PCA9543A/PCA9543B/PCA9543C 2-channel I2C-bus Switch With Interrupt Logic And Reset

The PCA9543A PCA9543B/PCA9543C is a bidirectional translating Switch controlled by the I2C-bus. The SCL/SDA upstream pair fans out to two downstream pairs, or channels. Any individual SCx/SDx channels or combination of channels CAN be selected, determined by the contents of the programmable control Register Two interrupt inputs, INT0 and INT1, one for each of the downstream pairs, are provided. One interrupt output, INT, which acts as an AND of the two interrupt inputs, is provided. An active LOW reset input allows the PCA9543X 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 PCA9543X. This allows the use of different bus voltages on each SCx/SDx pair, so that 1.8 V, 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. The PCA9543A PCA9543B and PCA9543C are identical except for the fixed portion of the slave address.
By NXP Semiconductors
Part Manufacturer Description Datasheet Samples
PCA9543ADRG4 Texas Instruments Two-Channel I2C-Bus Switch With Interrupt Logic and Reset 14-SOIC -40 to 85
PCA9543ADR Texas Instruments Two-Channel I2C-Bus Switch With Interrupt Logic and Reset 14-SOIC -40 to 85
PCA9543AD Texas Instruments Two-Channel I2C-Bus Switch With Interrupt Logic and Reset 14-SOIC -40 to 85
PCA9543APWR Texas Instruments Two-Channel I2C-Bus Switch With Interrupt Logic and Reset 14-TSSOP -40 to 85
PCA9543ADG4 Texas Instruments Two-Channel I2C-Bus Switch With Interrupt Logic and Reset 14-SOIC -40 to 85
PCA9543APWG4 Texas Instruments Two-Channel I2C-Bus Switch With Interrupt Logic and Reset 14-TSSOP -40 to 85
PCA9543APW Texas Instruments Two-Channel I2C-Bus Switch With Interrupt Logic and Reset 14-TSSOP -40 to 85
PCA9543APWRG4 Texas Instruments Two-Channel I2C-Bus Switch With Interrupt Logic and Reset 14-TSSOP -40 to 85
PCA9543A 's PackagesPCA9543A 's pdf datasheet
PCA9543AD SO
PCA9543APW TSSOP
PCA9543BPW TSSOP
PCA9543CPW TSSOP

PCA9543A pdf datasheet download


PCA9543A Pinout, Pinouts
PCA9543A pinout,Pin out
This is one package pinout of PCA9543A,If you need more pinouts please download PCA9543A's pdf datasheet.

PCA9543A Application circuits
PCA9543A circuits
This is one application circuit of PCA9543A,If you need more circuits,please download PCA9543A's pdf datasheet.


Related Electronics Part Number

Related Keywords:

PCA9543A Pb-Free PCA9543A Cross Reference PCA9543A Schematic PCA9543A Distributor
PCA9543A Application Notes PCA9543A RoHS PCA9543A Circuits PCA9543A footprint
Hot categories