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Home ‣ Digital Electronics ‣ Integrated-Circuit Logic Families Comments
  • Question

  • Usually P-MOS and N-MOS circuits are identical with the exception of the voltage polarities.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • True 

    • Integrated-Circuit Logic Families problems

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    • 1. The TTL HIGH level source current is higher than the LOW level sinking current.

    • Options
    • A. True
    • B. False
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    • 2. CMOS stands for "complementary metal-oxide semiconductors" and the FETs are normally enhancement mode devices.

    • Options
    • A. True
    • B. False
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    • 3. The abbreviated designator for a HIGH input voltage is VIH.

    • Options
    • A. True
    • B. False
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    • 4. The major advantage of CMOS logic circuits over TTL is very low power consumption.

    • Options
    • A. True
    • B. False
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    • 5. An unused input of a NAND gate can be left unconnected, pulled high by a pull-up resistor and tied together with another input and not change the logic output.

    • Options
    • A. True
    • B. False
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    • 6. The time it takes for a square wave to go from 10% to 90% of its voltage level is called propagation delay.

    • Options
    • A. True
    • B. False
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    • 7. A common means for measuring and comparing the overall performance of an IC family is the speed-power product.

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    • A. True
    • B. False
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    • 8. The noise margin for TTL is 0.8 V.

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    • A. True
    • B. False
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    • 9. The data sheet for the 74 series of TTL ICs shows that Vcc has a range of 4.5 V to 5.5 V.

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    • A. True
    • B. False
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    • 10. The dc noise margins calculated using the proper values from a standard TTL data sheet are the worst-case margins. The typical dc noise margins are usually somewhat higher.

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    • A. True
    • B. False
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