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TMUX1219-Q1: TMUX1219-Q1

Tirthal Patel
Prodigy 50 points
Part Number: TMUX1219-Q1

Tool/software:

Hello Team,

In our project there is requirement to switch the Digital Protocol signals, for which we require BUS/Analog Switch.

Below are the list of protocols we are going to use : 

1.Ethernet (RGMI),100 MBPS

2.CAN-FD

3.L/K - Line

Currently we are using Relay (AGN210S4HZ) for switching purpose for CAN-FD and L/K-Line Protocol.

So please suggest some IC with SPDT type configuration 1:2.

Also we are using for automotive application so we require AEC qualified.

Regards,

Tirthal Patel

  • 0
    TI__Genius 17040 points

    Hello Tirthal,

    The TMUX1219-Q1 should be fine in this application as long as the

    1.supply voltage of this device is 1.08 to 5.5V

    2.The signals passed through the switch are 0V to VDD

    3.The frequency of the signals passed through the device are below 250Mhz.

    So would you be able to tell me what is the actual voltage and frequency of the signals passed through the TMUX1219-Q1?

    Here is a good FAQ to understand how the signal frequency of different protocols matter when selecting a mux based of bandwidth

    In addition our team has some information on relays vs multiplexers 

    Are there any features that the current relay has that the customer cares about and wants out of multiplexer?

    If not then we don't have to worry about that.

    Please let me know what you think and we can continue to look into this

    Regards,

    Kameron

  • 0 in reply to Kameron Hill
    Prodigy 50 points

    Hey Kameron,

    1.supply voltage of this device is 1.08 to 5.5V .

    Reply : Yes Correct, Supply range will be 3.3/5V.

    2.The signals passed through the switch are 0V to VDD

    Reply : Ethernet : Voltage swing is 2.5V

                 CAN-FD : Voltage swing is 5V

                 K/L-Line : Voltage swing is till VBAT (32V Max)

                                  So for the K/L line this IC will not work.

    3.The frequency of the signals passed through the device are below 250Mhz.

    Reply : Ethernet : 100 MBPS

                 CAN-FD : 5 MBPS

                 K/L-Line : 10,400 Baud rate

    I think the only reason to take the relay would be the high voltage support for K/L-Line protocol.

    Based on my understanding Data rate is under 250MHZ.

    Regards,

    Tirthal Patel

  • 0 in reply to Tirthal Patel
    TI__Genius 17040 points

    Hi Tirthal,

    Today is a Ti holiday but I will look at this tomorrow and give some feedback 

    Regards,

    Kameron

  • 0 in reply to Kameron Hill
    TI__Genius 17040 points

    Hi Tirthal,

    Thanks for the extra info,

    After looking into this some more the clock frequency of  RGMI is a 50 MHz square wave signal

    50Mhz x 2bits per cycle= 100MBps

    1.So the device meets our teams square wave selection suggestions in this application because its 250MHz bandwidth is 5x higher than the 50Mhz frequency.

    2.In addition can you tell me if the K/L lines 32V max voltage is a fault condition meaning it is not intended but does happen or is the relay usually used to pass a 32V signal with only a 3.3V or 5V supply?

    Regards,

    kameron