PCA9548A 8-channel I2C-bus Switch With Reset

The PCA9548A is an octal bidirectional translating Switch controlled via the I2C-bus. The SCL/SDA upstream pair fans out to eight downstream pairs, or channels. Any individual SCx/SDx channel or combination of channels CAN be selected, determined by the contents of the programmable control Register An active LOW reset input allows the PCA9548A to recover from a situation where one of the downstream I2C-buses is stuck in a LOW state. Pulling the RESET pin LOW resets the I2C-bus state machine and causes all the channels to be deselected as does the internal Power-on reset function. The pass Gates of the switches are constructed such that the VDD pin CAN be used to limit the maximum high voltage which will be passed by the PCA9548A. This allows the use of different bus voltages on each pair, so that 1.8 V or 2.5 V or 3.3 V parts CAN communicate with 5 V parts without any additional protection. External pull-up resistors pull the bus up to the desired voltage level for each channel. All I/O pins are 5 V tolerant.
By NXP Semiconductors
Part Manufacturer Description Datasheet Samples
PCA9548ADWR Texas Instruments 8-Channel I2C Switch With Reset 24-SOIC -40 to 85
PCA9548ADW Texas Instruments 8-Channel I2C Switch With Reset 24-SOIC -40 to 85
PCA9548ADWG4 Texas Instruments 8-Channel I2C Switch With Reset 24-SOIC -40 to 85
PCA9548ADB Texas Instruments 8-Channel I2C Switch With Reset 24-SSOP -40 to 85
PCA9548APW Texas Instruments 8-Channel I2C Switch With Reset 24-TSSOP -40 to 85
PCA9548ADGV Texas Instruments 8-Channel I2C Switch With Reset 24-TVSOP -40 to 85
PCA9548APWRG4 Texas Instruments 8-Channel I2C Switch With Reset 24-TSSOP -40 to 85
PCA9548ADBR Texas Instruments 8-Channel I2C Switch With Reset 24-SSOP -40 to 85
PCA9548APWR Texas Instruments 8-Channel I2C Switch With Reset 24-TSSOP -40 to 85
PCA9548ADGVR Texas Instruments 8-Channel I2C Switch With Reset 24-TVSOP -40 to 85
PCA9548A 's PackagesPCA9548A 's pdf datasheet
PCA9548ABS HVQFN
PCA9548AD SO
PCA9548APW TSSOP




PCA9548A Pinout, Pinouts
PCA9548A pinout,Pin out
This is one package pinout of PCA9548A,If you need more pinouts please download PCA9548A's pdf datasheet.

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