ISO721MDR

Overview

The ISO721MDR is a single-channel digital isolator from Texas Instruments, utilizing capacitive coupling technology. It operates within a supply voltage range of 3V to 5.5V and supports data rates up to 150Mbps. The device provides an isolation voltage of 2500Vrms and features a common-mode transient immunity (CMTI) of 25kV/µs. Propagation delays are typically 16ns for both high-to-low and low-to-high transitions, with pulse width distortion capped at 1ns. It functions reliably across an extended temperature range of -40°C to +125°C and is housed in an 8-SOIC package.

Feature Summary

• Capacitive coupling architecture enables high-speed signal transmission with robust noise immunity.
• Single unidirectional channel design simplifies integration into point-to-point communication links.
• Extended thermal stability ensures reliable operation in demanding industrial environments.

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment signal processing interfaces
• Power electronics control circuit isolation

Procurement Notes

Verify the specific suffix 'DR' confirms the tape-and-reel packaging format upon ordering. Confirm RoHS compliance status and manufacturing origin details through official Texas Instruments documentation prior to final procurement decisions. Ensure compatibility with standard SOIC-8 footprint requirements during PCB layout planning.

Selection Notes

Select this component when a single-channel isolator with 150Mbps speed is required. Consider the 2500Vrms isolation rating for basic insulation needs. Evaluate the 8-SOIC package size against available board space constraints. Compare power consumption characteristics against other isolator technologies if energy efficiency is a primary design constraint.

Part Context

This part belongs to the ISO721M family of high-speed digital isolators. It serves as a general-purpose solution for replacing traditional optocouplers in modern designs. The device offers improved performance metrics compared to legacy isolation technologies while maintaining pin-out compatibility with certain existing solutions.

Replacement Considerations

ISO721MDRG4 is a verified equivalent variant within the same product line.