The SN74LS04D is a Hex Inverter from Texas Instruments. It is a low-power, high-speed, CMOS logic device with six independent, two-input inverters. It operates on supply voltages ranging from 2V to 6V and has an output drive capability of 50mA at 4.5V. The SN74LS04D features low-input current, high-noise immunity and level shifting. It is designed with Schottky circuitry and fast switching times to provide high-gain and reliability. The SN74LS04D is pin-compatible with existing TTL logic and offers enhanced performance over traditional TTL logic. This part is available in SOIC, PDIP, and VSSOP packages.