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Home Digital Electronics 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
    • Discuss
    • 2. ________ is ideally suited for applications using battery power or battery backup power.

    • Options
    • A. MOS
    • B. P-MOS
    • C. N-MOS
    • D. CMOS
    • Discuss
    • 3. When the outputs of several standard TTL gates are connected together, the gate outputs produce more fan-out.

    • Options
    • A. True
    • B. False
    • Discuss
    • 4. The maximum output voltage recognized as a LOW by a TTL gate is 2.0 V.

    • Options
    • A. True
    • B. False
    • Discuss
    • 5. The output current capability for a HIGH output condition is called a source current.

    • Options
    • A. True
    • B. False
    • Discuss
    • 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
    • Discuss
    • 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
    • Discuss
    • 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
    • Discuss
    • 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
    • Discuss
    • 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
    • Discuss


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