TS3L4892: TS3L4892

I am meaning Ethernet transformer

Hello Stas,

What signals are you trying to pass through the mux? What is the voltage and frequency? 

If it within the range of its ratings, then you should be fine. 

Unfortunately, we don't have an evaluation board for this device. 

Thanks,

Nir

Hi, Nir

I am trying to mux MDI signals: Ethernet 1000Base-T interface after PHY before transformer node. In data sheet I found the component should support 1000Base-T interface but did not point out if it before transformer, or after transformer, or both

Thank you

Stas 

Hi, Nir

Understood. However, one additional question regarding ground reference. In general, reference for digital signals like SEL is so call "clean" ground (ground before transformer). Signal on analog mux channel are after transformer and refer to so call "dirty" ground.  Do you have isolation inside chip. Or I need provide signals like SEL isolated (let's say use optocoupler)?

Thank you

Stas

Moreover, power rails for the chip also should be isolated.

Thank you

Stas

Sorry for the disturbing you. I found TI lecture https://www.digikey.ca/en/ptm/t/texas-instruments/switches-signal-switch-solutions/tutorial slide 16 where is explained location of the TS3L501E mux. Although this is different mux, after reviewing electrical parameters in 1000BASE-T mode, it looks similar to switch I am planning to use. What do you think about?

Once more, sorry for annoying questions 

Stas

Hello Stats,

No worries, you mentioned you are looking for a device with SEL pins and Power rails isolation. 

What do you mean by power rail isolation? Is it similar to powered off protection? 

For SEL pins isolation, we have Fail-Safe Logic devices. 

If you are looking for a mux that has both features I might be able to recommend one that will suite your application. 

The TS3L501E doesn't have those capabilities, but it does have isolation on the I/Os. Will that be sufficient for you? 

Thanks,

Nir 

Hi, 

May be I was not clear. Please see attached link https://www.digikey.ca/en/ptm/t/texas-instruments/switches-signal-switch-solutions/tutorial.

On slide 16 you can see location of the mux. This is what I am looking for. From my understanding TS3L501E and TS3L4892RHHR are similar. My question is if I can locate TS3L4892RHHR as appear on this presentation. 

Could we appoint short conversation about this subject (around 20 min. or less)?

Thank you

Stas