TUSB9261-Q1: About maximum ratings

user5861762

Part Number: TUSB9261-Q1
Other Parts Discussed in Thread: TUSB9261

Hi Team,

I have a question about maximum ratings.

The maximum rated voltage of USB2.0 DP/DM terminal is -0.3V to 3.8V.

Is this independent of the power supply voltage level of the TUSB9261?

For example, will the maximum rating of DP/DM terminal be -0.3V to 3.8V even when VDD33/VDDA33/VDD is off (0V) ?

Best regards,

0 Brian Zhou over 5 years ago

np, should with VDD on

0 user5861762 over 5 years ago in reply to Brian Zhou

I have additional questions.

I am looking forward to your response.

Q1: What is the maximum rated voltage for the USB2.0 DP / DM pin when VDD33 is off?

The DP/DM pin is 3.3V tolerant, and the maximum rated voltage is -0.3V to 3.8V when VDD33 is on or off?

Q2: If it is not 3.3V tolerant, does the maximum rating of 3.8V mean VDD33+0.5V?

Q3: Please tell me the internal equivalent circuit of the DP / DM terminal.

0 Brian Zhou over 5 years ago in reply to user5861762

when VDD33 is off, voltage on Dp/DM may back drive the device.

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