ISOW7840DWER

Overview

The ISOW7840DWER is a high-performance, reinforced quad-channel digital isolator manufactured by Texas Instruments. It features four forward channels and zero reverse channels with unidirectional signal transmission. The device utilizes capacitive coupling technology to provide an insulation voltage of 5000 Vrms. It supports data rates up to 100 Mbps with a maximum propagation delay of 17.6 ns and typical rise/fall times of 4 ns. Operating on a supply voltage range of 3 V to 5.5 V, it exhibits a common-mode transient immunity of 100 kV/µs. The component is housed in a 16-SOIC package and operates within a temperature range of -40°C to 125°C.

Feature Summary

• Provides reinforced isolation for safety-critical applications using capacitive coupling technology.
• Delivers high common-mode transient immunity to maintain signal integrity in noisy environments.
• Supports high-speed data transmission with low propagation delay and pulse width distortion.

Applications

• Industrial automation systems requiring galvanic isolation between microcontrollers and peripherals.
• Medical equipment needing reinforced isolation for patient safety compliance.
• Power electronics interfaces for monitoring and control in inverters and motor drives.

Procurement Notes

Verify the specific suffix 'DWER' corresponds to the 16-SOIC package and tape-and-reel packaging configuration. Confirm that the required isolation rating meets the application's reinforced isolation standards. Check moisture sensitivity level (MSL 3) requirements for storage and handling procedures. Ensure the operating temperature range aligns with the environmental conditions of the final assembly.

Selection Notes

Select this component when reinforced isolation is mandated by safety standards rather than basic isolation. Choose the ISOW7840DWER over the ISO7840 series if higher reliability and stricter isolation specifications are required. Consider the 100 kV/µs CMTI rating for applications with significant electrical noise. Evaluate the 16-SOIC footprint against available PCB space constraints.

Part Context

This part belongs to the ISOW7840 family of digital isolators from Texas Instruments. It is distinct from the ISO7840 series, which offers basic isolation ratings. The ISOW7840 series is designed for applications requiring certified reinforced isolation, such as medical devices and industrial safety systems. It shares the same pinout and functional architecture as other members of the family but differs in isolation certification levels.

Replacement Considerations

The ISO7840DWR is a related component offering basic isolation instead of reinforced isolation. Verify if the application strictly requires reinforced isolation before substituting. Other family members like the ISOW7842 offer bidirectional channels, which may not be compatible if unidirectional operation is fixed.