Description: The ‘must have’ IC for TTL/CMOS projects finally has its own breakout board! This is the RS232 converter IC that is capable of running at 3V and communicating with 5V logic.
We’ve taken the SOIC package MAX3232 and broken out all the pins you need to set up your RS232 to TTL connection. We’ve also included the necessary 0.1uF charge pump capacitors. Also remember that because the MAX3232 operates at a broader voltage range than the 232 (3 - 5.5V) you can use this on both your 3.3 and 5V projects!
Based on 4 ratings:
it works very good, nice design.
I needed this because the device I’m attaching to was RS232 format output only, and the Pi /dev/ttyAMA0 only likes TTL, so this did the trick. Only thing I had hesitation about was that I had to go to Maxim’s documentation to figure out the different pinouts, and I’d have rather that info been readily obvious to me on Sparkfun’s website, but I couldn’t find it.
Works great, just like you’d expect a MAX3232 to be. Would have 5 stars if it could plug into the programming headder on the Arduino Pros and have holes for the terminal side DB9 connector along with headders for the RX2 and TX2. But this is good, much handier than stuffing DIP in breadboard along with the caps.
I needed a 3.3v TTL to RS232 converter to talk to my HC-06 Bluetooth modules in order to use the AT commands. Worked great.