ISO7841DWWR

Overview

The ISO7841DWWR is a quad-channel digital isolator from Texas Instruments, housed in a 16-pin SOIC package. It features three forward channels and one reverse channel with unidirectional signal flow. The device supports data rates up to 100 Mb/s and offers an insulation voltage of 5700 Vrms. Key electrical parameters include a propagation delay of 11 ns, a maximum rise/fall time of 3.9 ns, and a pulse width distortion of 4.2 ns. It operates on supply voltages between 2.25 V and 5.5 V, drawing typical currents of 9.2 mA and 19 mA for the respective sides. The component functions within a temperature range of -55°C to +125°C.

Feature Summary

• Provides reinforced isolation capabilities for high-voltage safety applications
• Utilizes capacitive coupling technology for signal transmission across isolation barriers
• Features high common-mode transient immunity to maintain signal integrity in noisy environments

Applications

• Reinforced-isolated analog input chains for space-constrained systems
• Industrial automation control systems requiring robust signal isolation
• Medical equipment interfaces demanding high safety isolation ratings

Procurement Notes

Verify the specific suffix 'W' indicates tape-and-reel packaging configuration when ordering. Confirm that the required isolation rating meets the application's reinforced isolation standards. Ensure the SOIC-16 footprint matches the PCB layout design. Check humidity sensitivity handling requirements during storage and assembly processes to prevent moisture-related damage.

Selection Notes

Select this component when a quad-channel isolator with asymmetric channel distribution (3/1) is required. Consider the 100 Mb/s data rate limit for high-speed communication needs. Evaluate the 5700 Vrms insulation voltage against system safety regulations. Compare power consumption figures against other family members if low-power operation is critical.

Part Context

This part belongs to the ISO7841 series of high-performance digital isolators. It shares architectural similarities with the ISO7842 but differs in channel count and directionality. The device complements the ISO783x triple-channel variants by offering an additional forward channel. It is designed for applications needing multiple isolated signals within a compact surface-mount package.

Replacement Considerations

The ISO7841DWR serves as the tube-packaged equivalent of this reel-part. Verify pinout compatibility before substitution. Ensure the replacement part meets the same 5700 Vrms insulation rating and 100 Mb/s speed specifications.