A variety of currently used components and the digital technology of their performance is forcing designers need to work on different power supply voltage levels. However, even if the power supply circuit devices provide everything necessary for the correct functioning of the section, it does not mean that the system will work correctly. You must still correctly selected the voltage converters that provide the appropriate voltage levels of digital signals by individual IP.
The module allows for two-way communication between systems that use different voltage levels for I2C bus and SMBus. PCA9306 converts the voltages out of the range of lower from 1.0 V to 3.6 V to higher from 1.8 V to 5.5 V.
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 automatically detects the direction of transmission.
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 provide support for the interfaces: I2C, SPI, UART.
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. It works in both directions with automatic detection. It has four channels.
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. It has four channels. This kit includes the goldpin connectors for self-soldering.
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 12.9 V and from 1.0 V to 43 V. The output voltage has a value from 0 to 5 V and is proportional to the input voltage.
Systems theory in the field of digital methods of presentation state logic is extremely simple. In the most frequently used so-called positive logic – zero-low (L), and the voltage equal to the supply voltage (e.g., 3.3 V or 5 V) corresponds to a logical unit, i.e. a high (H). Enough of the theory; the practice, as usual, because much more complex. Each layout digital actually interpreterpath input voltage, arranged in a particular manufacturer's range, with the output signals, which under normal use should not go beyond a certain narrow range. However, if one layout (e.g., microcontroller) power supply would be 5V, and the second to 3.3 V is required use a voltage Converter (also called inverter logic levels), which not only provide reliable communication between the individual systems, but will also provide schemes with a low voltage supply from possible damage due to too high input voltage.
Significant division of the voltage converters is based on which (how many) directions, these items can transmit digital signals. Many converters transmits digital signals only in a particular direction, although some designs can work properly regardless of which way information is transmitted (i.e. which system is the transmitter and the receiver). So work, among other things, a very simple but highly efficient voltage converters on the construction based on transistors TRANSISTORS low power. In addition to the work key any Converter parameters are: the number of channels, the allowable voltage levels on both sides, as well as the maximum frequency of transmitted signals and, in some cases, the time of the distribution (i.e. the delay between a change in the output signal relative to the corresponding change in input).
In this category you will find a number of very useful modules that are ideal for using in the circuits of the prototype, as in the target solutions. All voltage converters available in universal modules with easy connectors goldpin (wlutowanymi or designed for self-Assembly) and ready to use complete with wires connection, available in our store in practical sets. In addition to the converters designed to work with digital outputs and inputs, and we also have specialized modules that allow you to communicate with I2C. These modules (for example, PCA9306) take into account the specifics of the physical layer of the I2C interface and ensure a stable cooperation models of different supply voltages.