Multiple choice

The fastest logic family is

  1. TTL

  2. ECL

  3. RTL

  4. DTl
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

ECL (Emitter-Coupled Logic) is the fastest logic family because its transistors never saturate, eliminating storage delay. TTL and its predecessors like RTL and DTL have slower switching speeds due to saturation effects. ECL achieves nanosecond propagation delays at the cost of higher power consumption.

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