The diversity of the currently used types of digital circuits and their manufacturing technology force the designers to work on various supply voltage levels. However, even if power supply circuits of a device make available all power sections necessary for its proper work, it does not mean that the system will work correctly. Properly selected voltage converters are still needed to ensure appropriate voltage levels of digital signals accepted by individual ICs.
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Mini Button - Unit expansion module for development modules M5Stack
Index: MSS-18066
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Step-Down Voltage Regulator D24V3F12 - 12V 0,3A - Pololu 2100
Index: PLL-01351
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Products: 16
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Logic level converter 3,3V / 5V - UART - Iduino ST1167
The module allows to exchange data between systems that use two popular voltages: 3.3 V and 5 V Ensures the connection of the UART interface.
Index: OST-14271
Index: OST-14271
4-channel logic level converter
The module allows to exchange data between systems that use the most popular levels of voltage: 5 V <-> 3.3 V and 3.3 V <-> 1,8 V. It works in both directions simulatneously....
Index: MSX-06117
Index: MSX-06117
Logic level bi-directional converter, 4-channel - SparkFun BOB-12009
The module allows to exchange data between systems that use the most popular voltages levels: 5 V and 3.3 V and 1.8 V and 2.8 V. Works in both directions simultaneously. It has...
Index: SPF-02259
Index: SPF-02259
Logic level bi-directional converter, 4-channel - Pololu 2595
Miniature (13 x 10 mm). the module allows to exchange data between systems that use the most popular voltage levels ranging from 1.5 V to 18 V and Vice versa. Four channels to...
Index: PLL-02523
Index: PLL-02523
Logic level converter 3,3V / 5V - I2C UART SPI
The module allows to exchange data between systems that use two popular voltages: 3.3 V and 5 V. It provides connection of interfaces: UART, SPI and I2C.
Index: MOD-01513
Index: MOD-01513
Logic level converter I2C PCA9306 - SparkFun BOB-15439
The module allows bidirectional communication between circuits using different voltage levels for I2C and SMBus. PCA9306 converts voltages from lower range from 1.2 V to 3.3 V...
Index: SPF-01709
Index: SPF-01709
Logic level transmitter TXB0104 bi-directional, 4-channel - SparkFun BOB-11771
The module allows to exchange the data between systems that use the most popular voltage levels: from 1.2 V to 3.6 V for VCCA inputs, and from 1.65 V to 5.5 V for VCCB inputs....
Index: SPF-04290
Index: SPF-04290
Qwiic - adapter 1,8V - SparkFun SPX-19017
A voltage adapter that allows you to adjust the voltage of 1.8 V to the 3.3 V level used in the Qwiic system. The module is used when the user has to connect an element with...
Index: SPF-21115
Index: SPF-21115
DFRobot Gravity - analog signal isolator
The module prevents the operation interference of the sensors through the insulation of the analog signal and providing an isolated power for sensors. It is supplied with the...
Index: DFR-09529
Index: DFR-09529
Voltage converter 3-5.5V to 3.3V 2A - TPS62827 - Adafruit 4920
Voltage converter equipped with TPS62827 chip. It allows to obtain from input voltage in the range of 3 V to 5.5 V an output value of 3 .3 V with a current of 2 A . It...
Index: ADA-19251
Index: ADA-19251
8-channel bi-directional logic level converter
The module allows you to exchange data between systems that use the most popular voltages: from 3.3 V to 5.5 V and vice versa. Eight channels allow for connection of various...
Index: MOD-08590
Index: MOD-08590
Pixel Boost module - 3.3V / 5V voltage buffer for WS2812B diodes
The module is used to control the WS2812B LEDs, in the case of a microcontroller running on voltage 3.3 V. It includes a buffer that allows you to convert voltages. Module...
Index: MSX-08790
Index: MSX-08790
TLV62569 - converter breakout 5,5V/3,3V 1,2A - Adafruit 4711
The converter is based on the TLV62569 chip . Enables you to get output voltage of 3.3 V. Input voltage range: 2.5 V to 5.5 V. It provides a continuous load current of...
Index: ADA-21829
Index: ADA-21829
SparkFun Level Shifter is an 8-channel, bidirectional logic level translator equipped with the TXS0108E chip from Texas Instruments. It allows you to switch logic...
Index: SPF-21561
Index: SPF-21561
TXB0108 - two-way, 8-channel logic converter - Adafruit 395
The module is based on a TXB0108 system, it allows you to exchange data between systems that use the most popular voltage levels: 3.3 V and 5V. It has eight channels, it...
Index: ADA-02468
Index: ADA-02468
Grove - voltage divider 5V/43V
A voltage divider is used, when the measured voltage has a larger value than the AC converter range. The device operates in two ranges, selectable with a switch: from 0.3 V to...
Index: SEE-04428
Index: SEE-04428
Logical levels, or 1 isn't equal 1
The theory of digital circuits in terms of methods of representation of logical states is trivially simple. In the most commonly used so called positive logic - zero means low state (L), while the voltage equal to supply voltage (e.g. 3.3 V or 5 V) corresponds to logic one, i.e. high state (H). So much theory; practice, as usual, is much more complex. Every digital circuit correctly interprets the input voltages within the range specified by the manufacturer, and the same is true of the output signals, which during normal operation cannot exceed a certain narrow range. However, if one circuit (e.g. microcontroller) would be supplied with 5 V, and the other with 3.3 V - it is necessary to use a voltage converter (also called a logic level converter), which will not only ensure proper communication between particular circuits, but also protect lower voltage circuits from potential damage by too high input voltages.
Types and parameters of converters levels of logical
The basic division of voltage converters is based on in which (how many) directions these components can transmit digital signals. Many converters transmit digital signals only in a specific direction, although some designs are able to work correctly regardless of which way the information is transmitted (i.e. which circuit is the transmitter and which the receiver). This is how, among others, very simple but highly efficient voltage converters with a design based on low-power MOSFETs work. Apart from the direction of operation, the key parameters of each converter are: the number of channels, acceptable voltage levels on both sides, as well as the maximum frequency of transmitted signals and - in some cases - propagation times (i.e. the delay between a change in the signal at the output in relation to the corresponding change in the input of a given channel).
Voltage converters at Botland store
In this category you will find a range of very useful modules, perfect for use both in prototype circuits and target solutions. All voltage converters are offered as universal modules with convenient goldpin connectors (soldered or self-assembled) - and ready to use with connecting cables, available in our shop in practical kits. Apart from converters designed to work with digital outputs and inputs, we also have specialised modules allowing I2C communication. These modules (e.g. PCA9306) take into account the specifics of the physical layer of the I2C interface and enable seamless, stable cooperation of systems with different supply voltages.