ISO7221CHD

Overview

The ISO7221CHD is a dual-channel digital isolator from Texas Instruments, utilizing capacitive coupling technology. It features a data rate of 25 Mbps and operates within an extended temperature range of -55°C to +175°C. The device provides 2500 Vrms isolation voltage and supports a supply voltage of 3V to 5.5V. Packaged in an 8-SOIC format, it offers bidirectional signal transmission with a propagation delay of 52 ns.

Feature Summary

• Extended high-temperature operation up to 175°C
• Bidirectional signal transmission capability
• High common-mode transient immunity

Applications

• Industrial automation systems requiring high thermal stability
• Automotive electronics operating in extreme environments
• Medical equipment with strict isolation requirements

Procurement Notes

Verify the specific suffix 'HD' against official Texas Instruments documentation to confirm the high-temperature grade and package variant. Ensure compatibility with system thermal management strategies due to the extended operating range. Cross-reference datasheet revisions for any design changes affecting pinout or electrical characteristics before integration.

Selection Notes

Select this component when standard industrial temperature ranges are insufficient for the application environment. The high-temperature rating makes it suitable for harsh conditions where reliability is critical. Compare power consumption and isolation voltage requirements against other ISO722x variants to ensure optimal fit for the specific circuit design constraints.

Part Context

Part of the ISO722x family of digital isolators, designed for robust signal transmission across isolation barriers. This series leverages silicon dioxide (SiO2) insulation technology for high reliability and low power consumption. The ISO7221CHD specifically targets applications demanding performance beyond standard commercial or industrial temperature limits.

Replacement Considerations

ISO7221CDR

FAQ

What is the maximum operating temperature for the ISO7221CHD?

The ISO7221CHD supports an extended operating temperature range up to +175°C.

Does the ISO7221CHD support bidirectional communication?

Yes, the device features bidirectional channels allowing signal transmission in both directions.