The SN74ALS00AN is a device from Texas Instruments that is part of the company's 74ALS family of logic gates. It is a Quad 2-Input NAND Gate with Schmitt Trigger Inputs. The device has four independent gates, each of which performs the Boolean function of AND followed by NOT. The four NAND gates feature Schmitt trigger input stages designed to provide improved noise immunity, reduced current requirements and an extended voltage range. With these features, the SN74ALS00AN can be used in many applications, such as switching, buffering, logic inverting, level shifting, and pulse generation.