There are two Dies inside the package. With these two Dies, you can achieve Diversity and Redundancy. It can therefore be used as a product for applications with functional safety requirements.
Diversity refers to reducing the risk of failure due to the same factor by detecting magnetism with two different methods for each die.
Redundancy means that two dies use the same magnetic detection method, and when these two corresponding outputs are abnormal, it is possible to reliably detect that the application is in an abnormal state.