ISO7721FBDWR

Overview

The ISO7721FBDWR is a dual-channel digital isolator from Texas Instruments featuring 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 provides an isolation rating of 5000 Vrms with a typical propagation delay of 17 ns. It functions reliably across an operating temperature range of -40°C to +125°C, drawing a maximum quiescent current of 7.3 mA per channel.

Feature Summary

• Robust electromagnetic compatibility performance for noisy industrial environments
• High common-mode transient immunity ensuring signal integrity
• Dual-channel unidirectional configuration for isolated bidirectional communication

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reinforced insulation barriers
• Power metering applications with high-voltage separation needs

Procurement Notes

Verify the specific suffix 'F' indicates enhanced EMC specifications compared to standard variants. Confirm the 'BDW' package designation matches the required SOIC-8 footprint and thermal characteristics. Ensure the component meets RoHS compliance requirements for your target market regulations before finalizing procurement orders.

Selection Notes

Select this component when high-speed data transmission up to 100 Mbps is required alongside robust noise immunity. The wide operating temperature range makes it suitable for harsh industrial conditions. Consider the low power consumption relative to other isolators in the same speed class for battery-operated or thermally constrained designs.

Part Context

This part belongs to the ISO7721 family of digital isolators designed for basic and reinforced insulation applications. It utilizes Texas Instruments' silicon dioxide (SiO2) isolation technology to provide reliable signal transmission between isolated circuits while maintaining safety standards for electrical isolation.

Replacement Considerations

Direct replacements include the ISO7721FBDR variant which shares identical electrical specifications but may differ in packaging quantity or reel configuration. Verify pinout compatibility and insulation ratings when substituting with other dual-channel isolators from different manufacturers.