You often need an RS-232-to-TTL adapter for debugging or testing UARTs using a computer. But most of these adapters require an external power-supply adapter to power up the RS-232 transceiver. This ...

Although the communications world is dominated by USB and WiFi, many products still use RS232. While embedded controllers often feature one or more RS232 ports, they usually require signals with ttl ...

There are two stages, one which converts RS-232 to TTL, and the other converts TTL to USB. ... Posted in Microcontrollers Tagged converter, rs-232, rs-485, usb. Post navigation.

I think the point is you don’t need a TTL to RS232 for to talk to your 1.8-5V TTL device. Besides RS232 polarity is inverted c.f. TTL – 0v represents +V, 1.8-6V represents -V. Report comment ...