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TS5A3359: TS5A3359DCUR

Ali Khan
Expert 1150 points
Part Number: TS5A3359
Other Parts Discussed in Thread: SN74LVC1G332

Tool/software:

Hi,

I have three MCU and I need to control a single LED using three MCU.
For example,
if MCU A send a signal then using a push button and program, i want to connect LED with MCU A and so on.

Is this the right choice?
TS5A3359DCUR

I am also open to a solution that can take digital logic signal from 3 MCU and glow the LED automatically without any firmware or push button to choose like a switch.
All the MCU have same logic signal(High, LOW) so nothing complicated.
Something like that can work but not sure about it.

  • 0
    Guru 317370 points

    What should happen when two MCUs send the signal?

    If the LED should light up when at least one MCU sends a signal, then you can use an OR gate as shown in your schematic, e.g., SN74LVC1G332.

  • 0 in reply to Clemens Ladisch
    Expert 1150 points

    There is a pushbutton that is connected with all three separate MCU. When it press then all MCU send logic high signal to glow LED.

    The main goal is to glow led when push a button irrespective to MCU.

    It can be all three MCU signal or single one.

    Thanks 

  • 0 in reply to Ali Khan
    Expert 1150 points

    Previously i connected all MCU pins with LED but it cause problem. Now i am not sure either it is some kind of delay shows up or what so i decided to isolate all mcu pins with each other but when any will send a logic high signal then led should glow.

    One more thing, all MCU are also performing some other tasks that are might different in different stages but LED glow is at the same time in the code i e. Upon receiving push button press

  • 0 in reply to Ali Khan
    Guru 317370 points

    You must not connect MCU outputs together when they could have different values at the same time.

    The OR gate will work.