4 Channels IIC I2C Logic Level Converter Bi-Directional Module 3.3V to 5V Shifter for Arduino – KSH 300 at HIMASTORES Mombasa – best electronics in Kenya
Home / Modules / 4 Channels IIC I2C Logic Level Converter Bi-Directional Module 3.3V to 5V Shifter for Arduino

4 Channels IIC I2C Logic Level Converter Bi-Directional Module 3.3V to 5V Shifter for Arduino

SKU: HMJ765 Category: Modules
KSH 300.00
Out of Stock

Product Description

4Channel IIC I2C Logic Level Converter BiDirectional Module

3.3V to 5V Shifter for Arduino and Sensor Interfacing

This 4channel bidirectional logic level converter enables safe communication between 5V and 3.3V devices. It is essential for interfacing 3.3V sensors and modules with 5V Arduino boards.

4 BiDirectional Channels Convert up to 4 signals simultaneously
I2C Compatible Perfect for SDA and SCL lines with pullup support
Operating voltage is 1.8V to 5.5V on both sides
Use with I2C, UART, SPI, and GPIO signals
Do not exceed maximum voltage on either side

Technical Specifications

ParameterValue
Number of Channels4
Low Voltage Side1.8V to 3.3V
High Voltage Side2.8V to 5.5V
Max Frequency100kHz (I2C typical)
Current Capacity20mA per channel
DirectionBi-directional

= Key Features =

BiDirectional Conversion No direction control needed

I2C Pullup Support Works with standard I2C signals

Compact Design - Small footprint for tight spaces

Simple Wiring - Labeled pins for easy connection

UltraLow Power Passive design, no external power needed

= Applications =

  1. 3.3V sensor to 5V Arduino
  2. I2C OLED and LCD displays
  3. MPU6050 and other IMUs
  4. 3.3V wireless modules (NRF24L01, ESP8266)
  5. Bi-directional UART communication
  6. Connecting 5V displays to 3.3V boards
Essential for Mixed Voltage Systems - Prevents damage to 3.3V devices
Simple and Reliable - Works with most common signals

√ 4 channels for multiple signals

√ Passive design requires no extra power

√ Ready for breadboard and PCB

Connection Guide

Voltage references:

  • HV: Connect to 5V power (high voltage side)
  • LV: Connect to 3.3V power (low voltage side)
  • GND: Common ground for both sides

Channel mapping:

  • HV1 ↔ LV1 (Channel 1)
  • HV2 ↔ LV2 (Channel 2)
  • HV3 ↔ LV3 (Channel 3)
  • HV4 ↔ LV4 (Channel 4)

Typical I2C wiring:

  • SDA (5V) → HV1, LV1 → SDA (3.3V)
  • SCL (5V) → HV2, LV2 → SCL (3.3V)
Connect GND first before any signal lines
Use 4.7kΩ pull-up resistors on both sides for I2C
Do not connect HV power before LV power
Verify voltage limits before connection

Understanding Bi-Directional Conversion

The module uses MOSFET-based level shifting that automatically detects signal direction. This allows signals to flow both ways without any control pins, making it perfect for I2C and other bidirectional protocols.

Automatic Direction - No software control needed

Fast Signal Response - Works with standard protocols

Safe for I2C communication
Works with 3.3V and 5V devices

Troubleshooting

I2C not working:

  • Check pull-up resistors on both sides
  • Verify voltage references connected
  • Avoid long wires

No signal through:

  • Check GND connection
  • Verify channel matching
  • Avoid loose connections