Adafruit
8-channel Bi-directional Logic Level Converter [TXB0108]
An 8-channel bidirectional logic level converter breakout based on the TXB0108 chip. This converter automatically detects signal direction, eliminating the n...
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An 8-channel bidirectional logic level converter breakout based on the TXB0108 chip. This converter automatically detects signal direction, eliminating the need for direction control pins. It shifts between virtually any two voltage levels, making it ideal for connecting 3.3V and 5V devices.
The breakout includes 0.1uF decoupling capacitors on both voltage sides and a 10K pull-up resistor on the output enable pin, so it works straight out of the box on a breadboard.
Key Features
- 8-Channel Bidirectional – Auto-detects signal direction
- TXB0108 Chip – Shifts between any two voltage levels
- Breakout Board – Pre-soldered with decoupling caps and pull-up
- Breadboard Friendly – Standard 0.1" pin spacing
Ideal For
- Bidirectional level shifting between 3.3V and 5V devices
- SPI and other bidirectional bus interfaces
- Prototyping with mixed-voltage components
Jargon buster
Plain-language definitions for the technical terms used above.
- AVR
- AVR is a family of 8-bit microcontrollers (made by Microchip, formerly Atmel) used in many classic Arduino-style boards such as the Uno and Nano. They are widely supported but older, which can be a limit for memory- or speed-intensive tasks.
- breakout
- A breakout board carries a small or fine-pitched component and brings its connections out to standard, breadboard- and header-friendly pins. Describing a part as a breakout means it can be wired into a project without soldering directly to the component's tiny contacts.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- SPI
- A fast serial communication bus often used for displays, memory cards, and sensors. It matters because SPI devices need specific pins for clock and data, plus a separate chip-select line for each device.
- UPS
- An uninterruptible power supply is a battery-backed power system that keeps a device running when external power is unplugged or fails. For an embedded computer, it helps prevent sudden shutdowns that can corrupt files or interrupt a project.
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