ISO7231MDWR

Overview

The ISO7231MDWR is a triple-channel digital isolator from Texas Instruments, utilizing capacitive coupling technology. It features a data rate of 150 Mbps and supports a 2:1 or 1:2 input-to-output channel configuration. The device provides 2500 Vrms isolation voltage and offers a common-mode transient immunity (CMTI) of 25 kV/µs. Operating on a single supply voltage between 3.15 V and 5.5 V, it delivers propagation delays of up to 42 ns with rise/fall times of approximately 2 ns. Packaged in a 16-pin SOIC (DW) format, it functions within a temperature range of -40°C to +125°C.

Feature Summary

• Triple-channel architecture supporting flexible 2:1 or 1:2 signal routing configurations
• High-speed data transmission capability at 150 Mbps for efficient communication
• Robust noise rejection with 25 kV/µs common-mode transient immunity
• Wide operating temperature range suitable for demanding industrial environments

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reliable signal separation
• Power metering circuits for accurate data acquisition
• Inverters and motor drives for control signal isolation

Procurement Notes

Verify the specific suffix 'G4' against the ordered part number to ensure RoHS compliance and manufacturing standards match project requirements. Confirm that the tape-and-reel packaging aligns with automated assembly capabilities. Ensure the 16-SOIC footprint matches the PCB design constraints. Validate that the 2500 Vrms isolation rating meets the safety regulations for the intended application environment.

Selection Notes

Select this component when a triple-channel isolator with moderate speed (150 Mbps) is required. It is suitable for applications where 2500 Vrms isolation is sufficient compared to higher-rated variants. Consider the 16-pin SOIC package for standard surface-mount assembly processes. Evaluate the 2:1 or 1:2 channel flexibility against system topology needs before finalizing the design.

Part Context

This device belongs to the ISO723x family of high-speed digital isolators from Texas Instruments. It shares architectural similarities with other members like the ISO7230 and ISO7231CDWR but differs in speed ratings and isolation specifications. The family utilizes capacitive coupling for signal transmission, offering a compact alternative to magnetic or optical isolation technologies in modern electronic designs.

Replacement Considerations

The ISO7231MDW is the tube-packaged equivalent of this reel-part. For higher speed requirements, the ISO7231CDWR series offers 25 Mbps performance. Verify pinout compatibility and isolation voltage ratings when substituting with other third-party triple-channel isolators.