TCA9548A - 1.8V(Master) to 3.3V(Slave) translation

Kawai

Guru 19785 points

Hi Team,

Please allow me to confirm if there is no problem using in the following condition. I believe it is OK.

Best Regards,

Kawai

over 9 years ago

0 Siby James over 9 years ago

TI__Expert 5140 points

Hi Takushi-san,

Something to keep in mind with the Supply voltages of the I2C switches is that you will want to make sure that your VCC matches the LOWEST voltage of your VDPUx (whichever that may be). This will prevent unnecessary power loss through leakage current.

Thanks,
Siby

0 Kawai over 9 years ago in reply to Siby James

Guru 19785 points

Hello Siby-san,

Thank you for your reply.

I understood that above schematic does not have any problem.
VCC is also matching with the lowest voltage, which is 1.2V.

Best Regards,
Takushi

0 Siby James over 9 years ago in reply to Kawai

TI__Expert 5140 points

Takushi-san,

Please take a look at the Recommended Operating Conditions table from the datasheet. Please fall within the spec for VCC for optimal operation:

Thanks,

Siby

0 Kawai over 9 years ago in reply to Siby James

Guru 19785 points

Hi Siby-san,

Sorry, it was my typo. VCC is 1.8V as shown in the schematic.

Thank you for your support.

Best Regards,
Kawai

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TCA9548A - 1.8V(Master) to 3.3V(Slave) translation