RS232 level conversion module 5v <> 3.3v


Denne levelconverter indeholder 2 convertere, Chan1 og Chan2
Begge har en 3.3v side LV, og en 5v side HV.

TXI/TXO er bidirektionelle convertere.
RXI/RXO er diskrete spændingsdeler


LV siden (3.3v):
LV connect to 3V system power.
GND connect to 3V system GND.
Channel1 - TXI connect to 3V system TX.
Channel2 - TXI connect to 3V system RX.

HV siden (5v):
HV connect to 5V system power.
GND connect to 5V system GND.
Channel 1- TXO connect to 5V system RX.
Channel 2- TXO connect to 5V system TX.

Level converter





Download BSS138 datablad



Køb level converter



Arduino 5vLevel converter3v enhedBemærkning
TX Chan1 TXI -> TXO RX
RX Chan2 TXI -> TXO TX
5vHV
3,3vLV
GNDGND