Questions tagged [74hc595]

Question 1

I built a circuit using an ESP32 Super Mini connected to a 74HC595 shift register. Its outputs Q1–Q4 are wired to the inputs of an SN74141 in the following order: A ← Q1, D ← Q2, B ← Q3, C ← Q4. The ...

Question 2

I'm using the SPI peripheral of an MCU to send out serial bits to 16 daisy-chained shift register chips (74HC595). All these 595s are laid out with approximately equal spaces in between, and the ...

Question 3

IC devices with clock inputs require that the input signal have a rise time quick enough that the device recognizes it as only a single transition. The clock signal should avoid remaining in the 0-to-...

Question 4

I understand that "drive output" on this datasheet means that it's the maximum current the IC can source/sink - i.e. if there is something pulling one of its outputs high at a current higher ...

Question 5

I am working with an 8x6 RGB LED matrix with common cathode LEDs on a PCB. I can select one column at a time by grounding its common cathode, and I source the current through the rows. The whole setup ...

Question 6

I'm trying to make a Nixie clock based on an ESP32. I've made a working prototype on a breadboard. Only the 74HC595 part, which is where the problem is at: I then made a PCB: After soldering ...

Question 7

I'm migrating a code made in Bascom from a fully functional hardware to a C language (XC8) Through two 74HC595. They increase to 16 digital outputs. The way they do it is like this I have made my ...

Question 8

I am currently working on a project where I am utilizing SN74HC595N shift registers to drive multiple LEDs. According to the datasheet, the maximum output per pin is specified as 35 mA, with a maximum ...

Question 9

I have a synth device using 2-digit 14-segment display, a Mutable Yarns Clone. The PCB design is here. It uses an STM32F103CBT6. I flashed it via JTAG without any issues. the display is driven by a ...

Question 10

I am using a 74HC595 shift register IC connected to my Arduino board as described in this tutorial to drive 8 RGB LEDs. The code is given below and is similar to the one in the tutorial: ...

Question 11

I've build a daisy chain of 3 x 74HC595 shift registers with LEDs on their outputs. They are fed by an Arduino that is pushing a single bit through all the registers and will finally clear the ...

Question 12

I am making a clock with Nixie tubes IN-12 A and made a circuit. I would like to know if it is correct before making the PCB and 3D case.

Question 13

I've bought some 74HC595 in SOP-16 without directly looking at their datasheet and now that I have looked at it for my project I saw that it is marked that the OE and MR pin are not connected. I ...

Question 14

I am trying to assemble a 7 x 10 LED single-color matrix using 2 74HC595's for the 10 columns and a CD4017 for the 7 rows. Now obviously I am only going to use a total of 10 pins of the 74HC595 ...

Question 15

When I connect my Arduino with this 74HC595 shift register circuit, all the shift register's outputs go high, and any code I run doesn't seem to change this. Regardless of what I run, all outputs are ...

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Questions tagged [74hc595]

74SN74141 lights all Nixie digits at once

SPI track length for daisy-chained 74HC595s

What is "induced grounding", mentioned on 74HC595 and other datasheets?

74HC595 drive strength

Driving a LED matrix with TPIC6B595 as sink and UDN2981A as current source

74HC595 behaves randomly, need help with my circuit

Problem using two 74HC595 to create a 16-bit output

Concerns about Exceeding Current Rating on SN74HC595N to drive LEDs

Digits on 14 segment display are mirrored one to another

74HC595 used with Arduino gives high value only on first pin

Shift register outputting data on two pins, although only one bit is set

Is my circuit correct (Nixie Tube Clock)?

74hc595 with not connected pin

LED matrix 7x10

74HC595 shift register outputting data when it shouldn't

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