2 Replies Latest reply on Nov 15, 2019 1:23 AM by JayakrishnaT_76

    FX3: Will supplying 5V on a USB data pin (D  or D-) and no other power rails cause damage?

    JeRo_4581061

      5V was placed on one of the data pins (D+ or D-) and no other power was supplied to the device.  Would damage have occurred?

       

      We have a board that uses the FX3 part (CYUSB3014-BZX) and is powered by the USB bus.  The wiring harness had a mistake and 5V was placed on one of the data pins (D+ or D-).  Since the board is powered by the USB bus, no other power rails were present to the FX3 part.  I don't see any info in the datasheet about absolute levels on the USB pins.

       

      I need the questioned answered urgently.

       

      Thank you,

       

      Jeff