Raspberry Pi Zero TXD(PIN8), RXD(PIN10) voltage level

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1

Could you let me know the Raspberry Pi Zero TXD(PIN8), RXD(PIN10) voltage level?

Is it TTL/CMOS level or EIA-232 level?

2

Google “raspberry pi zero tx rx”. Many sites say the PI Zero GPIO are all 3.3V and not 5V tolerant.

You need a level shifter to go to any other voltage.

3

Hi Steven.

DanV is correct. All the Pi GPIO pins are 3.3 volt TTL and are not 5 volt tolerant.

4

OK, I got it. Thanks DanV and TS-Chris!