Hello all,

I am running two distinct logic circuits, one at 5V and one at 3.3V.
The 5V circuitry [PIC demo board] is asserting several control signals
into the 3.3V circuitry [MP3 player logic]. Because a "high" value of
5V is out of spec for the 3.3V parts, I want to use a voltage divider
to deliver approximately 3V of that 5V, and ground the rest. The
circuit to do this would presumably be a 3.3k resistor in series with
a parallel combination of the destination pin and a 2.2k resistor to
ground. (This was suggested to me by member "bob_barr" of the
Microchip forums.)

While this will deliver "highs" about 3V to the 3.3V circuitry (a bit
less due to the high resistance load of the logic circuitry itself),
which is certainly above the "high" threshold, I am concerned with the
2.2k-branched connection to ground. These control signals will be
switching rapidly, and I would expect them to induce a lot of noise
onto our ground plane. With about 10 control signals connecting to
ground, wouldn't this induce a _lot_ of noise? Is there a better way
to do this?

Thanks much,
Julian
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