TXS0108E: Does this can use for Ethernet phy side band signals

Satyaharika Ananthagiri

Part Number: TXS0108E
Other Parts Discussed in Thread: SN74AXC8T245, SN74AXC4T774,

Can I use this translator for Ethernet phy and FPGA for Phy side band signals like ETH_COL,ETH_CRS,RX_ER,TX_ER,RX_CTL_DV,TX_CTL and NRESET.

Please suggest.

over 5 years ago

0 Satyaharika Ananthagiri over 5 years ago

Prodigy 100 points

Please suggest

0 Karan Kotadia over 5 years ago in reply to Satyaharika Ananthagiri

TI__Genius 16735 points

Hi,

I am not sure on your application. What frequency and voltage are you using? Are your signals unidirectional or bidirectionals?

Does this thread help you out?

https://e2e.ti.com/support/logic/f/151/p/858783/3177331?tisearch=e2e-quicksearch&keymatch=TXS%20ethernet%20phy#3177331

Thanks!

-Karan

0 Satyaharika Ananthagiri over 5 years ago in reply to Karan Kotadia

Prodigy 100 points

HI Karan,

Thanks for your response.

The side band signals for PHY I used for translators are unidirectional and only control signals.

No clock signal is there

Voltage is 1.8V fpga to 3.3VPhy

0 Karan Kotadia over 5 years ago in reply to Satyaharika Ananthagiri

TI__Genius 16735 points

Hi,

Then I would also recommend using a device like the SN74AXC8T245 or SN74AXC4T774 since it allows for frequencies up to 100MHz for those voltages.

We have a whole variety of translators available that you can choose for based on your requirements.

http://www.ti.com/logic-circuit/voltage-level-translation/overview.html

Thanks!

-Karan

0 Satyaharika Ananthagiri over 5 years ago in reply to Karan Kotadia

Prodigy 100 points

Hi Karan,

Is there any problem if im using TXS0108E as Im using only for side band signals like reset and failure indication types

0 Karan Kotadia over 5 years ago in reply to Satyaharika Ananthagiri

TI__Genius 16735 points

Hi,

The TXS has no output drive strength and works at lower frequencies than the AXC device. This is why I suggested it. You can use the TXS device as long as you are not trying to do high frequencies and driving a device that requires a large sink or source current. Please also make sure to reduce any transmission line effects as they might cause false direction change triggers on the device. The TXS devices can a bit tricky to use so we always recommend away from using them when we have another part that can perform the function better.

Thanks!

-Karan

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TXS0108E: Does this can use for Ethernet phy side band signals