This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

SN74LV595A: how many can be used "THIS 595 IC" without additional buffers or helps?

Part Number: SN74LV595A

I used SN74LV595A in Our Company product.

But I wonder how to calculate how many can be used.

When using the MCU to control RCLK and SRCLK pins, how many can be used without additional buffers or helps?

  • Each additional chip increases the capacitive load on the line (see the Ci specification). This can slow down switching; how much depends on the drive strength of the MCU.

    To find out how far you can go, put a 100 pF capacitor on the line and check the waveform with an oscilloscope.