Hall switch adds diagnostics for automotive safety
What happened
Melexis introduced the programmable Hall switch MLX92342 for remote position detection in automotive systems such as seatbelt buckles. The 2-wire, PCB-less sensor IC provides a valid output and generates a diagnostic safety signal in less than 100 µs; this signal indicates a fault condition, allowing the ECU to distinguish a sensor malfunction from a valid buckle-state reading. With integrated on-chip diagnostics, the MLX92342 is certified as an ISO 26262 ASIL B SEooC and qualified to AEC-Q100. ESD protection is rated at 8-kV HBM, 15-kV system-level contact discharge, and 25-kV system-level indirect discharge. It supports magnetic latch, unipolar switch, and omnipolar switch configurations, with a magnetic operating range of 0.5 mT to 200 mT. Beyond seatbelt buckle detection, it can be used in window lifters, brake fluid level sensors, active air skirts, locks, valves, and actuators. The MLX92342 is available now, and the locked, pre-programmed MLX92341 is also available.
Impact and signal
Affected components and suppliers
Source and time
Source: EDN · 10/28/2026 · View original source
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