ISO7742FDWR

Overview

The ISO7742FDWR is a high-speed, reinforced quad-channel digital isolator manufactured by Texas Instruments. It features capacitive coupling technology with a 5000 Vrms insulation voltage rating and supports data rates up to 100 Mb/s. The device operates within a supply voltage range of 2.25 V to 5.5 V, consuming 13.4 mA of quiescent current. It provides unidirectional signal transmission across four channels (two forward, two reverse) housed in a 16-pin SOIC package. Key electrical parameters include a propagation delay of 10.7 ns, rise/fall times of 3.9 ns, and an operating temperature range from -55°C to +125°C.

Feature Summary

• Provides reinforced isolation for robust EMC performance
• Utilizes capacitive coupling for high-speed digital signal transmission
• Supports general-purpose applications with low pulse width distortion

Applications

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

Procurement Notes

Verify the specific suffix 'FDWR' corresponds to the SOIC-16 package and reel packaging configuration. Confirm that the component meets the required AIA/AIB reinforcement standards for your application's safety regulations. Ensure compatibility with the target PCB footprint and reflow soldering profiles specified in the datasheet.

Selection Notes

Select this component when reinforced isolation ratings are mandatory for safety compliance. Consider the 5000 Vrms insulation capability and 85 kV/µs common-mode transient immunity for noisy environments. Evaluate the 13.4 mA power consumption against system efficiency requirements compared to lower-power alternatives.

Part Context

This part belongs to the ISO7742 family of quad-channel digital isolators. It shares functional similarities with other members like the ISO7742FDBQR but differs in package type and insulation voltage ratings. The FDWR variant specifically targets industrial applications requiring wide-body SOIC packaging and extended temperature ranges.

Replacement Considerations

Direct substitutes include ISO7742FDBQR for SSOP-16 packaging or ISO7742TADWRQ1 for automotive-grade variants. Verify pinout compatibility and insulation voltage ratings before substitution.