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A major advantage of ECL logic over TTL and CMOS is ________.

  • A.low power dissipation
  • B.high speed
  • C.both low power dissipation and high speed
  • D.neither low power dissipation nor high speed

Answer: B

Correct answer: high speed

ECL keeps its transistors out of saturation, so they switch very fast; the price is a large standing current and therefore high power dissipation. Speed is what it is chosen for, and power is what it costs.

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