felto

So if I wanted to order the TA75393AP chip where would I get it?

Thanks MP for that info. Where did you find that info I went to embeddedlinks.com (chipdir) and couldnt find anything there. Is there another website that you know about? Thanks again

Does anyone know what this chip is? I am trying to find the schematics of it but cannot find anything on it. It looks like a 555 timer with 8 pins to it. But it doesnt say anything like that. Does anyone know a website or a databook that they may have and can look up the schematics for me. Here is the number TA75393AP Remember it looks exactly like the 555 timer with 8 pins to it. Thanks for your help

Yea thanks can you scan some of those EPE magazines and forward them to my email [email protected] thanks again

Thanks Kevin. Hey Kevin how would you test an 'AND' gate chip with a voltmeter?

Thanks for your help How would you test an OPAMP? for ex. the LM324

So what your saying is just hook up the 5 volts to the chip and I would see a 1 and 0 at the input then with my voltmeter I would see a 1? Where would I hook up the voltmeter? positive to the output and negative lead to ground?

sorry but I dont follow you exactly. I have to remove the chip from the board? or can I just plug the board in and use that source? How do I establish the highs and lows? How do I know when one input is high and the other is low or both? can you tell me exaclty how to wire it up. Thanks for your help. P.S. I prefer not to remove the chip from the board because the board contains many chips and I dont know which one is bad.

Hi all I would like to know how to test the logic gates of an IC chip, for instance a 'NAND' gate or an 'AND' gate in a circuit with my voltmeter. I do not have an oscilloscope but my voltmeter is capable of reading the highs and lows of the logic gates. Where do I need to hook up the leads from the voltmeter? Let us use the 74LS00 IC chip (Quad-input 'NAND' gate) as an example. see the picture attached. Any help can be greatly appreciated.