Digital Electronics - Logic Families and Their Characteristics - Discussion

Discussion Forum : Logic Families and Their Characteristics - General Questions (Q.No. 14)

Logic Families and Their Characteristics

14.

Using the schematic diagram of a TTL NAND gate, determine the state of each transistor (ON or OFF) when all inputs are high.

Q₁-ON, Q₂-OFF, Q₃-ON, Q₄-OFF

Q₁-ON, Q₂-ON, Q₃-OFF, Q₄-OFF

Q₁-OFF, Q₂-OFF, Q₃-ON, Q₄-ON

Q₁-OFF, Q₂-ON, Q₃-OFF, Q₄-ON

Answer: Option

Explanation:

No answer description is available. Let's discuss.

Discussion:

3 comments Page 1 of 1.

Yeah said: 3 years ago

At all high inputs, a NAND gate is off (based on truth table). At next state it will alternate, therefore OFF, ON, OFF, ON.

Archana said: 5 years ago

I think Q3 is On & Q4 is Off.

(1)

Pushpa said: 8 years ago

Anyone please explain it.

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