[IBIS] Re: R-Load

> I had this query as to why we need to model the buffers with R-load
> as in most of the cases it is c-load w/without TL line is
> driven by the buffer).
>
> does it reflect on the TL impedence that it drives? (50ohm environment)

I think you hit the nail right on the head.

If the buffer drives a transmission line that is 3 ns long, the device sees
an effective load of Zo (typically in the vicinity of 50-80 ohms) for the
first 6 ns after it switches.

Regards,
Andy


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