TXB0104 Bi-Directional Level Shifter (TXB0104)

Description

Bi-Directional Level Shifter ( ) ● Premium Quality Materials ● 100% Satisfaction Guaranteed ▶ Free Gift with Order

Because the Arduino (and Basic Stamp) are 5V devices, and most modern sensors, displays, flash cards and modes are 3.3V-only, many makers secure that they need to perform level shifting/conversion to protect the 3.3V device from 5V.

Although one can use resistors to make a divider, for high-speed transfers, the resistors can add a lot of slews and cause havoc that is tough to debug. For that reason, we like using the 4050/74LVX245 series and similar logic to perform proper level shifting. The only problem is that they are only good in one direction which can be a problem for some speciality bi-directional interfaces and also makes wiring a little hairy.

That’s where this lovely chip, the TXB0104 bi-directional level converter comes in! This chip runs bidirectional level shifting from pretty much any voltage to any voltage and will auto-detect the direction. The only thing that doesn’t work well with this chip is i2c (because it uses strong pullups wh