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Attention! Product replaced by a new version:Two-way, four-channel logical level converter - SparkFun. |
Product description:Logical level converter - SparkFun
The module allows for communication between systems using the two most popular voltage levels: 3.3V and 5V. It allows you to combine the popular communication interfaces: UART, SPI and I2C. The board dimensions are 13 x 15 mm.
The outputs are soldering fields, allowing to soldergoldpin connectors(raster 2.54 mm). Thanks to them it is possible to connect the circuit with acontactboardormain module (e.g. STM32Discovery orArduino) usingwires.
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The kit does not includegoldpin slats...can be purchased separately. |
Example of use
The converter is easy to use, for proper operation it is enough to connect the power supply of two systems to be converted. Higher voltage (e.g. 5 V) should be connected to the HV (high voltage) output, lower voltage (e.g. 3.3 V or 2.8 V) to LV (low voltage). Masses are connected to the outputs marked with GND. Logical signals should be led to appropriate TXI, RXI - inputs and TXO, RXO - outputs.
A 5 V logical one will be connected to the TX input on the 5 V (HV) side of the TXO output with a value of 3.3 V from the RXO output on the 3.3 V (LV) side. In the other side, the system works in the same way.
Useful links |
