Hi,
Does TXS0104E support the partial power-down mode although it isn't mentioned in the TXS0104E data sheet ?
Best regards,
Kato
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Hi Nirav-san
Thank you for your quick response.
I understood and will suggest TXB0104 instead of TXS0104E to our customer.
Best regards,
Kato
Sadanori,
If you can post information on the customer application, I can make sure that the TXB0104 is the proper choice. For example, what type of signals are they trying to translate (e.g. SPI, UART, etc)?
Best Regards,
Nirav
Hi Nirav-san,
Our customer will try to use TXS0104E with I2C or SPI interface.
By the way, according to the data sheet of TXS0101 and TXS0102 these parts support the partial power-down mode.
In addition, it seems that TXS0104E supports it in the following application report.
So, could you please double check it ?
http://www.ti.com/lit/an/scea044/scea044.pdf
Best regards,
Kato
Kato - My feedback is below:
Sadanori Kato said:Our customer will try to use TXS0104E with I2C or SPI interface.
Understood. In that case, the TXS family of translators is a suitable choice, since it is auto-directional, and can support open-drain (I2C) as well as push-pull (SPI) interfaces. The TXB family of translators can support push-pull, but not open-drain interfaces.
Sadanori Kato said:
I am sure that the TXS0104E does not support Ioff. I went through the design database to make sure.
Also, shown below is a portion of the application note that you mentioned. It states that Ioff is supported in TXS devices that do not have IEC level ESD protection. The TXS0104E does have IEC level ESD protection, so therefore it does not support Ioff.
From the application note (SCEA044):
From the TXS0104E datasheet:
Best Regards,
Nirav
Hi Nirav-san,
Thank you for your commnet.
I understood and will inform our customer of this information.
Best regards,
Kato
In the future, you can use this post to determine if a Level Translator supports Partial Power Down Mode.
Check the Electrical Characteristics section of the datasheet for the parameter 'Ioff'. If it exists, then the device supports Partial Power Down Mode.
For example, shown below is a portion of the TXS0101 datasheet. Since it lists 'Ioff', it therefore supports Partial Power Down Mode:
Now look at the TXS0104E datasheet, notice that there is no 'Ioff'. This means that Partial Power Down Mode is not supported.
Hope this helps you out in the future. Thanks.
Best Regards,
Nirav
Hi Nirav-san,
Thank you for your strong support.
I have also found the presence or absence of Ioff characteristics which you mentioned.
By the way, could you please give me your advice about the following post ?
http://e2e.ti.com/support/interface/voltage_level/f/391/t/536729
Best regards,
Kato