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[SOLVED] May I know what element is this sign presenting? (two inverter overlapping with each other but opposite directions)

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RichardLee150

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1725393481083.png

New to the schematics/layout, not sure what is this sign presenting and why the element looks like this, saw it in a D flip-flop schematics.
 

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That's a transmission gate or a complementary MOS switch. It is usually used to effectively pass signals in the entire range of voltages from supply to ground:
1725398567155.gif
 

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Hi,

it´s rather close to the hydraulics symbol for a (bidirectional) valve.

Glad that they managed to use a quite similar symbol for electronics.
Electronics and hydraulics have so much in common – when it comes to behavior.

Klaus
 

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