[time-nuts] 50 ohm Driver

Hal Murray hmurray at megapathdsl.net
Wed Mar 4 15:03:16 EST 2015

jra at febo.com said:
> Per Tom Clark, who came up with the idea, they are *not* intended to
> provide a near-end line termination to 50 ohms, but are simply there to
> protect the paralleled devices if the gates have slightly different  delays
> (in which case one gate could end up sinking the other two). 

Is that a real problem?  How far off can the prop delay be for 2 gates on the 
same chip?

I seem to remember reading something saying it was OK to just wire them up in 
parallel.  It could have been an app note, or it could have been a rumor on 

These are my opinions.  I hate spam.

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