This device is an 8-bit serial shift register which shifts data in the direction of QA toward QH when clocked. Parallel-in access is made available by eight. Texas Instruments 74LS Counter Shift Registers are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for Texas Instruments . 74LS 8-bit Parallel In/serial Output Shift Registers. This device an 8-bit serial shift register which shifts data in the direction of QA toward QH when clocked.

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November 19, at 2: Hey zxlee, great article, It helped me a lot. If you need to code for a bigger project, I suggest try simpler example and slowly add in the other parts. Build your own Arduino Uno.

74LS165 Datasheet PDF

After discussing about the input and output pins, let us move on with the control pins. From there, if you able to read the correct input from your buttons, then its just the display code you need to work on. Another thing that you can try is, first make sure you read what is exactly send from the shift register. To find out more, including how to control cookies, see here: J Dacampo November 27, at 9: Last but not least, a video demo showing the operation of 74HC Shift Register.


Another pin that is useful especially when you want to cascade a few shift registers together, which is Serial Data Input DS. However, it is recommended to operate the chip at 5V.

July 31, at 5: January 8, at 8: December 16, at 9: June 11, at In this tutorial, I am going to show another shift register which is capable of expanding input pins. Create a free website or blog at WordPress.

Hi J Dacampo, Thanks. You are commenting using your WordPress.

However, you would need to set the clock enable before clocking out the data. Why have you left out the decoupling capacitors?

Blog Statshits. Besides, you want to stop reading the inputs while serially sending the output.

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If you are using other display, you may need to change to code for the display. January 11, at 9: January 11, xatasheet Leave a Reply Cancel reply Enter your comment here This will stop the circuit being unreliable especially as you chain more chips.

  ISO 8573-5 PDF

Now, let us look into detail how to use the shift register. Dataheet July 31, at 5: Notify me of new comments via email.

Notify me of new posts via email. Hi Maria, sorry for the late reply.

74LS Datasheet(PDF) – Fairchild Semiconductor

Join 1, other followers. In order to ease the process of reading data from shift register, I am using an Arduino built in function which is ShiftIn. December 1, at 8: One of the advantages datasheeet need to be stressed on is that by using only four pins, I can get eight input pins.