Over 500,000 customers already trust us. With us you get:
same-day shipping for products marked “24h shipping”
our own service centre in Poland
30 days to return and free delivery in Poland from PLN 500
4.9/5 on TrustMate and 4.9/5 on Google (almost 4,000 reviews)
VAT invoice, leasing and instalments for businesses
For businesses
individual quote for larger quantities
VAT invoice
For schools and universities
orders based on requests for quotation
help with choosing kits for your lab
Send an inquiry - we reply quickly.
IO expander - 4 channel - with I2C multiplexer - PCA9546 - STEMMA QT / Qwiic - Adafruit 5664
Module with a multiplexer manufactured by Adafruit and equipped with the PCA9546 chip, which is a replacement for the popular TCA9548A chip. The module allows you to connect up to 4 separate I2C digital buses to one microcontroller interface. The I2C bus address occupied by the multiplexer is 0x70 , it can also be configured in the range from 0x70 to 0x77 using jumpers located at the back of the module. The pinouts are STEMMA QT/Qwiic connectors, evenly spaced on both sides of the board.
We could not load the price.
The promotional price does not combine with quantity discounts.
Product description: IO expander - 4-channel - with I2C multiplexer - PCA9546 - STEMMA QT / Qwiic - Adafruit 5664
Module with a multiplexer manufactured by Adafruit and equipped with the PCA9546 chip, which is a replacement for the popular TCA9548A chip. The module allows you to connect up to 4 separate I2C digital buses to one microcontroller interface. The I2C bus address occupied by the multiplexer is 0x70 , it can also be configured in the range from 0x70 to 0x77 using jumpers located at the back of the module. The pinouts are STEMMA QT/Qwiic connectors, evenly spaced on both sides of the board.
IO expander - 4-channel - with I2C multiplexer - PCA9546 - STEMMA QT / Qwiic - Adafruit 5664.
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.
Example connection diagram. The subject of the sale is only the pin expander - Raspberry Pi, cables and peripherals must be purchased separately.
Connection diagram and pin description
The pins of the module are STEMMA QT / Qwiic connectors that allow quick connection to peripheral devices without the need for soldering. Connect the pins according to the relations below:
- VIN - 3 V power pin (red wire)
- GND - system ground (black wire)
- SCL - clock line of the I2C bus (yellow wire)
- SDA - I2C bus data line (blue wire)
Product compatible with Arduino and Raspberry Pi!
The manufacturer has prepared a user's guide , which contains a detailed description of the pins and sample program code - check it out!
Module technical specification
- Type: IO expander with multiplexer
- Built-in chip: PCA9546
- Number of channels: 4
- Communication interface: I2C bus
- Bus address: 0x70, adjustable from 0x70 to 0x77
- Supply voltage: 3 V to 5 V or 3 V / 500 mA
- Pins: STEMMA QT/Qwiic connectors
- Board dimensions: 25.3 x 20.3 x 4.8 mm
- Weight: 2.5g
Kit contents
- Lead expander - 4-channel - with I2C multiplexer - PCA9546 - STEMMA QT / Qwiic
- Goldpin strip 1x6 - raster 2.54 mm
Components included in the set.
Useful links
| Name | Value |
|---|---|
| Channels | 4 |
| Interface | I2C |
| Sensor - type | multiplexer |
| Width | 7.5 cm |
| Height | 11.5 cm |
| Depth | 1 cm |
| Weight | 0.004 kg |
GLS
Shipping in 24 hours
from €8.07
Raben - pallet delivery
Delivery in 3–5 days, no inside delivery
from €96.75
The full delivery terms are on the page Delivery and payment.
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).
Complaints
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.
Be the first to ask a question about this product!
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.
Products from the same category
See all
