Raspberry Pi

Conversor de Niveles Logicos TXB0108 - 8 Canales


Clave: 232

Precio: $ 268.00 MXN*
* Pesos Mexicanos

Este conversor permite acoplar los niveles de sistemas de 3.3V a 5V como por ejemplo Arduino o Raspberry Pi. El chip TXB0108, el que se basa esta placa, es un conversor bidireccional que detecta automáticamente la dirección de las señales. Es válido para cualquier señal digital (No analógica) aunque no puede ser utilizado para I2C.

Ideal para conectar sensores y dispositivos de 3.3V al Arduino (5V) o conectar sensores y dispositivos de 5V a la Raspberry Pi (3.3).  Con esto evitaras dañar los sensores, dispositivos o incluso la tarjeta Raspberry Pi.

También tenemos una versión mas pequeña, de 4 canales, clic aqui.


That's where this lovely chip, the TXB0108 bi-directional level converter comes in! This chip perform bidirectional level shifting from pretty much any voltage to any voltage and will auto-detect the direction. Only thing that doesn't work well with this chip is i2c (because it uses strong pullups which confuse auto-direction sensor). If you need to use pullups, you can but they should be at least 50K ohm - the ones internal to AVRs/Arduino are about 100K ohm so those are OK! Its a little more luxurious than a 74LVX245 but if you just don't want to worry about directional pins this is a life saver!

Since this chip is a special bi-directional level shifter it does not have strong output pins that can drive LEDs or long cables, it's meant to sit on a breadboard between two logic chips! 


This breakout saves you from having to solder the very fine pitch packages that this chip comes with. We also add 0.1uF caps onto both sides and a 10K pull-up resistor on the output enable pin so you can use it right out of the box!

 

Recursos:

    TXB0108 Datasheet.
    TXB0108 App note detailing how it works!
    Tutorial de ejemplo.

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