TS339C,I,M is a micropower quad CMOS voltage comparator with extremely low supply current of 9µA/comparator, supply voltage range of 3V-16V, or ±1.5V-±8V, extremely low input bias current and input offset current of 1pA and 1pA respectively, input voltage range includes GND, input impedance is as high as 1012 ohms, fast response time of 1.5 microseconds, and is compatible with bipolar LM339.