Logic Level Converter - 4 Channels Bi-directional

Logic Level Converter - 4 Channels Bi-directional

  • แบรนด์: Cytron
  • รหัสสินค้า: LC04A
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Tried connecting a 3.3V device to a 5V system, or the other way around? You should know the challenge it take. This Logic Converter will help you out esily. Small size yet it convert 5V signals to 3.3V and vice versa effectively and in high speed. This converter also works with 2.8V and 1.8V devices. Each level converter has the capability of converting 4 pins on the high side to 4 pins on the low side. 4 channels for each site.
Another good feature is this converter is Breadboard friendly! Can be used with normal serial, I2C, SPI, and any other digital signal. Does not work with an analog signal.
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 (2.8V for example) to 'LV', and ground from the system to the 'GND' pin.

Pins are labeled as Receiver and Transmitter:

These labels are relative to the board. Example:

3.3V  GPS module                   LC04A                          5V Microcontroller System
3.3V Tx pin                         LT1 ----------  HT1               5V Rx pin
3.3V Rx pin                        LR1 ---------- HR1               5V Tx pin

Don't forget the '+' for 3.3V and 5V, also the ground for both site.

A digital logic 1 (high) going into the LT1 pin on the 3.3V side will show up on the HT1pin on the 5V side as 5V. This LC04A is bidirectional, it can be use for I2C communication line too.

The LC04A board comes with two 6 ways header pin, not soldered to provide you the flexibility to use it.

Dimension:15mm x 16mm



may i have the footprint of this module ? ( soo kin wah, 12/08/2019 )
Hi, sorry the document available as shown on the website.
If this module is bi directional, why does it have individual transmit and receive at the high and low voltage side ? Can I connect 5V MOSI, MISO, SCLK and CS on one side and expect a 3.3V from the other side ? For these four pins I only need one of these module ? ( Justin Choo, 27/03/2019 )
Hi, yes this is bidirectional logic level. For more details question please post on our forum as here is for short inquires only. Thanks
Is each pin bidirectional? You documentation says it works with I2C, which requires bidirectional SDA pin,. Or, could this one board convert 4 signals from 3.3 to 5V ? ( Paul Rowntree, 17/12/2017 )
Hi, yes it is bidirectional and can convert 4 signals from 3.3 to 5V too. For further questions, please visit to our technical forum for similar question or post your question there, as this session is only for short inquiry. Thanks.
Hello, Is this work for 2.8V to 1.8V conversion and vice versa? ( Tze Lin, 09/11/2016 )


Yes. If you have further question, you can ask at our technical forum, as this session is only for short inquiry. Thanks. :) 

May i know how is the connection between LC04A converter and esp8266 connection to the arduino board? ( honglim, 30/04/2016 )

We believe the User's Manual of LC04A (Which you can click under the "Attachment" tab in the product page) have example of low and high voltage interface. Do refer to it and modify according to your circuit :) If you have further inquiry, please do discuss in our technical forum as this section is for short inquiry, thanks :)

Hi, I have a motor encoder run with 5V. can i used tis logic level converter to convert the encoder signal to 3.3V for application with arduino due? ( Jessica, 22/10/2015 )

Hi, LC04A is bidirectional. it convert 5V signals to 3.3V and vice versa (3.3V to 5V). You can refer to the user manual. Thanks. :)

hi, is this module compatible with wifi module esp 8266 and with PIC 16f877a? ( kelvin, 19/10/2015 )

Hi. Yes, it is compatible. Thanks. :)

Hello, i have arduino due. Is this compatible with due? Do i just need to connect between a sensor and arduino due without pull-up resistor? ( Louis, 24/11/2014 )

Yes, it's compatible with Arduino Due. Please refer to the user's manual for the wiring diagram example.

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