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The RoHS icon on this product indicates that the PCBs, components, solder, and chemicals are all lead-free and RoHS compliant. Additionally, this product is produced using a lead-free process. Unfortunately, we are currently unable to provide documentation confirming that this product is RoHS compliant.
Resources:
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Package Includes:
This package does not include Din-Rail PCB holders and cables.
Notes:
- This board uses 5-pin connectors for I2C bus.
Features:
- PCF8574 I2C controller chip
- 100KHz I2C bus frequency
- On-board I2C bus pull-up resistors
- Addressable via 3 jumpers, allowing up to 8 addresses
- Supports up to 16 boards on a bus, (connected together with PCF8574A)
- Interrupt output signal
- On-board interrupt pull-up resistor
- Compatible with most microcontrollers
- 8 optically isolated digital input channels
- 15-30Vdc input voltage range
- 3700VDC isolation voltage
- Operating power supply voltage: 3.3-5.5Vdc
- Reverse polarity protection circuits
- Mountable on DIN-rail PCB holder
- PCB size: 42.5 x 72.0 mm
This is an 8-channel opto-isolator board designed for input expansion over the I2C bus. Each input accepts 15-30VDC, making it suitable for mechanical contact switching devices such as relays, buttons, and switches.
The board uses the PCF8574 I2C chip, supports a 100kHz bus speed, and operates with a bus voltage of 3.3-5.5VDC. It features three jumpers for setting its address, allowing up to 16 boards to be connected on a single bus. Additionally, the board includes I2C bus pull-up resistors and an interrupt pull-up resistor, which can be enabled via jumpers.
The board can be mounted on a DIN-rail PCB holder, which can be securely attached to a tray.
The difference between the I2C-IN830MxV2 and I2C-IN830MAxV2 lies in the I2C chip used. The I2C-IN830MxV2 uses the PCF8574, while the I2C-IN830MAxV2 uses the PCF8574A. The key distinction between the PCF8574 and PCF8574A is their I2C bus address.
To prevent damage to the board, do not plug or unplug I2C cables while the power supply is on. Always turn off the power supply before plugging or unplugging I2C cables on the board.
