ISO7242CDWR

Overview

The ISO7242CDWR is a quad digital isolator from Texas Instruments utilizing capacitive coupling technology. It provides four independent channels with a 2/2 input-output configuration and unidirectional signal transmission. The device offers a 2500 Vrms isolation voltage and supports data rates up to 25 Mbps. It operates within a supply voltage range of 3.15V to 5.5V and functions across an extended temperature range of -40°C to +125°C. Packaged in a 16-pin SOIC, it features a minimum common-mode transient immunity of 25 kV/µs.

Feature Summary

• Capacitive coupling architecture for high-speed digital signal isolation
• Quad channel design with 2/2 split configuration
• High common-mode transient immunity capability
• Extended industrial operating temperature range

Applications

• Industrial automation control systems
• Medical equipment signal isolation
• Power metering interface circuits
• Inverter gate drive isolation

Procurement Notes

Verify the specific suffix 'CDWR' to confirm the commercial temperature grade and tape-and-reel packaging format. Ensure compatibility with the target PCB footprint for the 16-SOIC package. Confirm that the 25 Mbps data rate meets system requirements, as higher-performance variants like the ISO7242MDWR exist within the same family.

Selection Notes

Select this component when a cost-effective solution for moderate-speed isolation is required. The 25 Mbps rate suits many standard communication protocols but may be insufficient for high-speed interfaces requiring 150 Mbps or more. Consider the 2500 Vrms rating against system insulation requirements and verify power consumption needs against other low-power alternatives in the ISO724x series.

Part Context

This part belongs to the ISO7242C series of quad digital isolators. It shares the same physical package and basic functionality with the ISO7242MDWR but differs in performance specifications, specifically offering lower data rates and propagation delays optimized for general-purpose applications rather than high-speed data acquisition.

Replacement Considerations

ISO7242MDWR offers higher speed (150 Mbps) and better pulse width distortion specs. ISO7241CDWRG4 provides a 3:1 channel configuration instead of 2:2.