SparkFun Logic Level Converter - Bi-Directional
Small bidirectional logic-level converter that simultaneously shifts 5V signals down to 3.3V and 3.3V signals up to 5V. Suited for SPI, I2C, and UART buses between mixed-voltage devices.
Small bidirectional logic-level converter that simultaneously shifts 5V signals down to 3.3V and 3.3V signals up to 5V. Suited for SPI, I2C, and UART buses between mixed-voltage devices.
HV
GND
HV1
HV2
HV3
HV4
LV
GND
LV1
LV2
LV3
LV4
| Pin | Position | Type | Function |
|---|---|---|---|
| HV | 1 | Power | HV |
| GND | 2 | Ground | GND |
| HV1 | 3 | GPIO | HV1 |
| HV2 | 4 | GPIO | HV2 |
| HV3 | 5 | GPIO | HV3 |
| HV4 | 6 | GPIO | HV4 |
| LV | 7 | Power | LV |
| GND | 8 | Ground | GND |
| LV1 | 9 | GPIO | LV1 |
| LV2 | 10 | GPIO | LV2 |
| LV3 | 11 | GPIO | LV3 |
| LV4 | 12 | GPIO | LV4 |
HV
GND
HV1
HV2
HV3
HV4
LV
GND
LV1
LV2
LV3
LV4
BSS138/PCA9306 I2C shifters, TXB0104/TXS0108E auto-direction translators, 74LVC245/74AHCT125 buffers, and 12V-to-3.3V converters — matched to bus type and direction, not channel count.
2-Channel Level Converter (12V to 3.3V) visual preview2-Channel Level Converter (12V to 3.3V)
2-Channel Level Converter (12V to 5V) visual preview2-Channel Level Converter (12V to 5V)
4-channel I2C-safe Bi-directional Logic Level Converter visual preview4-channel I2C-safe Bi-directional Logic Level Converter
4-Channel Level Converter (12V to 3.3V) visual preview4-Channel Level Converter (12V to 3.3V)
4-Channel Level Converter (12V to 5V) visual preview4-Channel Level Converter (12V to 5V)
74AHCT125 - Quad Level-Shifter (3V to 5V) visual preview74AHCT125 - Quad Level-Shifter (3V to 5V)
74AHCT14 - Logic Level Inverter / Level Shifter visual preview74AHCT14 - Logic Level Inverter / Level Shifter
74LVC245 - Breadboard Friendly 8-bit Logic Level Shifter visual preview74LVC245 - Breadboard Friendly 8-bit Logic Level Shifter
8-channel Bi-directional Logic Level Converter visual preview8-channel Bi-directional Logic Level Converter
Adafruit QT 3V to 5V Level Booster Breakout - STEMMA QT / Qwiic visual previewAdafruit QT 3V to 5V Level Booster Breakout - STEMMA QT / Qwiic
Adafruit QT 5V to 3V Level Shifter Breakout - STEMMA QT / Qwiic visual previewAdafruit QT 5V to 3V Level Shifter Breakout - STEMMA QT / Qwiic
Fermion: TXS0104E 4-Bit Level Translator (Breakout) visual previewFermion: TXS0104E 4-Bit Level Translator (Breakout)
10W Super Bright LED - Violet visual previewWS2812/SK6812 NeoPixel strips, rings and Jewels, APA102 DotStar pixels, and plain analog RGB strips — each matched to its protocol and host, not just its connector.
Components · Addressable LEDs · 180 parts
18-Channel 8-bit PWM LED Driver w/ I2C Interface visual preview74HC logic gates, MCP3008/MCP23017 ADCs and expanders, 24LC256 EEPROM, 4N25-series optocouplers and ULN2803A drivers — bare DIP chips with no breakout-board conveniences like pull-ups or level shifting.
Components · Integrated circuits · 68 parts
10-bit ADC (SPI) visual previewADS1115/MCP3421 ADCs, MCP4725 and GP8413 DACs, CP2102 USB-UART boards, and I2C plumbing like the LTC4316 address shifter — matched to bus, resolution and signal range.
Components · Interface converters · 114 parts
256MB Micro SD Memory Card visual preview24LC32/25LC256 EEPROM, I2C FRAM, 64Mbit PSRAM, and microSD breakouts up to 64GB — matched to write frequency and data volume, not just interface.
Components · Memory & storage · 39 parts