4DIR0400HAXUMA1

Overview

The Infineon Technologies 4DIR0400HAXUMA1 is a quad-channel SPI digital isolator utilizing magnetic coupling technology. It provides galvanic isolation with a rated voltage of 5700 VRMS and supports data rates up to 40 Mbps. The device features a common-mode transient immunity (CMTI) of 100 kV/µs, ensuring reliable signal transmission in noisy environments. It operates within a supply voltage range of 2.7 V to 6.5 V and is qualified to AEC-Q100 standards for automotive applications. The component is housed in a 16-SOIC package with a width of 3.90 mm, designed for surface-mount installation.

Feature Summary

• Provides high-speed serial communication isolation via SPI interface
• Utilizes magnetic coupling technology for robust signal integrity
• Offers high common-mode transient immunity for noise rejection
• Automotive-grade qualification ensures reliability in harsh environments

Applications

• Automotive electronic control units requiring isolated communication
• Industrial systems needing galvanic isolation for sensor interfaces
• Power electronics gate driver circuits with isolated feedback
• Medical equipment requiring patient isolation barriers

Procurement Notes

This component has been officially discontinued by the manufacturer. Verification of availability should focus on remaining stock from authorized distributors or secondary market suppliers. Buyers must confirm the authenticity and storage conditions of existing inventory, as lead times are no longer guaranteed by the original producer. Alternative sourcing strategies should be prioritized due to the end-of-life status.

Selection Notes

Engineers should evaluate this part only if legacy compatibility is strictly required. Given its discontinuation, design-in efforts should prioritize newer generations within the ISOFACE family that offer equivalent electrical specifications but with assured long-term supply. Reviewing updated datasheets for successor models is recommended to ensure alignment with current manufacturing capabilities and automotive quality standards.

Part Context

The 4DIR0400HAXUMA1 belongs to Infineon's ISOFACE family of digital isolators, which leverages proprietary magnetic coupling technology. This series is designed to replace traditional optocouplers in high-speed applications, offering superior performance in terms of speed, power consumption, and lifetime stability. The specific model represents a quad-channel variant optimized for SPI protocols in automotive and industrial sectors.

Replacement Considerations

Publicly confirmed substitute part numbers include 4DIR1400HAXUMA1 and 4DIR1420HAXUMA1. These alternatives provide similar functionality within the same product family. Engineers should verify pinout compatibility and electrical parameter equivalence before transitioning designs to these replacement components.