The Microchip Technology Inc. MCP6561/1R/1U/2/4 families of CMOS/TTL-compatible comparators are offered in single, dual and quad configurations. These comparators are optimized for low-power 1.8V, single-supply applications with greater than rail-to-rail input operation. The internal input hysteresis eliminates output switching due to internal input noise voltage, reducing current draw. The push-pull output supports rail-to-rail output swing and interfaces with CMOS/TTL logic. They are suitable for laptop computers, mobile phones, RC timers, alarm and monitoring circuits, window comparators, and multivibrators.