The Fujitsu MB4204 is a Quad Comparator which consists of four independent channels. The MB4204 is designed to operate form either a single power or dual power supplies over a wide range of voltages. The input characteristics is equivalent of current industry standard comparator. Even though operated from a single power supply, the MB4204 is suitably designed to compare multiple signals in parallel and to be operated with battery because its input common mode voltage range includes ground potential and it requires low power supply current. The MB4204 can be high density mounted because it integrates 4 circuits on a chip in DIP/FPT-14-pin package. The MB4204 is pin compatible with LM339.