ISOW7840DWE

Overview

The ISOW7840DWE is a quad-channel reinforced digital isolator manufactured by Texas Instruments. It features four independent channels with a 4/0 input-to-output configuration, providing unidirectional signal transmission. The device supports data rates up to 100Mbps and offers a common-mode transient immunity (CMTI) of 100kV/µs. It operates within a supply voltage range of 3V to 5.5V and is rated for an isolation voltage of 5000Vrms. The component utilizes capacitive coupling technology and is housed in a 16-SOIC package with a width of 0.295 inches.

Feature Summary

• Provides reinforced electrical isolation between high-voltage and low-voltage domains using capacitive coupling technology.
• Features four independent unidirectional channels for efficient multi-signal isolation in compact designs.
• Ensures signal integrity in noisy environments with high common-mode transient immunity capabilities.

Applications

• Industrial automation systems requiring robust galvanic isolation
• Medical equipment needing reinforced safety isolation
• Power metering and energy management circuits

Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm pinout and isolation ratings. Ensure compatibility with required operating temperatures and supply voltages. Confirm that the SOIC-16 package dimensions meet your PCB layout constraints. Check for moisture sensitivity levels if storage conditions are not controlled. Validate that the selected variant meets all necessary regulatory standards for your target application.

Selection Notes

Select this component when reinforced isolation is mandated by safety standards rather than functional isolation. Consider the 4/0 channel configuration for applications requiring multiple inputs but no feedback paths. Evaluate the 100Mbps data rate against system timing requirements. Compare power consumption characteristics with other isolators if energy efficiency is critical. Ensure the 5000Vrms rating exceeds the peak working voltage of the isolated circuit.

Part Context

This device belongs to the ISOW7840 family of digital isolators from Texas Instruments. It is part of a series designed for high-performance isolation in industrial and medical applications. The family includes variants with different channel configurations and output polarities. These devices leverage TI's advanced capacitive coupling technology to provide reliable signal transmission across isolation barriers.

Replacement Considerations

ISOW7840FDWER is a verified equivalent part number within the same product family offering identical specifications and functionality.