7420 / 74LS20 : Dual 4-Input NAND Gate
7420 General Description:
This device contains two independent gates each of which performs the logic NAND function.
7420 Absolute Max Ratings:
Supply Voltage: 7V
Input Voltage: 7V
Operating Free Air Temperature Range: 0°C to +70°C
Storage Temperature Range: -65°C to +150°C
7420 pin assignment:
7420 truth table function:

