Which of the following logic families has the highest fan-out?1 pointTTLCMOSECLIIL
Question
Which of the following logic families has the highest fan-out?
- TTL
- CMOS
- ECL
- IIL
Solution
The logic family with the highest fan-out is TTL (Transistor-Transistor Logic).
Here's why:
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Fan-out refers to the number of digital inputs that the output of a single logic gate can feed. Most TTL gates can drive up to 10 Low-power Schottky TTL inputs.
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TTL has a higher fan-out compared to CMOS, ECL, and IIL. For instance, CMOS usually has a fan-out of about 50, while ECL has a fan-out of 25. IIL has a relatively low fan-out as well.
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Therefore, among the options given, TTL has the highest fan-out.
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