The MAX921CSA+T is an Analog Devices ultra low-power, single/dual-supply comparator IC that operates from a single 1.7 to 5.5V supply, drawing typically 1.1 µA of quiescent current. Providing excellent performance with very low operating current, the device features a 1.2V reference, a ±2mV maximum input offset voltage, and a typical response time of 1µs. Additionally, the MAX921CSA+T offers a single/dual output configuration, allowing it to be used in multiple systems. Additionally, it features a rail-to-rail input range, allowing it to be used with a wide voltage range. The IC also features open-drain outputs, making it suitable for interfacing with both CMOS and TTL logic circuits.