On 5/20/2010 3:38 AM, scott wrote:

>
> The HC series can sink and source up to 4 mA on the output pins if you
> want the signals to still be valid (eg for input to further logic
> gates). If you are just using them to drive LEDs then apparently up to
> 20 mA is OK.
>

So long as the voltage doesn't sag below the forward voltage for the LED 
it should be OK. I think at that current it will barely be able to drive 
an LED.

-- 
~Mike

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