Tool/software:
Hello,
Can the SDA/SCL pins of the TUSB320LAI be pulled up to VDD if VDD = 5V? The Abs Max Ratings shows SDA & SCL have the same ratings as the other IO pins (PORT, ADRR, ID, EN_N, INT_N/OUT3). However, in the Electrical Characteristics it shows the VDD_I2C supply range as 1.65 - 3.6 V. From a logic level perspective, it seems fine. However, I want to confirm it will not lead to any reliability issues.
We are powering the TUSB320LAI with VDD=5V and our I2C pullup voltage is 1.8V. However, the 1.8V will come up before the 5V rail due to our system's power architecture. Therefore, we plan to pull up the I2C bus on the TUSB320LAI side to VDD and use a level shifter to shift down to 1.8V to avoid backpowering the device. Can you please confirm this will not cause any issues on the TUSB320LAI side?
Thanks!