Schematic for sub-microsecond short signal-delay

inspired by this programming-questions-thread

I tried to find a pure digital electronic solution through simple digital integrated circuits like monoflops or similar but had no success so far.
The only thing I found so far was a pretty old part CD4098 monoflop

The datasheet of the CD4098-chip shows that for delay-times as short as 100 nanoseconds the chip is too slow.

So does anybody know of a much faster simple chip that could be used for signal-delays as short as 50 to 500 nano-seconds?
Second best solution would be a 1$ to 3$ cheap microcontroller. (But I doubt that there is one that fast and that cheap)

best regards Stefan

Look at the data sheet for 74121 TTL chip.
74121

Without actually testing it I would guess that using PIO on an RP2040 chip could do that.

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it must run with ~200MHz

A shift register?

But, as @kolaha said, 50ns means clocking at ~ 200MHz - and you may want significantly faster than that to get decent resolution ...

as it shall work with a single pulse the shiftregister should be without latch or must be with latch permanently enabled and the bit-output would have to be connected to the clock-input. Not sure if this would work.

best regards Stefan

just a simple serial-in, serial-out shift register - where the output just appears n clocks after the input (n being the number of statges)

50-500nS programmable delay line: https://www.digikey.com/en/products/detail/analog-devices-inc-maxim-integrated/DS1110S-500/1196760

Higher cost than you wanted, but I'm sure if you look around you can hit that cost target. Here's the whole listing at Digi-key

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lowercase 's' for seconds!

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Wow I did not know that there are so many chips for delay purposes.

The "Jelly bean" 74AHC123 monostable says that it's good down to 5ns pulses...

Hi Stefan
Many years ago I played with simple signal delay and pulse circuits using only nand gates and RC delay.
One idea was to use the propagation delay time of the nand gate so I NAND ed the signal with the signal delayed through a chain of nands.
image

You can trim the delay using an RC and you can use schmitt gates for more precise transitions.
image

We also tried using a length of coax for the delayed part.
All good fun.

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