The SNx4xx00 devices are quadruple, 2-input NAND gates which perform the Boolean function Y = A .B or Y = A + B in positive logic.
The operating voltage of SN74xx00 is from 4.75-V to 5.25-V VCC. The operating voltage of SN54xx00 is from 4.5-V to 5.5-V VCC. The SN54xx00 devices are rated from –55°C to 125°C whereas SN74xx00 device are rated from 0°C to 70°C.
Table 1 lists the functions of the devices.