I2C to 8 Bit Parallel IO Expander PCF8574 – Cascadable


Need more than we have? Order now, we will ship when back in stock. Lead time about 2-3 weeks.
See our backorder policy.
Availability: In stock (can be backordered) SKU: 26610
Quantity 3 - 9 $3.42
Quantity 10 - 24 $3.28
Quantity 25 + $3.17


A maximum of 8 of these modules can be daisy-chained to a maximum of 64 digital IO.

8 different I2C addresses can be selected after a small modification:
The I2C address on these modules is fixed by default, but it can be changed by cutting the 3 short traces shown in the picture and adding jumper caps instead.

The modules contain 10k pull-up resistors for the I2C bus. Please understand that these resistors will be connected in parallel when you cascade multiple modules.

The library for Arduino is available.

Supply voltage: 2.5 – 6V
Max. combined current: 100mA
Output current source: 1mA max.
Output current sink: 25mA max.

Additional information

Weight 0.01 kg
Dimensions 20 × 20 × 10 mm







There are no reviews yet.

Be the first to review “I2C to 8 Bit Parallel IO Expander PCF8574 – Cascadable”