TXS0108E-Q1: current consumption estimation

Ann_Lien

Genius 16330 points

Part Number: TXS0108E-Q1

Hello expert,

May I know how to estimate the maximum current for TXS0108E-Q1? Is it only 8uA for maximum? Thanks a lot!

Best regards,

Ann Lien

7 months ago

0 Ann_Lien 7 months ago

TI__Genius 16330 points

The application is 3.3v from device to 1.8v from SoC. maximum bandwidth is 74Mbps and use all 8-ch. Thanks a lot!

0 Jack Guan 7 months ago in reply to Ann_Lien

TI__Guru 60151 points

Hi Ann,

The switching current will be higher than the quiescent current that you have provided the screenshot of, however it can be calculated through this excel sheet provided in this FAQ: [FAQ] How do I Calculate Power Consumption or Current Consumption for my CMOS Logic Device?

Regards,

Jack

0 Ann_Lien 7 months ago in reply to Jack Guan

TI__Genius 16330 points

Hello Jack,

Thanks for your reply! It seems like we can calculate total power from level shifter. But customer needs to know 3.3V and 1.8V current consumption separately Is that possible to provide those information based on below requirement in excel? Thanks a lot!

Customer's requirement : The application is 3.3v from device to 1.8v from SoC. maximum bandwidth is 74Mbps and use all 8-ch.

Best regards,

Ann Lien

0 Jack Guan 7 months ago in reply to Ann_Lien

TI__Guru 60151 points

Hi Ann,

Yes- that would be taken account under the dynamic power consumption:

Please note that this device would be rated up to 70Mbps at the 1.8V to 3.3V translation node:

Regards,

Jack

0 Ann_Lien 7 months ago in reply to Jack Guan

TI__Genius 16330 points

Hello Jack,

Based on the excel, we don't see the separated current consumption from VCCA and VCCB for 3.3V and 1.8V. Does that mean we cannot separate the current from VCCA and VCCB? Thanks a lot!

Best regards,

Ann Lien

0 Clemens Ladisch 7 months ago in reply to Ann_Lien

Guru 325980 points

The Excel sheet assumes a single device with a single supply. Pretend that the shifter is two devices, and use two copies of the sheet.

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TXS0108E-Q1: current consumption estimation