When you looking for logic level shifter bi directional, you must consider not only the quality but also price and customer reviews. But among hundreds of product with different price range, choosing suitable logic level shifter bi directional is not an easy task. In this post, we show you how to find the right logic level shifter bi directional along with our top-rated reviews. Please check out our suggestions to find the best logic level shifter bi directional for you.
![Adafruit 4-Channel I2C-Safe Bi-Directional Logic Level Converter [ADA757]](https://images-na.ssl-images-amazon.com/images/I/61PUfD1uprL.jpg)
![Adafruit 8-Channel Bi-Directional Logic Level Converter [ADA395]](https://images-na.ssl-images-amazon.com/images/I/51FQbARdGwL.jpg)
Reviews
1. Cylewet 10Pcs 3.3V-5V 4 Channels Logic Level Converter Bi-Directional Shifter Module for Arduino (Pack of 10) CYT1076
Feature
Small size, 1.3 1.5cm/ 0.51 0.59inIt can bidirectionally transfer with 4 channels between high logic voltage and low logic voltage
The 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
Each logic 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
Description
It can bidirectionally transfer with 4 channels between high logic voltage and low logic voltage.The 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.
Each logic 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.
Instruction:
Take the high voltage (5V) and low voltage (3,3V) for example.
5V connects to HV pin;
3.3V connects to LV pin;
Ground from the system connects to GND pin.
Package Includes:
10 3.3V-5V 4 Channels Logic Level Converter Bi-directional Shifter Module
20 Single Row Pin Header(6 pins)
2. HiLetgo 10pcs 4 Channels IIC I2C Logic Level Converter Bi-Directional 3.3V-5V Shifter Module for Arduino
Feature
The 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 timeEach logic 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
3.It can bidirectionally transfer with 4 channels between high logic voltage and low logic voltage
Description
If you've ever tried to connect a 3.3V device to a 5V system, you know what a challenge it can be.This 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.
Package Include:
10* IIC I2C Logic Level Converter Bi-Directional Module
3. Cylewet 5Pcs 8 Channel Logic Level Converter Bi-Directional 3.3V to 5V TTL Shifter Module for Arduino (Pack of 5) CYT1082
Feature
Small size, 4.1 1.8cm/ 1.6 0.7inIt can bidirectionally transfer with 8 channels between high logic voltage and low logic voltage
Description
Small size, 4.1 1.8cm/ 1.6 0.7inIt can bidirectionally transfer with 8 channels between high logic voltage and low logic voltage
Instruction:
Take the high voltage (5V) and low voltage (3,3V) for example.
5V connects to HV pin;
3.3V connects to LV pin;
Negative pole connects to GND pin.
Package Includes:
5 8 Channel Logic Level Converter Bi-directional 3.3V to 5V TTL Shifter Module
5 Single Row Pin Header(10 pins)
4. Anmbest 5PCS 4 Chanels High Speed Bi-Directional 3.3V-5V Logic Level Converter for Arduino Raspberry Pi Electronic Development
Feature
This logic level converter features four high speed bi-directional 4 channels, allowing for safe and easy communication between devices operating at different logic levels. Converting between logic levels as low as 1.5 V on the lower-voltage side and as high as 18 V on the higher-voltage side.Its four channels are enough to support most common bidirectional and unidirectional digital interfaces, including IC, SPI, and asynchronous TTL serial.
The logic high levels on each side of the shifter are achieved by 10 k pull-up resistors to their respective supplies; these provide quick enough rise times to allow decent conversion of fast mode (400 kHz) IC signals or other similarly fast digital interfaces (e.g. SPI or asynchronous TTL serial). External pull-ups can be added to speed up the rise time further at the expense of higher current draw.
This module comes with male header pins that require soldering.
NOTE : Voltage supplied to the HV and GND inputs should be higher than that supplied to the LV side; Level shifters are purely digital, they can't map an analog voltage from one max voltage to another.
Description
As digital devices get smaller and faster, once ubiquitous 5 V logic has given way to ever lower-voltage standards like 3.3 V, 2.5 V, and even 1.8 V, leading to an ecosystem of components that need a little help talking to each other. For example, a 5 V part might fail to read a 3.3 V signal as high, and a 3.3 V part might be damaged by a 5 V signal. This level shifter solves these problems by offering bidirectional voltage translation of up to four independent signals, converting between logic levels as low as 1.5 V on the lower-voltage side and as high as 18 V on the higher-voltage side, and its compact size and breadboard-compatible pin spacing make it easy to integrate into projects.Technical Specifications:
Dual-supply bus translation :
Lower-voltage (LV) supply can be 1.5 V to 7 V
Higher-voltage (HV) supply can be LV to 18 V
Four bi-directional channels
Small size: 15 mm 13 mm/0.59 0.51(LW)
Breadboard-compatible pin spacing
Voltage input pins : 2 pins (GND and LV) on Low Voltage side; 2 pins (GND and HV) on High Voltage side
Data channels : 4 pins (LV1, LV2, LV3, and LV4) on Low Voltage side; 4 pins (HV1, HV2, HV3, and HV4) on High Voltage side
Package includes:
5 x 4 Chanels High speed Bi-Directional 3.3V-5V Logic Level Converter
Each set contains: 1x Logic Level Converter2x Single Row Pin Header(6 pins)
5. Luckkyme 10PCS 4 Channels IIC I2C Logic Level Converter Bi-directional Shifter Module 3.3V to 5V for Arduino
Feature
Logic level shifter Bi-Directional with 4 channels between high logic voltage and low logic voltageEach 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
This 4 channels 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
Small module size: 1.3cm X 1.5cm/0.51"x0.59"
Compatible with breadboard, can be directly use in breadboard
Description
Usage Instruction:
For example: High voltage is 5V, low voltage is 3.3V
HV connect with 5V power supply
LV connect with 3.3V power supply
GND connect the power negative pole
LVx input/output 3.3V TTL
HVx input/output 5V TTL
Bi-Directional transform between LVx and TVx
Package Includes:
10 x Logic Level Converter Bi-Directional transform module
20 x Single Row Pin Header(6 pins)
6. Adafruit 4-Channel I2C-Safe Bi-Directional Logic Level Converter [ADA757]
Feature
Adafruit Part Number: 757Stock Type: Breakout Boards >> Level Shifters & Expanders
In Stock & Ready to Ship
Description
Because the Arduino (and Basic Stamp) are 5V devices, and most modern sensors, displays, flash cards and modes are 3.3V-only, many makers find that they need to perform level shifting/conversion to protect the 3.3V device from 5V.
