The LM211QD is a Differential Comparator with strobes and designed to operate from a wide range of power-supply voltages, including ±15V supplies for operational amplifiers and 5V supplies for logic systems. The output levels are compatible with most TTL and MOS circuits. This comparator is capable of driving lamps or relays and switching voltages up to 50V at 50mA. All inputs and outputs can be isolated from system ground. The outputs can drive loads referenced to ground, VCC+ or VCC-. Offset balancing and strobe capabilities are available and the outputs can be wire-OR connected. If the strobe is low, the output is in the off state, regardless of the differential input.