ISO7840DWWR

Overview

The ISO7840DWWR is a quad-channel digital isolator from Texas Instruments featuring capacitive coupling technology. It provides 5700 Vrms reinforced isolation and supports data rates up to 100 Mb/s with a common-mode transient immunity of 100 kV/µs. The device operates on a single supply voltage ranging from 2.25 V to 5.5 V, drawing a typical operating current of 23.8 mA. It utilizes a 16-pin SOIC package (0.551 inch width) and functions within an extended temperature range of -55°C to +125°C. Key timing parameters include a maximum propagation delay of 11 ns and pulse width distortion of 0.55 ns.

Feature Summary

• Provides high-speed signal transmission with a signaling rate of up to 100 Mbps.
• Offers reinforced insulation capability rated at 5700 Vrms for safety-critical applications.
• Ensures signal integrity in noisy environments through 100 kV/µs common-mode transient immunity.
• Supports flexible power integration with a wide supply voltage range of 2.25 V to 5.5 V.

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reinforced electrical isolation
• Power metering circuits for energy monitoring
• Inverter drives and motor control units

Procurement Notes

Verify the specific suffix 'W' confirms the tape-and-reel packaging format when ordering. Ensure the design accounts for the 16-SOIC footprint dimensions and thermal requirements. Confirm that the 5700 Vrms rating meets the specific safety standards required by the target application region. Check for moisture sensitivity level handling procedures during assembly.

Selection Notes

Select this component when four independent unidirectional channels are required within a single package. It is suitable for designs needing high common-mode noise rejection without magnetic interference susceptibility. Consider the 16-SOIC package for surface-mount assembly compatibility. Evaluate the 2.25 V to 5.5 V supply range against system power constraints.

Part Context

This part belongs to the ISO7840 family of quad-channel digital isolators manufactured by Texas Instruments. It utilizes capacitive coupling technology, distinguishing it from magnetic or optical isolation methods. The device is designed to replace traditional optocouplers in high-speed, high-reliability applications where size and performance are critical factors.

Replacement Considerations

The ISO7840DWR is the equivalent tube-packaged version of this component. Designers may substitute based on preferred packaging method while maintaining identical electrical characteristics and pinout configuration.