LM339 is a voltage comparator IC from LMx39x series and is manufactured by many industries. The devices consist of four independent voltage comparators that are designed to operate from a single power supply. Also operation from dual supplies is possible, as long as the difference between the two supplies is 2 V to 36 V.
Four individually operated voltage comparators
Low noise interference among comparators
Single Supply Operation: +3.0 V to +36 V
Dual Supply Operation: +18V and -18V
Low Input Bias Current: 25 nA
Low Input Offset Current: ±5.0 nA
Low Input Offset Voltage
Input Common Mode Voltage Range to GND
Low Output Saturation Voltage: 130 mV @ 4.0 mA
TTL and CMOS compatible
ESD Clamps on the inputs increase reliability without affecting device operation
Pb−Free, Halogen Free/BFR Free and RoHS compliant