Thanks to all for the responses! The Maxim part will be great once I can
get one! 8 level translators in a really small package. I'll use ideas
from the list for a work around for now.

Thanks!

Harold


> Hi Harold-
> I have mentioned this before, but no one has commented.
> Phillips recommends using mosfets as level shifts for I2C.  The cicuit
> is below:
>           +3V     +3V      +5v
>            |       |        |
>            |      ---       |
>            R   ---------    R
>            |    |  ^  |     |
>            |    |  |  |     |
>   3V line -+----+--+  +-----+--- 5V line
>                |     |
>                +-->|-+
>
> (use fixed width font)
> this presupposes that the two sides are pulled high.  There are three
> cases:
> 1/ when both sides are high, mosfet is off
> 2/ when 3v is pulled low, the mosfet is on, and pulls 5v side low.
> 3/ when 5v is pulled low, the body diode conducts and pulls the 3v side
> low.
>
> Obviously the mosfets can be really small.
> David
>
>
>
>
> Harold Hallikainen wrote:
>
>>Anyone have any favorite 3V to 5V level translators? I've designed the
>>MAX3008EEUP into a circuit and would like to test it before the chips
>> show
>>up in 25 weeks. I'm converting 3 lines from 5V down to 3V and 1 from 3V
>> to
>>5V.
>>
>>THANKS!
>>
>>Harold
>>
>>
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