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Part Number: TCA9406
For a new design I using TI TCA9406 I2C Level Shifter – to translate from 1.8V to 3.3V voltage levels.
Up to now I have used TI PCA9306, but since the new design needs to support 800KHz mode, I changed to TCA9406
However I facing difficulties with the new part, mainly signal integrity issues.
For the same PCB and same I2C master and slave the ne part does not work – and the old one does (at 100KHz/400KHz).
I ask for your advice on how to remedy this issue.
In reply to Shlomi Yehezkia:
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In reply to TRX Bobby:
Did you consider using the TCA9617B, this is a buffered translator but is designed for Fast Mode Plus (1MHz)? This gives you the ability to not have a Rise Time Accelerator and yet still have the strength need to work at faster speeds using stronger pull up resistors.
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