tony_lth
Advanced Member level 5
Hi, ALL,
I found a circuit, which used 74LV066D to switch on or off of the RS232 signal.
The power supply is 3.3V.
But we know RS232 is >3V (+) or <-3V (-), so I doubt how 74LV066D can work?
Does 74LV066D can output more than 3.3V signal?
Or just output 3.3V and GND signal, so how about the negative signal of RS232?
Anyway, the circuit can work all the temperature. I really worry about it.
Who can comment?
Best,
Tony Liu
I found a circuit, which used 74LV066D to switch on or off of the RS232 signal.
The power supply is 3.3V.
But we know RS232 is >3V (+) or <-3V (-), so I doubt how 74LV066D can work?
Does 74LV066D can output more than 3.3V signal?
Or just output 3.3V and GND signal, so how about the negative signal of RS232?
Anyway, the circuit can work all the temperature. I really worry about it.
Who can comment?
Best,
Tony Liu