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Is there a 4 channel I2C logic level converter?
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.
Do you need level shifting devices for I2C?
Since the I2C bus lines are used bidirectionally, interfacing I2C devices with different voltages is not straightforward, special level-shifting devices are necessary for this purpose. Things to consider when working with low voltage I2C systems.
What happens if I power a microcontroller at 3.3V?
If I communicate with a sensor from a microcontroller with 3.3V logic level I2C lines, but I power that sensor at 1.8V, am I in for big trouble (permanent damage to the device, inability to communicate)? Yes, you will almost certainly run into problems. From your datasheet:
What’s the voltage level of an IO expander?
Apart from the bus speed more and more circuitry is moving to 3.3V or even 1.8V and below logic levels. An example is NXP’s IO expander PCA9554C.
What is level shifting in logic level converter?
This is called logic level shifting. Level shifting is a dilemma so common we designed a simple PCB assembly to make interfacing devices a little easier: the Bi-Directional Logic Level Converter.
Is the dip 74lvc245 compatible with I2C?
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.
How many pins can a level converter convert?
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.