The LM111, is a voltage comparator that has input currents nearly a thousand times lower than devices such as the LM106 and LM710. It is also designed to operate over a wider range of supply voltages: from standard +15V op amp supplies down to the single 5V supply used for IC logic. Its output is compatible with RTL, DTL and TTL as well as MOS circuits. Further, it can drive lamps or relays, switching voltages up to 50V at currents as high as 50mA.