Electronics and Communication Engineering - Digital Electronics

21. 

Choose the appropriate turn on and turn off time of a FET

A. 1 ns, 10ns
B. 6 ns, 18ns
C. 4 ns, 8 ns
D. 10 ns, 10 ns

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

22. 

Consider the following statements

  1. ECL has least propagation delay
  2. TTL has largest fan out
  3. CMOS has highest noise margin
  4. TTL has lowest power dissipation
Which of these are correct?

A. 1 and 3
B. 2 and 4
C. 3 and 4
D. 1 and 2

Answer: Option A

Explanation:

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23. 

In Schottky TTL, a Schottky diode is used for

A. forming the gate
B. connecting the resistor
C. clamping of the basic collector junction
D. none of the above

Answer: Option C

Explanation:

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24. 

The circuit of the given figure is

A. full adder
B. magnitude comparator
C. parity detector
D. none of the above

Answer: Option C

Explanation:

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25. 

Which of the following ICs has only one NAND gate?

A. 7410
B. 7420
C. 7430
D. 7447

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.