Does propagation delay affects the data rate?
Does propagation delay affects the data rate?
(OP)
Hello,
I want to use 2 buffers each with a 6ns max. tpd
on a data line that changes at a 160MHz rate.
It's clear that the 2 buffers will add a 12ns delay
but does their tpd also limit the line data rate?
Thanks,
Seawave.
I want to use 2 buffers each with a 6ns max. tpd
on a data line that changes at a 160MHz rate.
It's clear that the 2 buffers will add a 12ns delay
but does their tpd also limit the line data rate?
Thanks,
Seawave.





RE: Does propagation delay affects the data rate?
Dan - Owner
http://www.Hi-TecDesigns.com
RE: Does propagation delay affects the data rate?
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RE: Does propagation delay affects the data rate?
RE: Does propagation delay affects the data rate?
Signal smearing limits the length of fibre optic lines. You may have a similar effect related to the delay of the device. There may be a finite time required for the signal pulses to stabilize in the internal circuits.
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Does propagation delay affects the data rate?
This is very much the case I was referring to. Even when rise times are not a factor, as the pulse width reduces to less than or equal to the tpd of the device, the output pulse starts to become shortened in width compared to the input pulse until ultimately the device will stop switching reliably. The propagation delay tpd is realiable only for input pulses much greater than tpd. It's not unreasonable that a minimum amount of pulse energy is needed to 'fire up' the device stages and propagate the full pulse width through to the output.