ISO721MDG4

Overview

The ISO721MDG4 is a single-channel digital isolator from Texas Instruments, utilizing capacitive coupling technology. It operates within a supply voltage range of 3 V to 5 V and supports data rates up to 150 Mb/s. The device provides an isolation voltage of 2500 Vrms with a propagation delay of 17 ns. It is housed in an SOIC-8 package and functions across a temperature range of -40°C to +125°C.

Feature Summary

• Single-channel unidirectional signal transmission
• Capacitive coupling isolation architecture
• High common-mode transient immunity

Applications

• General-purpose digital isolation
• Industrial communication interfaces
• Power monitoring systems

Procurement Notes

Verify component status carefully as the ISO721MDG4 is officially listed as End-of-Life by Texas Instruments. Manufacturers have scheduled this part for obsolescence and discontinuation. Sourcing should focus on remaining stock or authorized distributors while confirming authenticity through datasheet cross-referencing before integration into new designs.

Selection Notes

Select this component only for legacy system maintenance or non-critical replacements where the specific SOIC-8 footprint and 150 Mb/s speed are required. Evaluate alternative active parts from the same family if long-term supply stability is necessary for production runs.

Part Context

This device belongs to the ISO721M series of general-purpose digital isolators. It serves as a robust interface solution for separating noisy digital signals between different voltage domains in embedded systems.

Replacement Considerations

ISO721MDR