End equipment that use a centralized power supply (such as network servers, optical modules, and others) require the monitoring of power buses to protect the components. This monitoring or supervision is accomplished using a window comparator. A window comparator monitors a signal input for upper- and lower-threshold violations. A trigger signal is generated when the threshold violations occur. Multichannel monitoring is required to supervise all power supplies available in a module. The DACx3508 provides an easy-to-use, low-footprint method to address this requirement. Figure 9-3 shows how the DAC53508 is used to create a programmable window comparator.