A quad 2-input NAND gate is hardly the most exciting or ... shares this with its near-contemporary 4000 series CMOS. In a digital circuit containing 74 series devices the moment during logic ...

and you can use A as input 1 and C as input 2, with the gate working as a two-input CMOS NAND gate. Output Y is also high when Q3 is opened and Q1 and Q2 are conducting. The output is low when Q5 ...