ISO721DRG4

Overview

The ISO721DRG4 is a general-purpose digital isolator manufactured by Texas Instruments, featuring a single channel of data transmission. It operates within a supply voltage range of 3V to 5.5V and provides an isolation voltage rating of 2500 Vrms using capacitive coupling technology. The device supports high-speed data rates up to 100 Mbps with a typical propagation delay of 8 ns. It is housed in an 8-SOIC package and is designed for operation across an extended temperature range from -40°C to +125°C.

Feature Summary

• Provides robust signal isolation between circuits using capacitive coupling technology.
• Supports high-speed data transmission with low propagation delay for efficient communication.
• Operates reliably over a wide temperature range suitable for industrial environments.

Applications

• General-purpose digital isolation in industrial automation systems
• Isolating microcontrollers from peripheral devices in embedded systems
• Signal isolation in medical equipment requiring electrical safety compliance

Procurement Notes

Verify the specific datasheet version and RoHS compliance status before procurement. Confirm that the SOIC-8 package dimensions match your PCB footprint requirements. Ensure the operating voltage range aligns with your system's power supply specifications. Check for any recent product change notifications regarding manufacturing sites or materials.

Selection Notes

Select this component when a single-channel isolator with high-speed performance is required. Consider the 2500 Vrms isolation rating for basic safety applications. Evaluate the 100 Mbps data rate against your system's bandwidth needs. Compare power consumption and package size against alternative isolators if space or energy efficiency is critical.

Part Context

This part belongs to the ISO721 family of digital isolators from Texas Instruments. It is designed as a cost-effective solution for replacing traditional optocouplers in many applications. The DRG4 suffix indicates the tape and reel packaging format and RoHS compliance. It shares the same functional core with other variants in the series but differs in packaging and specific ordering details.

Replacement Considerations

ISO721MDR is a higher-speed variant within the same family offering 150 Mbps data rates. ISO721DR is the non-RoHS compliant version of the same component. Verify pinout compatibility and thermal characteristics when substituting with these alternatives.