The LM339M is an Adjustable and Comparator Quad Device by ON Semiconductor. This device is an integrated circuit with four independent precision voltage comparators which have common mode input voltage, ranging from 0 V to 32 V. It also has low power consumption, low bias current, low offset voltage, and high speed performance. It features TTL andMOS compatible outputs, hysteresis on all four comparators, and CMOS input compatible with single-ended or differential inputs. The LM339M is ideal for use in wide range of applications including analog to digital conversion, window comparator, timing, digital logic, and multiplexing.