ISO7821DWWR

Overview

The ISO7821DWWR is a dual-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 an insulation voltage of 5700 Vrms and a common-mode transient immunity of 100 kV/µs. Typical propagation delay is 11 ns with rise and fall times of 3.9 ns. It functions in temperatures from -55°C to +125°C and is housed in a 16-SOIC package.

Feature Summary

• Provides reinforced isolation certification for high-voltage safety applications
• Delivers high common-mode transient immunity to maintain signal integrity in noisy environments
• Supports bidirectional or unidirectional data transmission with low power consumption

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing certified reinforced isolation barriers
• Power metering circuits for accurate signal monitoring
• Inverter drives and motor control interfaces

Procurement Notes

Verify the specific suffix 'W' indicates tape-and-reel packaging when ordering. Confirm that the component meets UL 1577 standards if reinforced isolation is required for your application. Check RoHS compliance status as per the manufacturer's latest documentation before finalizing procurement specifications.

Selection Notes

Select this model for applications demanding high reliability and certified isolation ratings. Ensure the system voltage aligns with the 2.25 V to 5.5 V operating range. Consider the 16-SOIC footprint for PCB layout compatibility. Verify thermal requirements against the specified operating temperature range.

Part Context

This component belongs to the ISO7821 family of digital isolators. It shares core specifications with variants like ISO7821DW but differs in packaging format. The series is designed for robust performance in industrial and medical sectors where signal integrity and safety are critical.

Replacement Considerations

ISO7821DW serves as a tube-packaged alternative with identical electrical characteristics. ISO7821DWW offers similar specs in a wider SOIC package. Verify pinout and isolation ratings match before substituting.