ADUM3474CRSZ

Overview

The ADUM3474CRSZ is a four-channel digital isolator from Analog Devices, utilizing iCoupler magnetic coupling technology. It operates within a supply voltage range of 3 V to 5.5 V and supports data rates up to 25 Mb/s. The device provides an isolation voltage of 2500 Vrms with a common-mode transient immunity of 25 kV/µs. Key electrical parameters include a propagation delay of 45 ns and a maximum operating temperature of +105 °C. Packaged in a 20-lead SSOP, it features unidirectional signal paths and integrated transformer drivers for robust performance.

Feature Summary

• Integrates four independent digital channels with internal transformer drivers for high-speed signal transmission.
• Provides galvanic isolation via magnetic coupling technology to block ground loops and suppress noise.
• Ensures signal integrity through high common-mode transient immunity capabilities.

Applications

• Industrial automation systems requiring isolated communication interfaces
• Medical equipment needing reliable patient isolation barriers
• Power electronics control circuits demanding high-voltage isolation

Procurement Notes

Verify the specific suffix CRSZ against official Analog Devices documentation to confirm package type and tape-and-reel options. Confirm RoHS compliance status directly with the manufacturer or authorized distributors. Ensure the component matches the required thermal and electrical specifications for your design environment before finalizing procurement.

Selection Notes

Select this component when four isolated channels are required within a single package. Consider the 2500 Vrms isolation rating and 25 kV/µs CMTI for noisy environments. Evaluate the 20-SSOP footprint against available PCB space. Compare power consumption and propagation delay requirements against alternative isolators if lower latency or reduced current draw is critical.

Part Context

This part belongs to the ADUM347x series of iCoupler digital isolators. These devices integrate analog and digital functions on a monolithic CMOS substrate. The series offers various channel configurations and polarity options. The ADUM3474 specifically provides four unidirectional channels, distinguishing it from bidirectional variants in the same family.

Replacement Considerations

Check for ADUM3471CRSZ or ADUM3472CRSZ if different channel counts or polarities are needed. Verify pinout compatibility and isolation ratings before substituting. Consult the latest datasheet correction notices for any functional updates affecting equivalent parts.