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?
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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.