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??
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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
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