ISO7740FDBQR

Overview

The ISO7740FDBQR is a reinforced quad-channel digital isolator from Texas Instruments, utilizing capacitive coupling technology. It operates within a supply voltage range of 2.25 V to 5.5 V and supports data rates up to 100 Mb/s. The device features four unidirectional channels with a propagation delay of 10.7 ns and rise/fall times of 3.9 ns. It provides an insulation voltage of 5000 Vrms and functions across a temperature range of -55°C to +125°C. Packaged in an SSOP-16 format, it consumes 22.7 mA of operating current.

Feature Summary

• Reinforced isolation architecture for robust EMC performance
• Quad-channel unidirectional signal transmission
• Capacitive coupling isolation technology

Applications

• Industrial automation systems
• Medical equipment signal isolation
• Power metering applications

Procurement Notes

Verify the specific suffix 'F' indicates reinforced isolation ratings compared to standard variants. Confirm the 'Q' suffix denotes reel packaging specifications. Ensure compatibility with SSOP-16 footprint requirements during PCB layout. Check humidity sensitivity levels for proper storage and handling procedures before assembly.

Selection Notes

Select this component when reinforced isolation barriers are required for safety-critical applications. The high insulation voltage rating suits environments with significant potential differences between circuits. Consider the unidirectional nature of the channels when designing signal flow paths. Evaluate power consumption against system thermal constraints given the fixed operating current.

Part Context

This part belongs to the ISO7740 series of high-speed digital isolators. It shares the same package and channel count as other ISO7740 variants but differs in isolation certification levels. The series is designed for general-purpose isolation needs where robust electromagnetic compatibility is essential for reliable operation.

Replacement Considerations

ISO7740DBQR serves as a basic isolation alternative within the same package.