The MLX92271LSE-AAA-001-SP from Melexis Technologies NV is a digital latch-type Hall effect magnetic switch with open-drain output, in a TSOT-23-3 package.
The MLX92271LSE-AAA-206-SP from Melexis Technologies NV is a digital latch Hall effect switch with unipolar and open-drain features, in a TSOT-3L package.