We do have some other handy level shifters in the shop, from the DIP 74LVC245 to the fancy bi-directional TXB0108 . However, neither of these are happy to work with I2C, which uses a funky pull-up system to transfer data back and forth. This level shifter board combines the ease-of-use of the bi-directional TXB0108 with an I2C-compatible FET design following NXP's app note.
This breakout has 4 BSS138 FETs with 10K pullups. It works down to 1.8V on the low side, and up to 10V on the high side. The 10K's do make the interface a little more sluggish than using a TXB0108 or 74LVC245 so we suggest checking those out if you need high-speed transfer.
While we designed it for use with I2C, this works as well for TTL Serial, slow <2MHz SPI, and any other digital interface both uni-directional and bidirectional. Comes with a fully assembled, and tested PCB with 4 full bidirectional converter lines as well as 2 pieces of 6-pin header you can solder on to plug into a breadboard or perfboard.
7. WeiMeet 4 Channels IIC I2C Logic Level Converter Bi-Directional Shifter Module 3.3V to 5V for Arduino (10 Pieces)
Feature
Logic level shifter Bi-Directional with 4 channels between high logic voltage and low logic voltageEach 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
This 4 channels 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
Small module size: 1.3cm X 1.5cm/0.51"x0.59"
Compatible with breadboard, can be directly use in breadboard
Description
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.Usage Instruction:
For example: High voltage is 5V, low voltage is 3.3V
HV connect with 5V power supply
LV connect with 3.3V power supply
GND connect the power negative pole
LVx input/output 3.3V TTL
HVx input/output 5V TTL
Bi-Directional transform between LVx and TVx
Package Includes:
10 x Logic Level Converter Bi-Directional transform module
20 x Single Row Pin Header(6 pins)
8. Gikfun 3.3-5V 4 Channels Logic Level Converter Bi-directional Shifter Module for Arduino (Pack of 10pcs) EK1919
Feature
The 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.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.
Dimensions: 0.63 x 0.52in (16.05 x 13.33mm)
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.
Packed with high quality box.
Description
If you've ever tried to connect a 3.3V device to a 5V system, you know what a challenge it can be. The 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, is very easy to use.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 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.
Dimensions: 0.63 x 0.52in (16.05 x 13.33mm)
Packed with high quality box.
Package included:
10 x 3.3-5V 4 Channels Logic Level Converter Bi-directional Shifter Module
20 x Single Row Pin Headers ( 6 pins )
9. Adafruit 8-Channel Bi-Directional Logic Level Converter [ADA395]
Feature
Adafruit Part Number: 395Stock Type: Breakout Boards >> Level Shifters & Expanders
In Stock & Ready to Ship
Description
Because the Arduino (and Basic Stamp) are 5V devices, and most modern sensors, displays, flash cards and modes are 3.3V-only, many makers find that they need to perform level shifting/conversion to protect the 3.3V device from 5V.
Although one can use resistors to make a divider, for high speed transfers, the resistors can add a lot of slew and cause havoc that is tough to debug. For that reason, we like using 4050/74LVX245 series and similar logic to perform proper level shifting. Only problem is that they are only good in one direction which can be a problem for some specialty bi-diectional interfaces and also makes wiring a little hairy.
That's where this lovely chip, the TXB0108 bi-directional level converter comes in! This chip perform bidirectional level shifting from pretty much any voltage to any voltage and will auto-detect the direction . Only thing that doesn't work well with this chip is i2c (because it uses strong pullups which confuse auto-direction sensor). If you need to use pullups, you can but they should be at least 50K ohm - the ones internal to AVRs/Arduino are about 100K ohm so those are OK! Its a little more luxurious than a 74LVX245 but if you just don't want to worry about directional pins this is a life saver!
Since this chip is a special bi-directional level shifter it does not have strong output pins that can drive LEDs or long cables, it's meant to sit on a breadboard between two logic chips! If you do not need instant bi-directional support, we suggest the 74LVX245 as below which has strong output drive.
This breakout saves you from having to solder the very fine pitch packages that this chip comes with. We also add 0.1uF caps onto both sides and a 10K pull-up resistor on the output enable pin so you can use it right out of the box!
10. CHENBO 5 pcs I2C IIC 8 Channel Logic Level Converter Module 3.3V to 5V Bi-Directional Shifter Module for Arduino
Feature
Small size, 4.1 1.8cm/ 1.6 0.7inIt can bidirectionally transfer with 8 channels between high logic voltage and low logic voltage
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 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.
Description
Small size, 4.1 1.8cm/ 1.6 0.7in
It can bidirectionally transfer with 8 channels between high logic voltage and low logic voltage
Instruction:
Take the high voltage (5V) and low voltage (3,3V) for example.
5V connects to HV pin;
3.3V connects to LV pin;
Negative pole connects to GND pin.
Package Includes:
5 8 Channel Logic Level Converter Bi-directional 3.3V to 5V TTL Shifter Module
5 Single Row Pin Header(10 pins)