels with a 1/3 input-to-output configuration and supports unidirectional data transmission at speeds up to 100 Mbps. The device offers a 5000 Vrms isolation voltage and a common-mode transient immunity of 100 kV/µs. Operating on a single supply voltage range of 3 V to 5.5 V, it functions within a temperature range of -40°C to +125°C. The component is housed in a 16-pin SOIC package.

Feature Summary

• Integrates a high-efficiency DC-DC power converter for isolated side power generation
• Provides reinforced insulation with 5000 Vrms isolation rating
• Delivers high common-mode transient immunity of 100 kV/µs
• Supports data rates up to 100 Mbps with low propagation delay

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reinforced safety isolation
• Power metering and energy management circuits
• Inverter control and motor drive interfaces

Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm packaging type and reel specifications. Ensure compatibility with RoHS3 standards and check moisture sensitivity levels before assembly. Confirm that the ordered part matches the exact pinout and electrical characteristics defined in the current datasheet revision.

Selection Notes

Select this component when a quad-channel solution with integrated isolated power is required. It is suitable for applications demanding high reliability and robust noise immunity. Consider the 16-SOIC package constraints and thermal performance limits during PCB layout design to ensure optimal operation within the specified temperature range.

Part Context

This part belongs to the ISOW784x family of high-performance digital isolators. The family includes variants such as the ISOW7842 and ISOW7843, which differ primarily in channel configuration and directionality. These devices are designed to replace traditional optocouplers in modern industrial and medical applications, offering superior speed and integration.

Replacement Considerations

Direct replacements include other members of the ISOW784x family, such as the ISOW7842FDWE, provided the channel configuration matches the application requirements. Verify that any substitute maintains the same reinforced isolation rating and integrated power converter functionality.