The LM239DR2G is a Quad Comparator IC manufactured by ON Semiconductor and designed for use in a wide variety of applications. It features a wide operating voltage range of 3 to 36 volts, with an operating temperature range of -25 to 85 degrees C. It is equipped with four independent voltage comparators that can compare two analog inputs, and can be used to implement logic functions such as AND, OR, XOR, NOT, and NAND. It is also designed for superior performance in noise-sensitive applications, and it is offered in a small surface-mount package (8-SOIC).