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

Introduction to digital electronics in a tutorial style series of videos aimed mostly at beginners.
In this first video of the series I'm talking about different families of the TTL 7400 integrated circuits and the differences between them.

Visit my homepage to find out more about this series:

[DoctorVolt]

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

[christophermonhollen]

Finally, I can learn digital electronics.

[hadibq]

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

[danman]

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.

[billelguechi]

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

[perseverance]

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.