Introduction - Digital electronics basics: 7400 logic chips [part 1]

[@DoctorVolt]

Thank you for the clear and concise explanation. I never thought that there are such big differences between LS, HCT etc.

[@christophermonhollen1785]

Finally, I can learn digital electronics.

[@SladorSoft]

I'm really glad you've found this useful!

[@hadibq]

the fundamentals when they are clear in mind make definitely the difference when mastering the subject. thanks for the clear explainations.

[@q12x]

very good !

[@billelguechi5831]

liked and subscribed directly without thinking, waiting for more ciruit design using: MUX, CLK etc...

[@SladorSoft]

Thank you very much. Yes there will be much more, MUXes, latches, counters, shift registers etc.

[@markgreco1962]

Thanks

[@danman32]

1. What became of the 8088 series? 2. For the different 74 series families, might also want to go over the output current limits. Some of them you can get away without using a current limiting resistor when connecting an LED as a quick and dirty logic status indicator, though that can mess with it being read by the next input. 3. Go over the C families that are not TTL levels.

[@shubhamdaule4239]

I think that 8088 will be continued after covering basic logic gates.

[@SladorSoft]

I'm currently in the process of making the next video of 8088 series - don't worry. Both series will go on in parallel. Yes, you're right that I could go over current limits. I could also say more about propagation time and others. I simply didn't want to overwhelm people who haven't done much of digital electronics and discourage them from playing with it. Sometimes too much information may stop you from trying. Nonetheless - I take your comment and I will mention the current limits when talking about 7447 - that should be a good place to talk about that. Thanks for it. Currently I don't have plans to cover those "74C" chips (or the 4000 CMOS logic). It wouldn't add much - a NAND gate is still a NAND gate ;-) I mentioned multiple 74 families mainly to avoid confusion of the beginners. The main message for them was really only: "if in doubt, use the HC(T) chips".

[@SladorSoft]

As I mentioned to Daniel, both series will be appearing in parallel. I'm currently planning the 7400 series to be around 16 episodes - that would be too long to wait before the next 8088 video :-)

[@Stopinvadingmyhardware]

@@SladorSoft you need a channel of donations.

[@sammiemagi6564]

Amazing

[@perseverance8]

From tests I’ve done F series is a bit faster than S series though AS (Advanced Schottky) is a little faster, FCT (Fast CMOS TTL) is lower power while having both TTL inputs & outputs. ACT seems to be the best of both worlds being TTL input tolerant while providing CMOS level outputs, additionally ACT has quite fast edges for 5v TTL tolerant CMOS similar & often better than F & AS series with MUCH lower power consumption. CMOS consumes more power when switching while BIPOLAR sucks power while static (Quiescent Current) or if it’s active.

[@SladorSoft]

This video was meant to be a very brief introduction and contained as little details as possible. Thank you @perseverance8 for this comment as it perfectly complements this video.

[@edosupra14]

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