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IoT Wireless TVOC CO2eq Temperature Humidity Gas Sensor — IoT Wireless TVOC CO2eq Temperature Humidity Gas Sensor 5V 5W AC/DC USB External Wall Mount Adapter – 90 ~ 264 VAC to 5V DC at 1A 5V 5W AC/DC USB External Wall Mount Adapter – 90 ~ 264 VAC to 5V DC at 1A —

PCA9547 8-Channel I2C-Bus Multiplexer with Reset with I2C Interface

$ 38.95

Features

  • I2C 8 Channel Multiplexer
  • 3 Address Pins Allowing Up to 8 Devices on the I2C Bus
  • No Glitch on Power Up
  • 0 Hz to 400 kHz Clock Frequency
  • High Power I2C Multiplexer Max Current up to 6 Amp
  • 0x70 I2C Start Address

This I2C Multiplexer is an ideal solution for speaking to our entire range of Mini Modules and I2C devices, effectively converting a single I2C port into 8 I2C ports. On-board high-power driver is capable of delivering up to 5 Amps of current to be shared across all 8 I2C ports.  This device offers enough current drive several of our spotlight I2C mini modules with no problem.  Gas sensors also require a tremendous amount of current, making this a necessary add-on for many applications.

The PCA9547 is an octal bidirectional translation multiplexer controlled by the I2C-bus.  The SCL/SDA upstream pair fans out to eight downstream pairs, or channels. The device powers up with Channel 0 connected, allowing immediate communication between the master and downstream devices on that channel. An active LOW reset input allows the PCA9547 to recover from a situation where one of the downstream I2C-buses is stuck in a LOW state.

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