The LM393ADT is a dual-channel, low-power, precision monolithic comparator from STMicroelectronics. It has a wide supply voltage range, from 2.4 V to 18 V, and features rail-to-rail input and output stages with a 0.75 V hysteresis. It also has a wide operating temperature range from -40 °C to 125 °C. The LM393ADT provides a low power operation, fast response time and accurate power supply rejection ratio. The device is well suited for low power, low voltage applications such as level detectors, battery-backed on/off switches, analogue to digital converters and window comparators.