[Practice every Monday] What other level conversion circuits can you recommend and share?

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[Practice every Monday] What other level conversion circuits can you recommend and share? [Copy link]

Some netizens posted a discussion [ Will different supply voltages between the microcontroller and the interface chip cause communication problems? ],

In our daily electronic system design, there are often two or more control modules in one circuit, such as MCU-type single-chip circuits, communication modules, Bluetooth modules, etc. coexisting in a circuit system. These different circuit modules require different power supply voltages, such as one is 5V, the other is 3.3V, or 1.8V, and they coexist in a system. It is inevitable to communicate with each other. To communicate between them, the TXD and RXD pins must be connected, and communication level conversion is very necessary.

Similarly, the microcontroller power supply voltage in the post is 3.3V, and the max232 power supply voltage is 5V, so there is a communication problem between them.

There are other discussion posts on the forum about level conversion

[ Please tell me the working principle of 3V / 1.8V level conversion circuit, with pictures ]

[ [Help] Hello everyone, I have a question about serial port communication level conversion, please help ]

[ [Help] Level conversion circuit ]

[ Problems with level conversion chips ]

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The question is, have you ever encountered level conversion in your daily circuit system design? What factors do you consider?

Which level conversion method do you prefer?

Please recommend and share your level design circuit.

[What other level conversion circuits or useful chips can you recommend? Please briefly describe the usage scenarios, advantages and disadvantages, precautions for use, etc.]