TUSB8044: Electrical Characteristics

Anderson2

Expert 1035 points

Part Number: TUSB8044

Dear TI engineer

I want to know the minimun of "HIGH level input voltage" and the Maximum of "LOW level input voltage".

Would you tell me about following input Pin?

1. USB_VBUS

Best Regards

over 6 years ago

0 Malik Barton57 over 6 years ago

TI__Guru 64326 points

Nakano,

USB_Vbus is not a Low/High logic pin but uses a internal comparator to monitor Vbus. The minimum voltage at this pin to sustain normal operation is ~440 mV.

0 Anderson2 over 6 years ago in reply to Malik Barton57

Expert 1035 points

Dear Malik

Thank you for your answer.
Dose it mean if USB_VBUS is above 440mV, TPS8044 detect Upstream?

0 Malik Barton57 over 6 years ago in reply to Anderson2

TI__Guru 64326 points

Nakano,

Yes when USB_Vbus is above ~440mV, TUSB8044 sees valid Vbus for the Upstream port power.

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TUSB8044: Electrical Characteristics