4 Channel Bidirectional Level Translator

Overview

This module is useful for communicating between 2 tracks that work at different logic voltages. For example, a sensor that works at 3.3 V and does not tolerate 5 V on logic pins, requires the use of this two-way level translator to communicate with an Arduino UNO-compatible development board.

This product has 4 individual channels, which means it is ideal for SPI communication protocols, I 2 C.

Specifications

• Supply voltage LV: 1.4 V to 3.6 V;
• Supply voltage HV: 1.65 V to 5.5 V;
• Max. Current / channel: 50 mA;
• Maximum LV / HV current: 100 mA;
• Compatible communication protocols: SPI, I 2 C, UART;
• Dimensions 16 mm x 16 mm;

Instructions for Use

If you've ever tried to connect a 3.3V device to a 5V system, you know what a challenge it can be. The CJMCU 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. This level converter also works with 2.8V and 1.8V devices. What really separates this Logic level converter from our previous versions is that you can successfully set your high and low voltages and step up and down between them safely on the same channel. Each level converter has the capability of converting 4 pins on the high side to 4 pins on the low side with two inputs and two outputs provided for each side.

The level converter is very easy to use. The board needs to be powered from the two voltages sources (high voltage and low voltage) that your system is using. High voltage (5V for example) to the 'HV' pin, low voltage ( 3.3V for example) to 'LV', and ground from the system to the 'GND' pin.

Make the hardware connections.

On the PCB board, the meaning of the pins (LV1-4, LV / HV, GND, and HV1-4) is marked. On the LV side, the low-voltage product (LV = LOW VOLTAGE) is connected, and the HV-connected product connects the product at a higher voltage (HV = HIGH VOLTAGE).

To supply the transducer, you need to apply a voltage to the HV pin and LV pin. Also, be sure to connect the GND pins to GND for each source.

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