Hello~
As you know very well, /PD pin of DS90CR481 & DS90CR482 has internal pull-down resistor.
I'd like to know the internal pull-down resistor value of /PD pin in DS90CR481 & DS90CR482.
Thanks... C.W. :)
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Hi C.W.,
Since this Channel Link I Ser/Des set is quite old, I am unable to find any references as to the exact value of the internal pull-down resistor. I would estimate that the pull-down value is in the range of a few kOhms in order to ensure that current at the pin is minimized if a 5V TTL level input is asserted.
Thanks,
Michael
The pull downs on these parts are usually very weak active circuits, typically on the order of 20uA.
Mike Wolfe
DPS APPS / SVA