
BOB-12009 · SparkFunActive


The SparkFun bi-directional logic level converter is a small device that safely steps down 5V signals to 3.3V AND steps up 3.3V to 5V at the same time. (SparkFun BOB-12009)
| Part number | BOB-12009 |
|---|---|
| Manufacturer | SparkFun |
| Category | Interface & Expansion › Level Shifters |
| Pins | 12 |
| Voltage (max) | 5 V |
| Voltage (min) | 3.3 V |
SparkFun Logic Level Converter - Bi-Directional pinout
| Pin | Name | Type | Description |
|---|---|---|---|
| 1 | HV1 | bidirectional | |
| 2 | HV2 | bidirectional | |
| 3 | HV | bidirectional | |
| 4 | GND | ground | |
| 5 | HV3 | bidirectional | |
| 6 | HV4 | bidirectional | |
| 7 | LV1 | bidirectional | |
| 8 | LV2 | bidirectional | |
| 9 | LV | bidirectional | |
| 10 | GND | ground | |
| 11 | LV3 | bidirectional | |
| 12 | LV4 | bidirectional |
Schematic symbol and footprint
Footprint: Bi-Directional Logic Level Converter (header pads) — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.
Datasheet
Where to buy
Stock and prices from the suppliers, checked 2026-10-08; excluding tax and shipping.
Related parts

4-channel I2C-safe Bi-directional Logic Level ConverterADA757

8-channel Bi-directional Logic Level ConverterADA395

Adafruit NeoPXL8 Friend - 8 x Strands NeoPixel Level ShifterADA3975

Adafruit QT 5V to 3V Level Shifter Breakout - STEMMA QT / QwiicADA5637

SparkFun Voltage-Level Translator Breakout - TXB0104BOB-11771

TXB0104 Bi-Directional Level ShifterADA1875

Adafruit LTC4316 I2C Address TranslatorADA5914

Adafruit QT 3V to 5V Level Booster Breakout - STEMMA QT / QwiicADA5649