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Digital Electronics
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Integrated-Circuit Logic Families
Comments
Question
A logic probe is placed on the output of a digital circuit and the probe lamp is dimly lit. This display indicates ________.
Options
A. that an open or bad logic level exists
B. a high level output
C. a high-frequency pulse train
D. that the supply voltage is low
Correct Answer
that an open or bad logic level exists
Integrated-Circuit Logic Families problems
Search Results
1. In a DIP the spacing between pins is typically ________.
Options
A. 5 mils
B. 10 mils
C. 50 mils
D. 100 mils
Show Answer
Scratch Pad
Discuss
Correct Answer: 100 mils
2. ________ is ideally suited for applications using battery power or battery backup power.
Options
A. MOS
B. P-MOS
C. N-MOS
D. CMOS
Show Answer
Scratch Pad
Discuss
Correct Answer: CMOS
3. When the outputs of several standard TTL gates are connected together, the gate outputs produce more fan-out.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: False
4. The maximum output voltage recognized as a LOW by a TTL gate is 2.0 V.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: False
5. The output current capability for a HIGH output condition is called a source current.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: True
6. The output current for a LOW output is called a(n) ________.
Options
A. sink current
B. ground current
C. exit current
D. fan-out
Show Answer
Scratch Pad
Discuss
Correct Answer: sink current
7. The number of gates that can be connected to a single output without exceeding the current ratings of the gate is called ________.
Options
A. fan-out
B. propagation
C. dissipation
D. SSI
Show Answer
Scratch Pad
Discuss
Correct Answer: fan-out
8. The HIGH logic level for a standard TTL output must be at least ________.
Options
A. 2.4 V
B. 2 V
C. 0.8 V
D. 5 V
Show Answer
Scratch Pad
Discuss
Correct Answer: 2.4 V
9. The power dissipation of a CMOS IC will ________.
Options
A. decrease with frequency
B. increase with gate size
C. decrease with gate size
D. increase with frequency
Show Answer
Scratch Pad
Discuss
Correct Answer: increase with frequency
10. The minimum input voltage recognized as HIGH by a TTL gate is ________.
Options
A. 2.0 V
B. 2.4 V
C. 0.8 V
D. 5.0 V
Show Answer
Scratch Pad
Discuss
Correct Answer: 2.0 V
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