> I am trying to hook up an I2C A/D converter,
> and the SDA and SCL lines show a 2K resistor
> on their example, but the example is using 2.7 to 3.6 vdc
> supply.
>
> So, this can't be what's needed for a 5 vdc supply, can it?

Get the Definitive I2c document from the Philips web site. It explains
everything in plenty of detail, including how to match 3 & 5V logic.

http://www.semiconductors.philips.com/buses/i2c/support/index.html

and right down the bottom, almost the last link is the I2C specification.

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