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I have some old pcb, it use 74LS645 as buffer. I check datasheet and can not find any differenence between 74ls645 and 74ls245, but if I replace 74LS645 by 74ls245 my pcb doesn't work correctly !
Anyone can tell me what is the differences between 2 buffer?
They are the same part. The LS245 is tested to tighter AC specs. You should not see adifference in them
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In reply to Chris Cockrill:
Thank you for your quick reply.
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