ISO7761DW

Overview

The ISO7761DW is a reinforced six-channel digital isolator from Texas Instruments, housed in a 16-pin SOIC package. It features five unidirectional channels and one bidirectional channel, supporting data rates up to 100 Mb/s with a typical propagation delay of 11 ns. The device operates on a supply voltage range of 2.25 V to 5.5 V and provides an insulation voltage of 5000 Vrms via capacitive coupling. It exhibits high common-mode transient immunity of 85 kV/µs and functions within a temperature range of -55°C to +125°C.

Feature Summary

• Reinforced isolation architecture providing robust electromagnetic compatibility performance
• Six-channel configuration with mixed unidirectional and bidirectional signal paths
• High-speed data transmission capability at 100 Mb/s with low pulse width distortion
• Wide operating temperature range suitable for demanding industrial environments

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reinforced safety isolation
• Power metering applications with high-voltage separation needs
• Inverters and motor drives for control signal isolation

Procurement Notes

Verify the specific suffix 'DW' confirms the SOIC-16 package and tape-and-reel or tube availability as required by your assembly process. Confirm RoHS compliance status through official manufacturer documentation before integration. Ensure design-in reviews account for the humidity sensitivity level specified in the datasheet to prevent moisture-related damage during storage and reflow soldering.

Selection Notes

Select this component when reinforced isolation ratings are mandatory rather than basic isolation. The 5/1 channel split suits designs needing multiple isolated outputs with a single return path. Consider the 85 kV/µs CMTI rating for noisy environments. Compare power consumption against alternatives if battery life is critical, noting the quiescent current specifications vary by channel configuration.

Part Context

This part belongs to the ISO7761 family of high-speed digital isolators. It complements other variants like the ISO7761DWR (same function, different reel packaging) and automotive-grade ISO7761QDWRQ1. The family addresses the need for compact, high-performance isolation in space-constrained PCB layouts while maintaining safety standards for industrial and medical sectors.

Replacement Considerations

ISO7761DWR serves as a functional equivalent with identical electrical characteristics but differs in packaging format. Verify pinout compatibility and thermal performance similarities before substitution. No direct cross-manufacturer replacements are confirmed in public documentation; ensure isolation voltage and CMTI ratings match application requirements when evaluating alternatives.