LM111, LM211, LM311 are voltage comparators with low input currents. It is also designed to operate on a wide range of supply voltages: from standard ±15V operational amplifier supplies to a single +5V supply used for IC logic. Its outputs are compatible with RTL-DTL and TTL as well as MOS circuits and can switch voltages up to +50V at output currents up to 50mA.
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