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TS5A21366: TS5A21366

jayashree
Intellectual 680 points
Part Number: TS5A21366
Other Parts Discussed in Thread: TMUX6136

Hi Team,

In my current design, I am looking for a de-multiplexer which should take both 12V and 3.3V level as input. Is a de-multiplexer available which supports my requirement?

DOUT with 12V / UART_TX with 3.3V any one at a time will be given as input to the IC. Please suggest me a bi-directional IC, 

High level block diagram of my requirement is given for your reference.

With regards,

Jayashree.

  • 0
    TI__Guru 50672 points

    Hi jayashree,

    We have 1 part that is a 2 channel 2:1 that can pass 3V and 12V signals - this is the TMUX6136 when used with at least a power supply voltage of 12V. It can pass the required bandwidth of the signals present, and it has a low on resistance which means less attenuation, especially for the UART signal.

    If you have any other questions please let me know!

    Best,

    Parker Dodson

  • 0 in reply to Parker Dodson
    Intellectual 680 points

    Hi Parker,

    Thanks for the support.

    I am adding little more details for my query.

    I detailed block diagram of my requirement is attached for your reference.

    Suggest me a SPDT switch that can take tolerate voltage ranges from 3V to 12V, and will be able to switch uart signals. To verify DOUT I will be toggling DOUT from 12V to 0v. So, the switch should support DOUT while it is 0V level also.

    Whether the VIH, VIL levels of the switch will affect the functionality?

    A switch like given below will be preferred , because we should consider Vih, Vil levels only for selection or enable pin.

    https://www.ti.com/lit/ds/symlink/ts3a5223.pdf?HQS=dis-dk-null-digikeymode-dsf-pf-null-wwe&ts=1612151027152

    With regards,

    Jayashree.DOUT and UART switch.pptx

  • 0 in reply to jayashree
    Guru 314000 points

    The SEL1/2 inputs of the TMUX6136 are TTL compatible, i.e., they need a high level of at least 2 V. This will work fine with 3.3 V control signals.

  • 0 in reply to Clemens Ladisch
    Intellectual 680 points

    Hi Clemens,

    Thanks for your input.

    As per my understanding the Vih, Vil levels of S1A, S1B, S2A, S2B also to be considered right. Correct me if I am wrong.

    For S1A I will be connecting DOUT_12V signal, this DOUT_12V signal I will be toggling from 0 to 12V, the switch should be able to pass the signal even when DOUT_12V is at 0V level.

    With regards,

    Jayashree.

  • 0 in reply to jayashree
    Guru 314000 points

    The analog I/Os are transmission gates and create a direct electrical connection; there are no threshold voltages.

  • 0 in reply to jayashree
    TI__Guru 50672 points

    Hi Jayashree,

    This is an analog Multiplexer - this means that there are no thresholds and it will pass any signal within the rated range of the datasheet. For the 6136 that is VSS to VDD ; so for a single supply voltage of 12V the switch will be able to pass 0V to 12V. It can still pass digital signals - as it just creates a through path for the signal to travel through. 

    The control circuitry is digital - and these are the control pins which are labled SEL1 and SEL2 are used to select which inputs are active on the device. 

    Best,

    Parker Dodson