GATE EE 1998 | Logic Families and Memories Question 5 | Digital Electronics

GATE EE 1998

MCQ (Single Correct Answer)

-0.3

The open collector outputs of two$$2$$-inputs $$NAND$$ gates are connected to a common pull up resistor. If the input to the gates are $$P,Q$$ and $$R,S$$ respectively, the output is equal to

$$\overline {PQ} \,.\,\overline {RS} $$

$$\overline {PQ} \,+\,\overline {RS} $$

$$PQ+RS$$

$$PQRS$$

GATE EE 1998

MCQ (Single Correct Answer)

-0.3

In standard $$TTL$$ gates, the totem pole output stage is primarily used to

Increase the noise margin of the gate

Decrease the output switching delay

Facilitate a wired OR logic connection

Increase the output impedance of the circuit

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