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This logic level converter solves a common problem in mixed-board projects: connecting a 3.3V device, such as many sensor modules or an ESP32, directly to a 5V device like a classic Arduino Uno risks damaging the lower-voltage side, since a 5V signal exceeds what most 3.3V-only inputs can safely tolerate. This module bridges that gap across 4 independent channels, converting signals bi-directionally between a low side (Lx) rated 1.8V to 5V and a high side (Hx) rated 2.8V to 6V.
Because the conversion works in both directions rather than only stepping voltage down, it's suited to genuinely two-way communication protocols where data needs to flow both ways across the same lines, rather than a simple one-way sensor output.
It explicitly supports I2C, SPI and asynchronous TTL serial interfaces, covering the great majority of common communication methods used between microcontrollers, sensors and peripheral modules. The listing notes compatibility with Arduino, Raspberry Pi, Intel Edison and NXP Mbed boards, reflecting how broadly useful a level shifter like this is across different hobbyist and semi-professional platforms.
Physically, it breaks out as two rows of 6-pin headers, matching standard breadboard hole spacing, and the board itself measures just 16mm by 13mm by 3mm, weighing about 2g, small enough to tuck between two other modules on a crowded breadboard.
Anyone connecting a 3.3V sensor, module or microcontroller to a 5V board, or vice versa, especially over I2C or SPI where both devices need to read and write on the same lines, will find this a small but important safety and compatibility component.
4, each working independently.
Yes, it is a true bi-directional converter, not just a one-way step-down.
I2C, SPI and asynchronous TTL serial.
1.8V to 5V on the low side, and 2.8V to 6V on the high side.
Yes, it breaks out as two rows of 6-pin headers matching standard breadboard spacing.
| Brand | Generic |
|---|---|
| Channels | 4.000000 |
| Supported Protocols | I2C, SPI, TTL Serial |
| Selling unit | PCS |
