Question

The logic ‘0’ of ECL is represented as ______V and logic ‘1’ is represented as ______V.

(a) 1, 1.65

(b) 0.9, 1.75

(c) 1.2, 2.35

(d) 1.9, 4.3

I got this question in semester exam.

The above asked question is from Logic Families in chapter Digital Circuits of Analytical Instrumentation

Answer 1

Correct option is (b) 0.9, 1.75

Explanation: The logic ‘0’ of ECL is represented as 0.9 V and logic ‘1’ is represented as 1.75 V. ECL stands for emitter-coupled logic.