Hi Stef!
>i have two questions: First, should it be a problem to use 74HC08/7408
>instead of the original 74LS08? I´ve figured out strange problems with
>using them (specially with IC31).
The HC-Parts have CMOS logic levels...
If you use HCT-parts that have TTL levels you should have luck...
Ciao
Peter
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Kapsch TrafficCom AG Vienna / Austria
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