PCA9549 Octal Bus Switch With Individually I2C-bus Controlled Enables

The PCA9549 provides eight bits of high speed TTL-compatible bus switching controlled by the I2C-bus. The low ON-state resistance of the Switch allows connections to be made with minimal propagation delay. Any individual A to B channel or combination of channels CAN be selected via the I2C-bus, determined by the contents of the programmable Control Register When the I2-bus bit is HIGH (logic 1), the Switch is on and data CAN flow from Port A to Port B, or vice versa. When the I2C-bus bit is LOW (logic 0), the Switch is open, creating a high-impedance state between the two ports, which stops the data flow. An active LOW reset input (RESET) allows the PCA9549 to recover from a situation where the I2C-bus is stuck in a LOW state. Pulling the RESET pin LOW resets the I2C-bus state machine and causes all the bits to be open, as does the internal power-on reset function. Three address pins allow up to eight devices on the same bus.
By NXP Semiconductors
PCA9549 's PackagesPCA9549 's pdf datasheet
PCA9549BS HVQFN
PCA9549D SO
PCA9549PW TSSOP




PCA9549 Pinout, Pinouts
PCA9549 pinout,Pin out
This is one package pinout of PCA9549,If you need more pinouts please download PCA9549's pdf datasheet.

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