How To Use A Shift Register (74HC595N)

First episode of my new series "CHIP CHAT" where we take a look at integrated circuits - on how they operate and how to use them.
In this episode we are inspecting the very famous 74HC595 family of ICs which is in heavy use for decades. We will check the simplest way of programming and implementing them in a circuit
[🏷️TAGS ]
#74HC595 #74HC595N #SN74HC595 #SN74HC595N #8bit #8BIT_SHIFT_REGISTER #shift_register #chipchat
[⚠️ DISCLAIMERS ]
If you are following along this video, you are doing it at your own risk. Please always be very careful when experimenting with electricity and using tools and machinery.
[ ⭐CREDITS ]
KiCad
Cursor IMG:
| en.m.wikipedia.org/wiki/File:... | Under Creative Commons Attribution 2.5 Generic License

[@Bravo_L]

this is the best video i have ever seen on this shift register. 100/100 perfection!!!!

[@Gene1954]

I've watched lots of shift register vids but this one made it click, good job.

[@francisstudiosengineering]

I'm glad to hear.

[@iggzistentialism8458]

Love the chip chat! Rarely done in detail whilst keeping it fairly brief, and much appreciated. Newly subscribed in the hope there's more 😉

[@francisstudiosengineering]

Thanks for the nice feedback. I'm glad you enjoyed it. Sure there will be many more episodes of the series. Hopefully I will be able to get my hands on many interesting chips that I can showcase :)

[@havetechshreekrishna6736]

Great Video, please keep on!!!

[@ovalwingnut]

iNtErEsTiNg and well explained. Thank you for bringing us your video. p.s. Your mastery of English is outstanding and on display when you can make 'puns' in a language that's not your first. Impressive! 🎓 Cheers from So.CA.USA 3rd House On the Left

[@francisstudiosengineering]

I'm glad you enjoyed this video. Thanks for the nice feedback!

[@giorgiocanal1659]

That PCB is a good example of the wrong placement and routing of decoupling capacitor.

[@francisstudiosengineering]

Thank you for letting me know. I know that the cap should be as close to the pins as possible, but for easy understanding I routed close to the input power - so people can learn it in blockified patterns. It also helped me learn everything from languages to programming and electronics. But yeah. I admit that I failed to call out the importance of placing it right next to the IC power input.

[@didgeridooblue]

It gets worse, if you attempt to load this shift register at the full clock rate (25 MHz). Without a ground plane you will get flakey operation.

[@2007grapevine]

Keep them videos coming...

[@pcbwayluz]

Great work, carry on!

[@jlucasound]

At the start, you should show how the pins are counted, from the dot around, in case a viewer is new to this and doesn't know. 🤔😁👍 I Love Shift Registers. Thanks for the Video!!

[@mikegLXIVMM]

I like using the TPIC6B595 power shift register. It's based on the 74HC595, but not pin compatible. The output are buffered by MOSFETS, and can drive up 150mA each.

[@francisstudiosengineering]

Thank you for the suggestion. I will try to take a look at that IC. It sounds very exciting 😃 and might be very useful for my future projects

[@Every_thing717]

Great work

[@jozefnovak7750]

Super!

[@factoftechandlogic698]

From india - very good video

[@grahamnichols1416]

Excellent video. Liked and subscribed. What software do you use for your simulation, please?

[@francisstudiosengineering]

No software was used to simulate the circuit. It's just animated. If you are asking which CAD I'm using for the circuit design - it's KiCad.

[@RetroShare2]

You need for each led one resistor. The voltage drop on your one resistor depends on how many of the leds are on.

[@francisstudiosengineering]

Yes and No. You need a resistor for each one of the LEDs if you want to keep their brightness consistent and these sort of jazz. But for a test application like this, one resistor is well enough. You won't even notice the difference in brightness and none of the LEDs are threatened with burning out.

[@mixme8655]

New subscriber sir always watching your videos very interesting ❤

[@francisstudiosengineering]

Thank you! 😄

[@wodowiesel]

nice explanations! so can i only use 3.3V for vcc? datasheet 2-6V

[@francisstudiosengineering]

To be sure, check the datasheet of your exact model, some variations may work on other voltages, but if you have 74HC595 or SN74HC595(N) then yes these can work with 3.3v supply. Edit: sorry I haven't noticed the "only" at first. So you can use it in a range of voltages... 3.3v or 5v and if your model supports 2v - 6v you can choose the voltage that's the most suitable for your circuit from this 2-6v range. But usually 3.3v or 5v is the standard (for compatibility with other ICs and devices)

[@tekaistu5472]

Nice video! Wanted to try this chip as it came along with Arduino, but i did not get too far with example sketch. After watching this i might be able to try use my own inputs. I don't have capacitor, but example sketch seems to be working. Would it be necessary with one SN74HC595N? I use LEDs as output.

[@francisstudiosengineering]

You can go without a capacitor, it should work without, but you might experience some bugs or unexpected behaviour if you drive it too fast.

[@mandyjohn8807]

What software are you using to create the prototype for the wiring

[@francisstudiosengineering]

KiCad - it's an open soruce pcb design cad software. I can recommend it.

[@ArcAiN6]

Never heard of an SN24HC595N IC

[@francisstudiosengineering]

It's quite useful and versatile ^^

[@velho6298]

Not to flame or anything but ... Increasing the traces for data and clocks but not for powers and then the cap.. But I hope this only simulated. Good luck on your learning experience!

[@francisstudiosengineering]

It was done only for visibility purposes - to highlight the important part for the viewers (but I have mentioned this detail in the video)

[@pcbwayluz]

Any chance that we can get in touch?

[@francisstudiosengineering]

How can I help?

[@pcbwayluz]

were wondering if you would need some custom service we provide so we can do some work together@@francisstudiosengineering

[@francisstudiosengineering]

Thank you for reaching out. Currently I have everything I need in terms of PCB design and manufacturing, thank you. (If I'm not mistaken you are on behalf of PCBWay)

[@pcbwayluz]

Glad to know. Keep up the great work.