ISO722DRG4

Overview

The ISO722DRG4 is a single-channel digital isolator from Texas Instruments, housed in an 8-pin SOIC package. It utilizes capacitive coupling technology to provide electrical isolation with a rated insulation voltage of 2500 Vrms. The device supports data rates up to 100 Mbps and operates within a supply voltage range of 3.0 V to 5.5 V. It features a propagation delay of 16 ns and low power consumption, making it suitable for high-speed signal transmission across isolated boundaries.

Feature Summary

• Provides robust galvanic isolation between circuits using capacitive coupling technology
• Supports high-speed data transmission with a maximum rate of 100 Mbps
• Operates reliably across a wide industrial temperature range from -40°C to +125°C

Applications

• Industrial communication systems requiring signal isolation
• Medical equipment needing patient isolation barriers
• Power metering applications for current and voltage sensing

Procurement Notes

Verify the specific datasheet revision and ordering suffix (RG4) to ensure compatibility with RoHS standards and tape-and-reel packaging requirements. Confirm that the 8-SOIC footprint matches your PCB layout constraints. Ensure the design accounts for the 2500 Vrms isolation rating and operating voltage limits specified in the official documentation.

Selection Notes

Select this component when a single channel of high-speed isolation is required. Compare against the dual-channel ISO7221 series if bidirectional or two-way isolation is needed. Consider the ISO7220 series for lower speed applications requiring unidirectional channels. Verify that the 100 Mbps data rate meets the system timing requirements.

Part Context

This part belongs to the ISO722 family of digital isolators from Texas Instruments. These devices are designed to replace traditional optocouplers in many applications, offering superior performance in terms of speed, power consumption, and size. The family includes variants with different channel counts and data rates.

Replacement Considerations

Direct replacements include other Texas Instruments parts within the ISO722 family, such as the ISO7221D for dual-channel needs. Cross-manufacturer equivalents should be verified against pinout, isolation voltage, and data rate specifications.