Allegro Systems has introduced the A3054KU and the A3054SU multiplexed Hall-effect sensor ICs, which have been designed to sense switch status and magnetic fields. The new devices are able to communicate their results via a two-wire power/signal bus. The new products feature digital analogue bipolar CMOS semiconductor fabrication technology and are suitable for use in building management, security or automotive applications. The A3054SU device operates at between -20 deg C and +84 deg C, while the A3054KU d
