24-Channel Automotive Switch Monitor

The MAX13362 is a 24-channel automotive contact mon- itor designed as an Interface between mechanical switches and low-voltage processors or other Logic cir- cuits. The IC operates over a voltage range of 5.5V to 28V, and withstands voltages up to 40V. It protects low- voltage circuitry from high voltages and reverse battery conditions. The MAX13362s low-current operation under all operating conditions makes it suitable for use in elec- tronic control units (ECUs) that are connected directly to the automotive battery. It has an adjustable scan mode that significantly reduces the current drawn in key-off. The MAX13362 features an SPI Interface to monitor the Switch status and set the device configuration. Multiple MAX13362s CAN be cascaded to support any multiple of 24 switches. The MAX13362 is available in a 6mm x 6mm, 40-pin thin QFN package and operates over the -40C to +125C temperature range. By Maxim Integrated Products