DS90LV804: Tri-state mode

Kuramochi Tadahiko

Guru 28715 points

Part Number: DS90LV804

Hi,

Following is extract of the datasheet.

Does "tri-stated" mean high impedance state?

Best Regards,

Kuramochi

over 6 years ago

0 Lee Sledjeski over 6 years ago

TI__Mastermind 43795 points

Hi Kuramochi,

Yes, tri-stated does mean High-Z.

The saying goes back to logic buffers. The buffer output could have 3 different output states Low, High, or High-Z. High-Z is the third state, tri-state is just a short version. I have also seen the term 3-state used.

Regards,

Lee

0 Kuramochi Tadahiko over 6 years ago in reply to Lee Sledjeski

Guru 28715 points

Hi Lee-san,

Thank you for your help.

I undertstood.

Though you tell that "The outputs of these devices are not high impedance." on the below thread, is it wrong?

https://e2e.ti.com/support/interface/f/138/p/747045/2759316?tisearch=e2e-sitesearch&keymatch=DS90LV804%E3%80%80disable#2759316

Best regards,

Kuramochi

0 Lee Sledjeski over 6 years ago in reply to Kuramochi Tadahiko

TI__Mastermind 43795 points

Hi Kuramochi-san,

The outputs do have a high impedance to GND or VDD. However, there will still be a 100 Ohm differential impedance between OUT+ and OUT- when this part is in Tri-State.

Regards,

Lee

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DS90LV804: Tri-state mode