LM339MX.
14-SOIC (0.154, 3.90mm Width)
52994001-LM339MX.
LM339-N LOW POWER LOW OFFSET VOL
The operating temperature is the range of ambient temperature within which a power supply, or any other electrical equipment, operate in. This ranges from a minimum operating temperature, to a peak or maximum operating temperature, outside which, the power supply may fail.