NTA-NET (UGC-NET) Electronic Science (88) Digital Electronics-Logic Families Study Material (Page 2 of 4)

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Characteristics of Logic Families

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Different parameters which are used to characterize different logic families.

High-Level Input Current, IIH

This is the current flowing into (taken as positive) or out of (taken as negative) an input, when a High-level input voltage equal to the minimum High-level outpu…

… (1445 more words, 35 figures) …

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Evolution of Logic Families

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Logic families are fabricated using basic components such as resistors, diode, transistors and MOSFETs. Let us consider the basic logic circuits used in earlier logic families consisting of only diodes and transistors.

Diode Logic Circuit

In this logic circuit, diodes D1, D2 and Resistor R are fabricated into a single IC. A and B are inputs and Y is the output of the circuit. If and , both diodes D1 and D2 are forward biased and output i.e.. , logic 0. When and or and

… (328 more equations) …

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