ISO7841FDW

Overview

The ISO7841FDW is a quad-channel digital isolator from Texas Instruments, housed in a 16-pin SOIC package. It features capacitive coupling technology with a maximum data rate of 100 Mb/s and an insulation voltage of 5700 Vrms. The device supports bidirectional and unidirectional signaling, operating on a supply voltage range of 2.25 V to 5.5 V. Key electrical parameters include a propagation delay of 11 ns, a typical power consumption of 19 mA, and a common-mode transient immunity of 100 kV/µs. It functions within a temperature range of -55°C to +125°C.

Feature Summary

• Provides reinforced isolation capabilities for high-voltage separation between circuits.
• Supports both unidirectional and bidirectional signal transmission across four channels.
• Utilizes capacitive coupling technology to ensure reliable data integrity.
• Offers wide supply voltage flexibility compatible with various logic levels.

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing high-reliability signal separation
• Power metering applications involving high-voltage interfaces
• Inverter drives and motor control circuits

Procurement Notes

Verify the specific suffix against official datasheets to confirm channel configuration and polarity. Ensure the component meets RoHS standards if required by your assembly process. Check humidity sensitivity classification for proper storage and handling procedures during manufacturing. Confirm the package type matches your PCB footprint requirements before finalizing orders.

Selection Notes

Select this component when high isolation voltage and moderate data rates are required. Compare it with the ISO7840FDW if only unidirectional channels are needed. Consider the ISOW7841 series if magnetic coupling or lower emissions are prioritized over cost. Evaluate power consumption differences against system thermal constraints.

Part Context

This part belongs to the ISO7841 family of high-performance digital isolators. It serves as a general-purpose solution for separating noisy digital signals in industrial environments. The device complements other interface ICs by providing robust protection against ground loops and voltage transients.

Replacement Considerations

The ISO7841FDWR is the tape-and-reel version of this component. Verify pinout compatibility when substituting with similar quad-channel isolators from other manufacturers.