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why have the tri-state buffer based buses higher delay?

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Daniel M.E. Lee

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tri-state buffer

why have the tri-state buffer based buses higher delay comparing to non tri-state buffer? why is the mux based bus more commonly used?

As I check standard cell library, there isn't too much delay gap between tri-state buffer and non tri-state buffer?
 

sr_gnomo

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tri-state buffer delay

i think that the tri-state bus is used to conect more devices that can interconnect with each other
the tipical bus-mux is more used to connect various devices to a single master device
also requires fewer components (the tri-state bus )resulting in less cost

I think it is well

let me now if so
sory for my inglish I'm learning to talk
best regards
Fernando
 

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