Qwiic Mux PCA9846
Connect multiple I2C devices with the same address by routing them through four multiplexed ports, supports up to 32 buses, and features a device ID register for easy detection—perfect for advanced Qwiic setups.
Product Overview
Do you have too many sensors with the same I2C address? Connect them to the SparkX PCA9846 Qwiic Mux to get them all talking on the same bus! This Qwiic Mux enables communication with multiple I2C devices that have the same address. This Qwiic Mux also has eight configurable addresses of its own, allowing for up to 32 I2C buses on a single connection. To make it even easier to use this multiplexer, all communication is enacted exclusively via I2C, utilizing our handy Qwiic system.
The PCA9846 Qwiic Mux is very similar to our classic 8-channel Qwiic Mux, except:
- It has four multiplexed Qwiic ports, plus Qwiic Main In and Out connections, on a super-cute 1" x 1" PCB
- The PCA9846 has a "Who Am I" (Device ID) product identification register which makes it much easier to detect in auto-detect DataLogger / OpenLog applications.
We've written a dedicated Arduino Library for the PCA9846 to get you up and running as qwiicly as possible!
Features & Specs
- 1" x 1" PCB with standoff mounting holes
- Main In and Out Qwiic connections
- Four multiplexed Qwiic ports (0-3)
- Configurable I2C address:
- 0x70 - 0x77 (unshifted)
- Default 0x70
- See Address Configuration for details
- Supports both 100kHz and 400kHz clock speeds
- 0.1"-spaced breakout holes for Power, I2C and Reset
- Power LED (configurable)
- Full set of 2.2K pull-up resistors (configurable)
- "Who Am I" (Device ID) identification
- Supply voltage:
- 1.65V (Min)
- 3.3V (Max)
- Note: Qwiic operates at 3.3V only
Customer Reviews
