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SN74HC595A: Circuit and Firmware help

Saurav Das
Prodigy 90 points
Part Number: SN74HC595A

Tool/software:

Hi TI Team,

I am Using Swift Resistor with ESP32 

Can you check the circuit as per our standard.

3 Swift Resistor is connected as Cascade 

Can you help me with Firmware or resistor logic 

1. I want one by one go High ESp32 set to high as per Condition.

Thanks








  • 0
    TI__Mastermind 26290 points

    Hi Saurav,

    For some information on cascading our shift registers, see this app note: Designing with Shift Registers

    Your output enable pin for the middle shift register (U13) is left floating, which means the outputs might not behave as expected.

    Also, from what I can tell, you might be cascading backwards: I assume the order of data is supposed to be U14 -> U12 -> U13, instead of U14 -> U13 -> U12 like you currently have.

    Best,

    Malcolm