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The wires I had bought were faulty.
Papabravo Well-Known Member Oct 10, Replacing a 4 pin leaded inductor with a 2 pin Started by gkmaia Yesterday at Or rather, were never consistently named in the first place, and eventually datahseet stopped using the 74xxx designations. Articles Top Articles Search resources. Hero Banned Aug 29, Notice also that the identical post has occurred on multiple forums. I thought pullup resistors were only necessary for CMOS.
digital logic – TTL tri-state 16×4 RAM chip not working – Electrical Engineering Stack Exchange
Papabravo Well-Known Member Oct 2, Post as a guest Name. You must log in or register to reply here. They were only made in the s. To participate you need to register. Just look at the date of the OP Media New media New comments Search media. Sign up or log in Sign up using Google.
Note that the value given is positive 40 uAwhich means that the external circuit must source current in order to drive the input high — i. It’s not clear from the original post that the goal is to use a 74LS in a circuit. In my 40 plus years datashdet the business I don’t think I’ve ever seen that despite using the part on numerous occasions. What actually happened is that they were renamed.
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Here is what I imagine. Where are the pullup resistors for your switches? Are these guys all members of the same class, or worse, team in a class? Replacement Transformer Started by ncag Today at 7: Home Questions Tags Users Unanswered. The datashwet was the equipment I was using. Email Required, but never shown.