Discussion :: Digital Electronics
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Assertion (A): Even if TTL gates and CMOS gates used in a realization have the same power supply of + 5 V, suitable circuit is needed to interconnect them
Reason (R): VOH, VOL, VIH and VIL of a TTL gave are respectively 2.4, 0.4, 2 and 0.8 V respectively. If supply voltage is + 5 V. VIL and VIH for CMOS gate for the supply voltage of + 5 V are 1.5 V and 3.5 V respectively.
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A.
Both A and R are correct and R is correct explanation of A
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B.
Both A and R are correct but R is not correct explanation of A
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C.
A is true, R is false
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D.
A is false, R is true
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Answer : Option A
Explanation :
Interfacing is necessary and interfacing depends on gate parameters like VOH, VOL, IIH, IIL.
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