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TMUX1575: Using MUX1575 for a DUAL SIM/DUAL Modem application

Noam Weidenfeld
Prodigy 30 points
Part Number: TMUX1575

Hi,

I want to use TMUX1575 for a DUAL SIM/DUAL Modem application.

So far I used ONSemi's FXLA2203UMX which have a full flexibility. Unfortunately it become obsolete and I am looking for an alternative.

1. Can TI's TMUX1575 support a dual SIM application.

2. What is the status of the non muxed pins e.g. SxB when signals are muxed to SxA? Can I connect a second modem on SxB when I use SxA?

Thanks

Noam 

  • 0
    TI__Genius 10974 points

    Hi Noam,

    The TMUX1575 should work for this application as long as you need to pass signals no greater than 3.6V (from the capability of the FXLA2203UMX, the TMUX1575 should suffice) and need to switch no more than 4 channels at a time (TMUX1575 is a 4:1 x 2 mux).

    The SxA and SxB channels are isolated from each other and only one set (SxA or SxB) will be connected to the D outputs. The unselected channel will remain in a Hi-Z state and will have minimal impact on the output (I say minimal as there will be some leakage currents that will flow from the unselected channel).

    Thanks!

    Bryan