Texas Instruments’ 5400 and 7400 TTL quad 2-input NAND gate has been in continuous production since 1964 and is the progenitor of what is probably the most numerous breed of integrated circuits, ...
the logic diagram represents an XOR gate implemented with NAND gates. The timing diagram for the output C is shown in Figure 7.24. Figure 7.24: Timing diagrams for inputs and output of the logic ...