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TMUX1574: Daisy-chaining

Dakota Koelling
Prodigy 10 points
Part Number: TMUX1574

I would like to know if there are any limitations when connecting 2 or more of the TMUX1574 in a daisy-chain configuration.

Specifically, my design will connect:

1) Processor to TMUX #1's D1 pin
2) TMUX #1's S1A pin to TMUX #2's S1A pin
3) TMUX #2's D1 pin to SPI flash

  • 0
    TI__Mastermind 45575 points
    Dakota,

    The only issue you have cascading any signal switch is the parasitic impedance, leakage, insertion loss, etc will need to be accounted for twice.

    Since the TMUX1574 device has such high bandwidth of 1.5GHz compared to a 50MHz SPI signal you shouldn't see much affect cascading these two devices.

    Thank you,
    Adam