Here you go:  http://www-s.ti.com/cgi-bin/sc/family3.cgi?family=INVERTERS

Byron A Jeff wrote:

> On Thu, Apr 22, 2004 at 05:14:50PM +0100, Michael Rigby-Jones wrote:
>
>>Even easier is to drive one side of the LED and a CMOS inverter input with
>>the PIC pin, and the other side of the LED with the inverter output.  The
>>above solution may be ok, but you are limiting your forward voltage to
>>2.5volts for a 5v supply rail which may be marginal for some LED's
>>
>>              |\
>>---+    +-----+ |0-------------+
>>   |    |     |/               |
>>   |    |                      |
>>   |----+----+-|>|-+---/\/\/---+
>>   |         |     |
>>   |         +-|<|-+
>>PIC|          LED
>>   |
>>---+
>>
>>
>>Regards
>>
>>Mike
>
>
> The only problem I see is packaging. You can get opamps two in a 8 pin package
> no problem. Not sure about inverters.
>
> BAJ
>
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http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.