Part Number: TPD12S016
Hi,
We are thinking of purchasing the board,
Can you please send me DSN and BRD file?
Thanks,
Dan
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Hi Dan,
This EVM is old enough that it is unlikely that I will be able provide the design files.
I do recommend that you read and carefully understand the SCL_B and SCL_A VIL requirements in the spec. They are exceptionally tight an most commercially available MCU's do not meet under all conditions.
Regards,
Chuck
Hi Chuck,
I have 3.3V on the LV side and 5V on the HV side, I see in the DS that the LV side requirement is 1.1-3.6V so it seems OK to me, am I missing something?
Also, I didn't fully understand what you wrote about the design files, there is no scheme and layout for this circuit?
I want to make sure this board is right for my needs before purchasing it so I need the files.
Thanks,
Dan
Dan,
Here is the section of the datasheet that you need to consider carefully:
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Whatever is driving SCL_A and SDA_A needs to be able to pull the signal a level much lower than most microcontrollers can support.
The EVM was created 15 years ago and the reference data has long been archived. The only schematic that I can access quickly is what is included https://www.ti.com/lit/ug/sllu154/sllu154.pdf
Regards,
Chuck
Dan,
We have tried to fixed the issue using an I2C level shifter, but we do not have a really compatible part that works well with current MCUs. The level shifter is not technically a datasheet guaranteed solution. It still shows a gap in performance..
Regards,
Chuck