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TMUX6136: TMUX6136

jayashree
Intellectual 680 points
Part Number: TMUX6136

Dear Team,

I am using TMUX6136PWR in my design for switching between (DOUT & UART_TX) and (DIN & UART_RX). 

I had attached the schematic snapshot for your reference, go through it and let me know your feed back.

With regards,

Jayashree.

  • 0
    TI__Genius 10974 points

    Hi Jayashree,

    Appreciate the schematic. Think most things look good, but wanted to make sure you are using the correct input voltages for your application.

    The TMUX6136 is a dual supply (min +/-5V) or single supply (min 10V) part. Your schematic does not specify what your VCC voltage is, so wanted to make sure you are intending to put between 10V and 16.5V on the VCC pin as you are using it in single supply mode (VSS=GND). In addition, your input to the SEL1/SEL2 pin will be around 2.2V given your voltage divider circuit. While this is fine as the VIH for the SEL pins is minimum 2V, just make sure you are aware of your logic level and the operation of the SEL pins on this device.

    Let me know if you have any other questions!

    Thanks,

    Bryan

  • 0 in reply to Bryan Marshall
    Intellectual 680 points

    Hi Bryan,

    Thanks for your inputs.

    My VCC supply voltage is 12V.

    I just want to confirm if SEL1 and SEL2 operation is independent of each other, because I want SEL1 to be as input and S1A and S1B as output. SEL2 will be as output and S2A and S2B as input. 

    Is is possible to work in the above scenario? As per datasheet this IC is a bidirectional IC. 

    With regards,

    Jayashree.

  • 0 in reply to jayashree
    TI__Genius 10974 points

    Hi Jayashree,

    Both SEL1 and SEL2 operate independently. You can toggle each control input independently as long as you have enough control signals to manipulate them like that (in this case you will need another signal to control both individually).

    The switch is bidirectional, so the D pins can be configured as an input or output and the S pins can be configured as inputs or outputs as well.

    Thanks!
    Bryan

  • 0 in reply to Bryan Marshall
    Intellectual 680 points

    Hi Bryan,

    Thanks for the input.

    in this case you will need another signal to control both individually : SEL2_EN signal one control signal should be able to control right.

     

    *When  SEL2_EN signal is high then SEL1 will be connected to S1A and S2A will be connected to SEL2

    * When SEL2_EN signal is low then SEL1 will be connected to S1B and S2B will be conencted to SEL2

    Ultimately one SEL2_EN signal will be sufficient right.

    With regards,

    Jayashree.

  • 0 in reply to jayashree
    TI__Genius 10974 points

    Hi Jayashree,

    Correct, with the way you are using it, only the SEL2_EN control signal is needed to operate the switch in which you describe.

    Thanks!

    Bryan