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Digital Electronics - Logic Families and Their Characteristics - Discussion

Discussion Forum : Logic Families and Their Characteristics - General Questions (Q.No. 32)
Logic Families and Their Characteristics
32.
When is a level-shifter circuit needed in interfacing logic?
A level shifter is always needed.
A level shifter is never needed.
when the supply voltages are the same
when the supply voltages are different
Answer: Option
Explanation:
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