I am trying to make two Arduino's talk to each other using an XBee S2C. I am using a TXB0104 Bi-Directional Level Shifter by Adafruit to convert the logic level on the 5v Arduino to 3.3v Xbee S2C. My question is where do I connect the OE pin on the TXB0104 Bi-Directional Level Shifter?
If you have anymore information on how to wire a Xbee S2C to an Arduino using a TXB0104 Bi-Directional Level Shifter please reply.
Thank you, in advance.
Have a look into the datasheet.
When the output-enable (OE) input is low, all outputs are placed in the high-impedance state. To ensure the
high-impedance state during power up or power down, OE should be tied to GND through a pulldown resistor; the minimum value of the resistor is determined by the current-sourcing capability of the driver.
The TXB0104 is designed so that the OE input circuit is supplied by VCCA.
If you do not care about the high impedance state tie the pin to VCCA.
Could you show me a diagram of the circuit?
Have a look into the datasheet page 1. Just connect the OE pin to the VCCA pin. You just need to find the pins on your module.
As you can see from the first point of the first page under Features, VCCA is the smaller of the two supply voltages (3.3V) and VCCB the larger one (5V).