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Logic Families – 1 – 1

1. Which one of the following logic family ICs is fastest :

(a) TTL
(b) ECL
(c) CMOS
(d) DTL

ANSWER

EXPLANATION

2. Advanced schottky is a part of :

(a) ECL family
(b) CMOS family
(c) TTL family
(d)
 None of above

ANSWER

EXPLANATION

3. As compared to TTL, ECL has :

(a) Lower power dissipation
(b) Lower propagation delay
(c) Higher propagation delay
(d) 
Higher noise margin

ANSWER

EXPLANATION

4. Positive logic in a logic circuit is one in which :

(a) Logic 0 and 1 are represented by 0 and positive voltage respectively
(b) Logic 0 and, -1 are represented by negative and positive voltages respectively
(c) Logic 0 voltage level is higher than logic 1 voltage level
(d) Logic 0 voltage level is lower than logic 1 voltage level

ANSWER

EXPLANATION

1

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