Re: 3.3V-5V level ****fters

>The topper is a comment in the TXB spec, "OE should be tied to GND 
>through a pulldown resistor; the minimum value of the resistor is 
>determined by the current-sourcing capability of the driver" That driver 
>is obviously on the chip. Duh! Of course they also forgot what to do if 
>not needed. Pull up? Leave open? Who knows. Well, maybe they had a 
>kegger the night before ...

I expect they mean the driver on the bed of nails tester setup.

It has to overpower the pulldown to turn off the tri-state drivers
in the chip so its other hand can drive the outputs of the chip.

If I didn't need that for testing, I'd use a 0R pulldown.  (I use ones
that don't show up on the BOM.  The board vendor gives them to
me for free.)

-- 
These are my opinions, not necessarily my employer's.  I hate spam.