Type Port expander Applications Ideal for industrial automation, motor control systems, PLCs, and Distributed Control Systems (DCS) On-board modules MAX14906 - quad-channel industrial digital input/output IC from Analog Devices Key Features Quad-channel digital input/output configuration, IEC 61131-2 compliant, adjustable high-side switch current limiting, fast signal transmission, supports 24V operation, built-in diagnostics, SPI interface, synchronization control, status indication and fault detection, and more Interface SPI Feature ClickID Compatibility mikroBUS™ Click board size L (57.15 x 25.4 mm) Input Voltage 3.3V or 5V,External