ISO7740FDWR

Overview

The ISO7740FDWR is a high-speed, reinforced quad-channel digital isolator manufactured by Texas Instruments. It features four forward channels and zero reverse channels with unidirectional signal flow. The device operates on a single supply voltage ranging from 2.25 V to 5.5 V. Key electrical parameters include a data rate of 100 Mb/s, an insulation voltage of 5000 Vrms, and a common-mode transient immunity of 85 kV/µs. Typical propagation delay is 10.7 ns, with rise and fall times of 3.9 ns. It functions within a temperature range of -55°C to +125°C and is housed in a 16-pin SOIC package.

Feature Summary

• Provides reinforced isolation for robust EMC performance in noisy environments
• Integrates four independent unidirectional channels for compact system design
• Utilizes capacitive coupling technology for galvanic isolation

Applications

• Industrial automation control systems
• Medical equipment requiring reinforced isolation
• Power metering and energy management systems

Procurement Notes

Verify the specific suffix FDWR against the official datasheet to confirm the SOIC-16 package and tape-and-reel packaging format. Ensure the component meets the required reinforcement isolation standards for your application safety regulations. Confirm availability status as manufacturing lifecycles may change. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when reinforced isolation certification is mandatory for safety compliance. It is suitable for applications requiring high common-mode transient immunity up to 85 kV/µs. Consider the 100 Mb/s data rate limit for signal integrity requirements. Evaluate the 2.25 V to 5.5 V supply range compatibility with existing logic levels. The wide operating temperature range supports harsh industrial environments.

Part Context

This device belongs to the ISO7740 family of digital isolators from Texas Instruments. It shares architectural similarities with other members like the ISO7740FDW but differs in packaging and reel configuration. The family is designed for general-purpose isolation where robustness and speed are critical. It complements lower-channel variants such as the ISO7740D for simpler interface needs.

Replacement Considerations

ISO7740FDW serves as a non-reel alternative with identical electrical specifications. ISO7740QDBQRQ1 offers automotive qualification but with different insulation ratings. Verify pinout compatibility and package dimensions before substitution.