Digital Electronics - Logic Families and Their Characteristics

Exercise :: Logic Families and Their Characteristics - General Questions

31. 

What is the advantage of using low-power Schottky (LS) over standard TTL logic?

A. more power dissipation
B. less power dissipation
C. cost is less
D. cost is more

Answer: Option B

Explanation:

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32. 

When is a level-shifter circuit needed in interfacing logic?

A. A level shifter is always needed.
B. A level shifter is never needed.
C. when the supply voltages are the same
D. when the supply voltages are different

Answer: Option D

Explanation:

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33. 

A TTL totem-pole circuit is designed so that the output transistors:

A. are always on together
B. provide linear phase splitting
C. provide voltage regulation
D. are never on together

Answer: Option D

Explanation:

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34. 

The most common TTL series ICs are:

A. E-MOSFET
B. 7400
C. quad
D. AC00

Answer: Option B

Explanation:

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35. 

Fan-out is determined by taking the ________ result(s) of ________.

A. smaller,
B. larger,
C. smaller,
D. average,

Answer: Option C

Explanation:

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