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edit approved Nov 23, 2023 at 17:14
user3840170
edit approved Nov 23, 2023 at 17:14
user3840170
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Confusion with RS232 terminology for USB Is it okay to TTL converterscall a UART “RS-232” if it doesn’t respect voltage levels specified in the RS-232 standard?

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pnatk
pnatk
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Confusion with RS232 terminology for USB to TTL converters

I have been using this converter call it converter A to communicate an MCU through its UART pins RX TX. And I wouldn't call this RS232 because RS232 is about physical layer and voltage levels as explained below:

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But now there's a driver which for communication requires this RS232 TTL module call it converter B. Is this still the same type I have or different? I mean is the converter A and B same type? If so, why confusing naming them as RS232?