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4 Channel (I2C or SPI) 3.3V-5V Bi-Directional Logic Level Converter
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SKU: TES-EV102246
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4 Channel (I2C or SPI) 3.3V-5V Bi-Directional Logic Level Converter
Seamlessly bridge 3.3V and 5V logic devices with this compact 4-channel bi-directional logic level converter from The Engineer Store, Bengaluru. Designed for I2C, SPI, UART, and general GPIO level shifting, this module ensures safe, reliable communication between microcontrollers, sensors, and peripherals operating at different voltage levels. Fast shipping across India with 7-day warranty on manufacturing defects and dedicated technical support.
Specifications
| Channels | 4 Bi-Directional |
| Low-Side Voltage (LV) | 1.8V - 3.3V |
| High-Side Voltage (HV) | 3.3V - 5V |
| Supported Protocols | I2C, SPI, UART, GPIO |
| Direction | Bi-Directional (both ways simultaneously) |
| Conversion Method | BSS138 N-Channel MOSFET with 10kOhm pull-up resistors |
| Max Data Rate | ~2 MHz (suitable for standard & fast-mode I2C) |
| Pinout | LV, LV1-LV4, GND | HV, HV1-HV4, GND |
| Board Dimensions | ~15mm x 13mm (compact breakout) |
| Header Pins | Included (may require soldering) |
| Operating Temperature | -40 degreesC to +85 degreesC |
| Type | Logic Level Shifter / Voltage Translator Module |
| Origin | Original/Authentic |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 |
Key Features
- True Bi-Directional Shifting: Each of the 4 channels converts signals in both directions simultaneously - ideal for I2C's open-drain SDA/SCL lines where master and slave both drive the bus.
- Safe Voltage Translation: Protects sensitive 3.3V devices (Raspberry Pi, ESP32, STM32) from 5V logic damage when interfacing with Arduino Uno, legacy sensors, or 5V displays.
- BSS138 MOSFET-Based Design: Uses proven N-channel MOSFET topology with on-board 10kOhm pull-up resistors for clean, reliable signal transitions.
- Multi-Protocol Compatible: Works with I2C (2 channels for SDA + SCL), SPI (4 channels for MOSI, MISO, SCK, CS), UART (TX + RX), or any combination of digital signals.
- Breadboard Friendly: Compact dual-inline form factor with clearly labeled pins drops directly into standard breadboards or perfboards.
- Wide Voltage Range: Low side supports 1.8V to 3.3V; high side supports 3.3V to 5V - covering virtually all common microcontroller voltage levels.
- No External Components Needed: Pull-up resistors are built in; simply connect your voltage references and signal lines.
Why Choose This?
- 100% authentic modules sourced from trusted suppliers - no counterfeit or substandard components
- 1-5 day shipping, 7-8 day delivery from our Bengaluru warehouse to most Indian cities
- Expert technical support included - get help with wiring, protocol setup, and troubleshooting
- Essential building block for any mixed-voltage project - saves hours of debugging voltage incompatibility issues
- Proven BSS138 design trusted by makers and engineers worldwide
How It Works
The module uses BSS138 N-channel MOSFETs on each channel along with 10kOhm pull-up resistors on both sides. When neither side drives the line low, pull-ups hold both sides high at their respective voltage levels. When the low-voltage side pulls a line low, the MOSFET's gate-source voltage turns it on, pulling the high-voltage side low as well. When the high-voltage side pulls low, the MOSFET's body diode and gate characteristics pull the low-voltage side low. This elegant design requires no direction pin and works automatically in both directions - making it perfect for I2C where both master and slave communicate on the same wires.
Wiring Guide
| Module Pin | Connection |
| LV | 3.3V supply from your low-voltage device (e.g., Raspberry Pi 3.3V pin) |
| HV | 5V supply from your high-voltage device (e.g., Arduino 5V pin) |
| GND (both sides) | Common ground - connect all device grounds together |
| LV1 - LV4 | Signal lines to/from 3.3V device |
Frequently Asked Questions
When will I receive my order?
Products ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
Is technical support available?
Yes, 24/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Buy 4 Channel (I2C or SPI) 3.3V-5V Bi-Directional Logic Level Converter Online in India
Purchase the 4 Channel (I2C or SPI) 3.3V-5V Bi-Directional Logic Level Converter online at The Engineer Store - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on 4 Channel (I2C or SPI) 3.3V-5V Bi-Directional Logic Level Converter with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.
