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PCF8574 - GPIO pin expander - I2C - STEMMA QT / Qwiic - Adafruit 5545
A lead expander by Adafruit equipped with the PCF8574 chip. It has 8 analog I / O GPIO pins , thanks to which it increases the design possibilities of the modules used. It communicates via the I2C bus, has 3 configurable interface addresses. The expander supply voltage is in the range from 3 V to 5 V DC .
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Product description: PCF8574 - GPIO pins expander - I2C - STEMMA QT / Qwiic - Adafruit 5545
A lead expander by Adafruit equipped with the PCF8574 chip. It has 8 analog I / O GPIO pins , thanks to which it increases the design possibilities of the modules used. It communicates via the I2C bus, has 3 configurable interface addresses. The expander supply voltage is in the range from 3 V to 5 V DC . There are two STEMMA QT / Qwiic connectors and solder pads on the board, to which the goldpin strip should be soldered.
Also check the manufacturer 's user guide .
The set also includes a goldpin strip with a pitch of 2.54 mm.
Botland is an official distributor of Adafruit electronics. These dependable American solutions cover sensors, controllers, Arduino shields, educational systems, smart building and a wide range of accessories. The Botland range holds original Adafruit products only.
PCF8574 - GPIO pins expander - I2C - STEMMA QT / Qwiic - Adafruit 5545.
STEMMA QT connector
The expander is equipped with two STEMMA QT connectors, located on the board edges. This standard increases the possibilities of prototyping, significantly speeds up the process of connecting with development boards and a wide range of other sensors. All this is done without the need for soldering and only with the use of a suitable cable.
Pinout description
- VIN - power pin from 3 V to 5 V DC
- GND - the ground of the system
- SCL - clock line of the I2C bus
- SDA - data line of the I2C bus
- P0 - P7 - analog I / O
- INT - IRQ output pin
In the user guide you will also find the wiring diagram and libraries for Arduino and Raspberry Pi .
Technical specification of the module
- Type: GPIO pins expander
- Built-in chip: PCF8574
- Number of I / O: 8
- Communication interface: I2C bus
- Interface address: 0x20
- Supply voltage: 3 V to 5 V DC
- Conclusions:
- STEMMA QT / Qwiic connectors
- solder pads (goldpin connectors for self-soldering are included in the set)
- Module dimensions: 25.5 x 17.7 x 4.6 mm
- Weight: 1.7 g
Kit contents
- PCF8574 - GPIO pins expander - I2C - STEMMA QT / Qwiic - 1 piece
- Goldpin strip 1x16 pin - 2.54 mm raster - 1 piece
PCF8574 - GPIO pins expander from Adafruit.
Useful links
| Name | Value |
|---|---|
| Lead | 8 |
| Interface | I2C |
| Width | 8 cm |
| Height | 9 cm |
| Depth | 1 cm |
| Weight | 0.004 kg |
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30 days to return, without giving a reason
If the product does not meet your expectations, you have 30 days from receiving the parcel to withdraw from the contract. The product only has to be complete. The right of return belongs to consumers (a purchase unrelated to business activity).
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If the product turns out to be faulty, you can make a claim under the guarantee or the statutory warranty. We handle claims without delay, at the latest within 14 working days of receiving the report together with the goods.
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Instructions and documents
GPSR data
Product information
This product is a component intended for further assembly or prototyping. It is not a finished product within the meaning of the product safety regulations.
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