February 15, 2015


Need some help.

This is the Max3232 serial to ttl converter i'm using.

On the output pins (left side of board) i have 2 rows of headers. Do you know if one side of the pins is for 5v power and 5v logic and the side is for 3.3v power and 3.3v logic or are they just the 2 rows with the same traces to the pins on the 3232 (kind of like redundant connections)

1 vcc (input)
2 tx
3 rx
4 gnd

Does the chip (3232) output on the tx rail 3.3v logic when the vcc pin is powered at 3.3v and does the same apply when applying 5v to the VCC pin, The tx now is 5v logic?

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