Looking to buy 4 Channel (I2C or SPI) 3.3V-5V Bi-Directional Logic Level Converter at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.
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4 Channel (I2C or SPI) 3.3V-5V Bi-Directional Logic Level Converter
Seamlessly bridge 3.3V and 5V logic devices with this compact 4-channel bi-directional logic level converter from The Engineer Store, Bengaluru. Designed for I2C, SPI, UART, and general GPIO level shifting, this module ensures safe, reliable communication between microcontrollers, sensors, and peripherals operating at different voltage levels. Fast shipping across India with 7-day warranty on manufacturing defects and dedicated technical support.
Specifications
| Channels | 4 Bi-Directional |
| Low-Side Voltage (LV) | 1.8V - 3.3V |
| High-Side Voltage (HV) | 3.3V - 5V |
| Supported Protocols | I2C, SPI, UART, GPIO |
| Direction | Bi-Directional (both ways simultaneously) |
| Conversion Method | BSS138 N-Channel MOSFET with 10kOhm pull-up resistors |
| Max Data Rate | ~2 MHz (suitable for standard & fast-mode I2C) |
| Pinout | LV, LV1-LV4, GND | HV, HV1-HV4, GND |
| Board Dimensions | ~15mm x 13mm (compact breakout) |
| Header Pins | Included (may require soldering) |
| Operating Temperature | -40 degreesC to +85 degreesC |
| Type | Logic Level Shifter / Voltage Translator Module |
| Origin | Original/Authentic |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 |
Key Features
- True Bi-Directional Shifting: Each of the 4 channels converts signals in both directions simultaneously - ideal for I2C's open-drain SDA/SCL lines where master and slave both drive the bus.
- Safe Voltage Translation: Protects sensitive 3.3V devices (Raspberry Pi, ESP32, STM32) from 5V logic damage when interfacing with Arduino Uno, legacy sensors, or 5V displays.
- BSS138 MOSFET-Based Design: Uses proven N-channel MOSFET topology with on-board 10kOhm pull-up resistors for clean, reliable signal transitions.
- Multi-Protocol Compatible: Works with I2C (2 channels for SDA + SCL), SPI (4 channels for MOSI, MISO, SCK, CS), UART (TX + RX), or any combination of digital signals.
- Breadboard Friendly: Compact dual-inline form factor with clearly labeled pins drops directly into standard breadboards or perfboards.
- Wide Voltage Range: Low side supports 1.8V to 3.3V; high side supports 3.3V to 5V - covering virtually all common microcontroller voltage levels.
- No External Components Needed: Pull-up resistors are built in; simply connect your voltage references and signal lines.
Why Choose This?
- 100% authentic modules sourced from trusted suppliers - no counterfeit or substandard components
- 1-5 day shipping, 7-8 day delivery from our Bengaluru warehouse to most Indian cities
- Expert technical support included - get help with wiring, protocol setup, and troubleshooting
- Essential building block for any mixed-voltage project - saves hours of debugging voltage incompatibility issues
- Proven BSS138 design trusted by makers and engineers worldwide
How It Works
The module uses BSS138 N-channel MOSFETs on each channel along with 10kOhm pull-up resistors on both sides. When neither side drives the line low, pull-ups hold both sides high at their respective voltage levels. When the low-voltage side pulls a line low, the MOSFET's gate-source voltage turns it on, pulling the high-voltage side low as well. When the high-voltage side pulls low, the MOSFET's body diode and gate characteristics pull the low-voltage side low. This elegant design requires no direction pin and works automatically in both directions - making it perfect for I2C where both master and slave communicate on the same wires.
Wiring Guide
| Module Pin | Connection |
| LV | 3.3V supply from your low-voltage device (e.g., Raspberry Pi 3.3V pin) |
| HV | 5V supply from your high-voltage device (e.g., Arduino 5V pin) |
| GND (both sides) | Common ground - connect all device grounds together |
| LV1 - LV4 | Signal lines to/from 3.3V device |
Frequently Asked Questions
When will I receive my order?
Products ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
Is technical support available?
Yes, 24/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Buy 4 Channel (I2C or SPI) 3.3V-5V Bi-Directional Logic Level Converter Online in India
Purchase the 4 Channel (I2C or SPI) 3.3V-5V Bi-Directional Logic Level Converter online at The Engineer Store - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on 4 Channel (I2C or SPI) 3.3V-5V Bi-Directional Logic Level Converter with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.
Looking to buy 4 Channel (I2C or SPI) 3.3V-5V Bi-Directional Logic Level Converter at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.