With the I2C output card 8 digital loads can be switched.
The output driver turns UDN2981 a positive voltage up to 30V.
With the I2C output card 8 digital loads can be switched. The output driver UDN2981 turns a positive voltage up to 30V.
The signal states are displayed on eight low-current LEDs.
The circuit uses negative logic because the I2C Port Expander module PCF8574 by switches on all outputs at voltage.
When controlling only the desired bit pattern must be inverted. Or subtracting from 255 the desired output value before it is transferred to the output card.
Size of the circuit board 42 mm x 63 mm
For more information about this product can be found on the product page i2c-ouput-modul.
| 1 | circuit board I2HA_LP lead-free tinned with solder resist |
| 1 | Resistor network 8x 1,5k |
| 8 | LED 3mm 2mA green |
| 2 | Ceramic Capacitor 100 nF |
| 1 | PCF8574P oder PCF8574A + IC socket 16 pin |
| 1 | 74AC540N + IC-socket 20 pin |
| 1 | UDN2981A Darlington-Array + IC-socket 18 pin |
| 3 | pin connectors 3 pol and Jumper |
| 1 | terminal 4 pol. |
| 1 | terminal 10 pol. |
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