ADUM4154ARIZ

Overview

The ADUM4154ARIZ is a 7-channel digital isolator from Analog Devices, optimized for SPI interfaces. It supports up to four slave devices with unidirectional data transmission at 250 kb/s. Key electrical parameters include a 5000 Vrms isolation voltage, 25 ns propagation delay, and operation between 3 V and 5.5 V. The device operates within a -40°C to +125°C temperature range using magnetic coupling technology in a 20-SOIC package.

Feature Summary

• Optimized for multiple slave SPI interface applications
• Provides robust galvanic isolation via magnetic coupling
• Supports unidirectional data transmission for bus separation

Applications

• Multi-slave SPI communication systems
• Industrial process control isolation
• Medical equipment signal isolation

Procurement Notes

Verify the specific suffix 'I' indicates industrial temperature range (-40°C to +125°C) and 'Z' denotes lead-free status. Confirm package type is SOIC-20. Check current availability as distribution may vary by region. Ensure compatibility with system voltage levels of 3V or 5V.

Selection Notes

Select this component when isolating multiple SPI slaves from a single master is required. It offers high common-mode transient immunity suitable for noisy environments. Consider power consumption and channel count requirements against other ADuM series options.

Part Context

Part of the ADuM4154 family of digital isolators designed specifically for SPI applications. This series enables efficient board space reduction by integrating multiple channels into a single package, simplifying design for complex multi-device serial communications.

Replacement Considerations

Check ADUM4154ARIZ-RL for reel packaging variant. Verify ADUM3154ARSZ-RL7 for similar functionality but different pinout or performance characteristics.