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eXTReMe Tracker 1PC TCA9548A 1to8 I2C 8-channel IIC expansion board module development board
Posted in: Specs | by Brian Taylor | 2020 Feb 04
The TCA9548A is
Origin: China
Delivery: 01-24, 03-06
datepaid: 2020-02-04
Received: 2020-02-xx
Quantity: 1pcs
Price: 1.99
Shipping: 0.00
Total: 1.99
a 1to8 (8-channel) i2c expansion board allowing you to use multiple devices that share the same i2c address.

This device is on i2c address: 0x70

Finally, a way to get up to 8 same-address I2C devices hooked up to one microcontroller - this multiplexer acts as a gatekeeper, shuttling the commands to the selected set of I2C pins with your command.

Using it is fairly straight-forward: the multiplexer itself is on I2C address 0x70 (but can be adjusted from 0x70 to 0x77) and you simply write a single byte with the desired multiplexed output number to that port, and bam - any future I2C packets will get sent to that port. In theory, you could have 8 of these multiplexers on each of 0x70-0x77 addresses in order to control 64 of the same-I2C-addressed-part.

Like all Adafruit breakouts, we put this nice chip on a breakout for you so you can use it on a breadboard with capacitors, and pullups and pulldowns to make usage a snap. Some header is required and once soldered in you can plug it into a solderless-breadboard. The chip itself is 3V and 5V compliant so you can use it with any logic level.

Package Included: 1
Original article eBay Item: 303412814136

eBay Item: 303412814136


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