ISO7420EDR

Overview

The ISO7420EDR is a low-power, dual-channel digital isolator manufactured by Texas Instruments. It features capacitive coupling technology and operates within a supply voltage range of 3V to 5.5V. The device provides an isolation voltage of 2500Vrms and supports data rates up to 50Mbps with a common-mode transient immunity of 25kV/µs. It utilizes an 8-pin SOIC package and functions across a temperature range of -40°C to +125°C.

Feature Summary

• Capacitive coupling architecture for signal transmission
• Dual-channel unidirectional configuration
• Low power consumption design

Applications

• Industrial automation systems
• Medical equipment isolation
• Power metering circuits

Procurement Notes

Verify the specific suffix 'EDR' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the 8-SOIC package dimensions align with the target PCB footprint. Ensure the component meets RoHS3 compliance standards if mandated by the end-product regulations. Cross-reference the manufacturer part number against authorized distributor lists to guarantee authenticity and traceability.

Selection Notes

Select this component when a dual-channel solution with moderate data rates is required. The 50Mbps signaling rate suits applications where high-speed throughput is not critical but cost efficiency is important. The wide operating temperature range allows deployment in harsh industrial environments. Consider the unidirectional nature of the channels when designing circuit topology.

Part Context

This component belongs to the ISO742x family of low-power digital isolators from Texas Instruments. It serves as a general-purpose isolation solution for replacing traditional transformer or optical couplers in space-constrained designs. The series emphasizes energy efficiency while maintaining robust noise immunity through its capacitive isolation barrier.

Replacement Considerations

The ISO7420FED is listed as a parameter-equivalent substitute option.