TMUXHS4212: Does TMUXHS4212 support reverse polarity of Port Select Control logic

Lumina Gui

Part Number: TMUXHS4212

Tool/software:

Dear TI Engineer,

We have a quesiton about the logic of polarity of Port Select Control, that is, when the SEL=L, port A channel is connected to port C channle, and when SEL=H, port A channel is connected to channle B. Did TMUXHS4212 support it?

Thanks,

Kind Regards

5 months ago

0 Rami Mooti1 5 months ago

TI__Mastermind 35628 points

Hi Lumina,

Can you help me understand and confirm the question better?
I'm understanding this as you're saying that the TMUXHS4212 polarity that you're seeing in real life is backwards than what you're expecting based on the logic table (Table 8-1) in the datasheet. Is that correct?
Thanks,
Rami

0 Lumina Gui 5 months ago in reply to Rami Mooti1

Genius 3690 points

Hi Rami,

We want to implement the backwards logic of TMUXHS4212 polarity which shows on the logic table (Table 8-1) in the datasheet. As it shows on my question table.

Thanks,
Kind Regards

0 Rami Mooti1 5 months ago in reply to Lumina Gui

TI__Mastermind 35628 points

Hi Lumina,

Understood. Unfortunately we don't have an opposite polarity TMUXHS4212. Best solution would probably be to put an inverter before the TMUXHS control pins.

Thanks,
Rami

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TMUXHS4212: Does TMUXHS4212 support reverse polarity of Port Select Control logic