solarwind wrote:

> The datasheet for the 74HC595 says:
> 
>> Guaranteed shift frequency: DC to 30 MHz
> 
> My microcontroller runs way slower than that so I'll have no problems
> there :) 
> 
> ...Unless I misinterpreted what the datasheet meant by shift
> frequency (is it the maximum frequency I can pulse the clock?)...

That's exactly what it generally would mean. But you always should look
at the detailed specifications. Somewhere there are probably a maximum
clock frequency, minimum clock pulse widths, and other timing data that
helps you find out what's the real maximum that you can use it in your
application.

Gerhard
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