(Topic ID: 217499)

74LS139 getting cooked. Thoughts as to why?


By pb456

1 year ago



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#6 1 year ago

pull chip back out of socket and measure all voltages on each pin of that socket - make sure nothing is over 5v and ground really is ground and nothing is shorted to pin next to pin measured

possible defective chip? an internal short will cause a chip to get amazingly hot with just 5v applied

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