ISO7221ADRG4

Overview

The ISO7221ADRG4 is a dual-channel digital isolator from Texas Instruments utilizing capacitive coupling technology. It operates within a supply voltage range of 3 V to 5.5 V and supports data rates up to 1 Mbps. The device provides 2500 Vrms isolation voltage with a common-mode transient immunity of 25 kV/µs. Key electrical parameters include a maximum propagation delay of 475 ns, typical rise/fall times of 1 ns, and a power dissipation of 390 mW. It functions reliably across an operating temperature range of -40°C to +125°C.

Feature Summary

• Dual-channel unidirectional signal transmission capability
• High common-mode transient immunity for noise rejection
• Capacitive coupling isolation technology
• Wide operating temperature range support

Applications

• Industrial process control systems
• Medical equipment signal isolation
• Power metering applications
• Inverter motor drives

Procurement Notes

Verify the specific suffix 'RG4' indicates tape-and-reel packaging when ordering. Confirm that the component meets RoHS3 compliance requirements for your region. Ensure the procurement channel sources genuine Texas Instruments products to avoid counterfeit risks associated with high-volume interface ICs.

Selection Notes

Select this model for designs requiring two isolated channels with unidirectional data flow. It is suitable for replacing legacy optocouplers where higher speed and lower power consumption are needed. Consider the ISO7221ADR variant if tube or cut-tape packaging is preferred over the standard reel format.

Part Context

This component belongs to the ISO722x family of general-purpose digital isolators. It shares the same SOIC-8 package footprint as other variants in the series, facilitating pin-compatible upgrades. The device integrates both transmitter and receiver circuits on a single silicon die.

Replacement Considerations

ISO7221ADR serves as a direct alternative with identical electrical specifications but different packaging options.