[DS90CR481, DS90CR482] Internal pull-down resistor value of /PD pin

Chang-woo YANG

Expert 1285 points

Other Parts Discussed in Thread: DS90CR482, DS90CR481

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. :)

over 12 years ago

0 Michael Lu (Santa Clara) over 12 years ago

TI__Mastermind 29655 points

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

0 Mike Wolfe over 12 years ago in reply to Michael Lu (Santa Clara)

TI__Expert 3050 points

The pull downs on these parts are usually very weak active circuits, typically on the order of 20uA.

Mike Wolfe

DPS APPS / SVA

Interface

Interface forum

[DS90CR481, DS90CR482] Internal pull-down resistor value of /PD pin