1.Description:
I2C stands for Inter Integrated Circuit Communication and is suitable for short-range communication on PCBs or components. But hey, we're engineers and we like to push the limits of technology, right? So why not try running I2C on cables that are a meter long or even longer? Well, if you try to do this, you will soon find that the length of the cable increases capacitance and resistance, slowing down the open drain pull-up speed used in I2C, making it difficult to use 100KHz+clock speed. You can try slowing down the I2C clock to 1 KHz Alternatively, you can use an LTC4311 active terminator like this!
Using this board is simple: connect it to the I2C bus at the beginning of the chain (if you don't have a long cable, you can also try at the end of the chain). When the chip is powered on and enabled, it will monitor the SCL and SDA lines. When it sees them pulled up through the I2C resistor, it will activate and dump some current to boost them through the top power rail.
2.Feature:
1>.Improve I2C bus rise time conversion
2>.Ensure data integrity of multiple devices on the I2C bus.
3>.Wide power supply voltage range: 1.6V to 5.5V
4>.Improve low state noise tolerance
5>.Working frequency up to 400kHz
6>.Automatically detect low-power standby mode
7>.Low (
8>.Do not load bus when disabled or powered off
9>.Strong conversion limits pull-up current
3.Parameter:
1>.Work Voltage: DC 1.6V-5.5V
2>.Size: 25*18mm
4.Package:
1>.1pcs LTC4311 I2C Extender Active Terminator