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Old 10th Jun 2018, 11:53 pm   #67
SiriusHardware
Dekatron
 
Join Date: Aug 2011
Location: Newcastle, Tyne and Wear, UK.
Posts: 11,482
Default Re: MK14 schematic revisions

As you already have some DIP 74LS157s which (I deduce) must not be Nat Semi branded you might want to give those a chance to work - or not work - first.

If you can demonstrate that some other brand of 74LS157 either works or doesn't work then that would be helpful information for anyone following in your wake.

Contact the seller ASAP and explain - I've made the same snap error myself in the past, and as long as the parts are not already in the post the seller is usually happy to amend the order - if they don't have Nat Semi DIP parts to replace them with, they may at least have some other brand which is not the same brand as the DIP parts you already have.
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