Hacked Gadgets Forum

February 19, 2007

How to make a dual-supply RS-232 to TTL level converter

at 3:32 pm. Filed under DIY Hacks, Electronic Hacks

With some free samples from Maxim/Dallas you could build this on the cheap.

“I had a little bit of free time to work with the MAX3222 chips that Dallas Semi sent me. These have all of the features of the MAX232 (two TX and two RX channels) as well as shutdown and output enable. The best feature is that the chip can operate from 3.0V to 5.5V so it can be quite versatile in connecting both TTL and LVTTL devices via serial port. I ended up making a small board that has a female db9 connector and has the RX, TX and power leads for easy access.”

Thanks Nick.