What is the D + and D- Voltage range of USB

[helen]

Hi   

       Is VDPDM the voltage range of D + and D -?If it is, the voltage range of D + and D - is  - 0.3V to 3.9v.Is my understanding correct?

[Håkon Alseth]

Hi,

 

The voltage range of the D+/D- is following the VUSB33 voltage, with an addition of +/- 0.3V (depending on high or low level).

If VUSB33 is 3.3V, that means the highest voltage on D+/D- will be 3.6V.

Your understanding is correct, the highest voltage will theoretically be 3.6V + 0.3V = 3.9V, however the nominal voltage of VUSB33 is 3.3V.

 

Kind regards,

Håkon