Advanced Microprocessors


Advanced Microprocessors

  1. The switching speed of ECL is very high because—









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    Switching speed is always determined in terms of the access time. During switching any device may take more access time in the saturation region, whereas in the ECL logic as the transistor is prevented from going into the saturation, results in very low access time i.e., high switching speed. Hence alternative (D) is the correct answer.

    Correct Option: D

    Switching speed is always determined in terms of the access time. During switching any device may take more access time in the saturation region, whereas in the ECL logic as the transistor is prevented from going into the saturation, results in very low access time i.e., high switching speed. Hence alternative (D) is the correct answer.


  1. The allowable supply voltage range for TTL logic gate family is—









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    NA

    Correct Option: C

    NA



  1. Identify which is not a saturated logic gate family from the following?









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    ECL is a non-saturated logic family, because during the operation transistor is prevented from going into the saturation.

    Correct Option: D

    ECL is a non-saturated logic family, because during the operation transistor is prevented from going into the saturation.


  1. Identify the logic gate family which consumes maximum power and which has minimum propagation delay—









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    A major drawback in the ECL logic is that a very low value of resistors is required, which result in a constant current in the storage cell. This constant current causes relatively higher power dissipation as compared to the TTL or CMOS or DCTL logic gate family.

    Correct Option: C

    A major drawback in the ECL logic is that a very low value of resistors is required, which result in a constant current in the storage cell. This constant current causes relatively higher power dissipation as compared to the TTL or CMOS or DCTL logic gate family.



  1. Identify the logic gate family which consumes less power and which has maximum fan-out—









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    NA

    Correct Option: D

    NA