Why external interrupt shows delay..

[otcagon]

I am doing one project with STM32H743ZI.

I am using the external interrupt and copy the signal and set the output as input.

But is shows about 700us delay.

I do not know the reason why its gives such a big delay.

[Uwe Bonnes]

There is something wrong. Recheck your setup. Test on another board, etc.

[Tesla DeLorean]

What frequency is the signal?

Illustrate with a small/tight code example.

Perhaps Wire or Gates might be more suitable?