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TSS721A: Data_low level is 0.32V

Part Number: TSS721A

Dear Sir,

I use the chip's tx pin(pin_8) to drive FTDI 231 (USB2UART) but the data_low level=0.32V, Data_High level=3.2V.

Do you have any idea to reduce data_low level to 0.05V??

  • Hey Gordon,

    Looking at the datasheet, it appears that VOL (Voltage output low) is specified to be <.5V at 100uA but goes up at higher current.  I don't see any way to change this on the device.  


    if the voltage levels have to be that accurate you might have to make system-level adjustments.  You could try adding a simple buffer on the line to lower current draw.  That might help.   You could also add a comparator that will have a higher voltage level thresholds and have a stronger output drive.    

    Thanks,

    JD

  • What's the problem?

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