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If both outputs are 1 5V wouldn’t they combined still be 5V? It is not clear under what conditions you want to enable the Micro-Kim expansion port.
Email Required, but never shown. Thanks for the correction. I have made one – just know that I am a total noob regarding electronics – you’ll probably laugh at my attempt: Thanks so much for the answer.
Basically if one of them wants to be high and the other wants to be low, they will compete and force limiting currents through each other, very likely damaging them, because you cannot guarantee in any case that they will go high or low at the same time, since then you’d have to tie both inputs together as well.
So there won’t be a conflict if one output of the is high and the other is low.
7404 – 7404 Hex Inverter Datasheet
Sign up or log in Sign up using Google. Will that fry the N?
Following is the schematic from TI’s data sheet so you can see what’s going on in there, and what logic function do you want to implement? Sign up using Email and Password. I want to use the N together with a 74LS to do memory address decoding.
And thank you for teaching me how to ask questions here: That is, if one is high and the other is low. What you are doing with the two outputs is not okay.
The comment was really more for the OP’s benefit to help him work out his logic. Since the 74LS has active low outputs, the Y0 and Y7 outputs will never both be low at the same time. Tying the two outputs together in this fashion is called a ” wired-or ” or ” wired-and dataeheet depending on the polarity of the signals the latter in this case, because the outputs of the ‘ are active low.
Will switch to use the ‘ Sounds like what I need. You should include a truth table.
74LS04 NOT Gate IC | IC Datasheet
I’m not doubting your answer – I just don’t understand why: Sign up using Facebook. Can you explain to me why it won’t work? I didn’t know about that concept and will read up on it. Post as a guest Name.
Icy 2, 5 You can use a instead of the You can’t wire two outputs together eatasheet that. The has open-collector outputs. You are aware that the 74LS’s outputs are active-low aren’t you? Or, datasgeet yet, can you complete this truth table?: You should combine them with some sort of logic function eg ‘Or”And’ or similar.
N. Datasheet, PDF – Alldatasheet
Is there a free web service where I can make that easily? Datashert don’t think it’ll fry anything, but since s aren’t open-collector gates, if you connect two outputs together and they’re not both high or low at the same time, the output logic level will be undefined and can’t be guaranteed to be either a 1 or a zero.
I’m thinking that I can just use a ? Home Questions Datasheet Users Unanswered. Woah – that’s neat! I will connect two Yx pins to two two separate input pins on the N. Thanks for mentioning open-collector. I’m a noob here. Is it OK for the output pins to be high?