This part is a kind of semiconductor called LM358N.
Function of this product has Dual Operational Amplifier.
Manufacturers : Fairchild Semiconductor
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www.fairchildsemi.com LM2904,LM358/LM358A,LM258/ LM258A Dual Operational Amplifier Features • Internally Frequency Compensated for Unity Gain • Large DC Voltage Gain: 100dB • Wide Power Supply Range: LM258/LM258A, LM358/LM358A: 3V~32V (or ±1.5V ~ 16V) LM2904 : 3V~26V (or ±1.5V ~ 13V) • Input Common Mode Voltage Range Includes Ground • Large Output Voltage Swing: 0V DC to Vcc -1.5V DC • Power Drain Suitable for Battery Operation. Description The LM2904,LM358/LM358A, LM258/LM258A consist of two independent, high gain, internally frequency compensated operational amplifiers which were designed specifically to operate from a single power supply over a wide range of voltage. Operation from split power supplies is also possible and the low power supply current drain is independen [ ... ]