- Thu Sep 28, 2017 3:22 pm
#196348
Will the SparkFun RS232 Shifter (PRT-00449) drive negative voltage at the RS232 output?
(I am talking about the TTL/RS232 device.)
I had assumed so, but I do not understand the circuit, and I just realized I have not noticed anything explicitly saying it will.
It would appear to receive and convert RS232 negative voltage to TTL High, but does send TTL High as RS232 negative voltage?
Also, if the unit is powered at say 5V, what voltage swing can one expect at the RS232 output?
Thanks.
(I am talking about the TTL/RS232 device.)
I had assumed so, but I do not understand the circuit, and I just realized I have not noticed anything explicitly saying it will.
It would appear to receive and convert RS232 negative voltage to TTL High, but does send TTL High as RS232 negative voltage?
Also, if the unit is powered at say 5V, what voltage swing can one expect at the RS232 output?
Thanks.