Which is not a characteristic of logic families

By Himanshu Bajpai|Updated : July 26th, 2022

Which is not a characteristic of logical families 

  1. Power dissipation
  2. Noise Immunity
  3. Speed
  4. Gain

Answer - D. Gain

Gain is not a characteristic of logical families. 


Logic families indicate the types of logic circuits used in the IC. The main categories of logic families include:

  • TTL (Transistor-Transistor Logic)
  • CMOS (Complementary MOS)
  • ECL (Emitter Coupled Logic)

Characteristics of Logic Families

The key traits of Logic families are as follows

  • Speed: The amount of time that passes between applying input and changing the circuit's output is what defines a logic circuit's speed.
  • Fan-in establishes the maximum number of inputs the logic gate can process.
  • Fan-out: determines how many circuits a gate is capable of driving.
  • Noise immunity: The most noise a circuit can handle without harming the output.
  • Dissipation of Power: Power is lost when a circuit changes from one state to the next. 

Hence, Option (D) is the correct answer.

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