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Explain Tri-state logic inverter with the help of a circuit diagram. Give its Truth Table.
Ans:
Tri-state Logic Inverter:
The functional diagram of Tri-state Logic Inverter is demonstrated in fig.(a) and the logic diagram of this is demonstrated in fig.(b). While the control input is LOW, the drive is removed from T3 and T4. Thus both T3 and T4 are cut-off and the output is in the third state. While the control input is HIGH, the output Y is Logic 1 or 0 depending upon the data input. Tri-state Logic Inverter's truth table is given in Table no.1
Fig.(a) Functional Diagram of Tri-state Logic Inverter
Fig.(b) Logic Diagram of Tri-state Logic Inverter
Data Input
Control
Data Output
0
High - Z
1
Table no.1 Truth Table of Tri-state Logic Inverter
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