TCA9543APWR - TI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

TCA9543APWR
Manufacturer

TI
ChipWorker Part#

CW4678963
Category

Logic Controller, Logic IC
Package

TSSOP-14
Description

2Channel I2C Bus Switch With Interrupt Logic and Reset 14-TSSOP -40℃ to 85℃
Documentation

Datasheet

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TCA9543APWR Specifications

Attribute	Attribute Value

Part Number	TCA9543APWR
Manufacturer	TI
ChipWorker Part#	CW4678963
Category	Logic Controller, Logic IC
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	14 Pin
Case/Package	TSSOP-14
Number of Outputs	2 Output
Number of Channels	2 Channel
Propagation Delay Max (tpd)	1.00 ns
Power Dissipation	0.4 W
Number of Inputs	2 Input
Operating Temperature (Max)	85 ℃
Operating Temperature (Min)	-40 ℃
Power Dissipation (Max)	400 mW
Supply Voltage	1.65V ~ 5.5V
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Operating Temperature	-40℃ ~ 85℃
Product Lifecycle Status	Active
Packaging	Tape & Reel (TR)
RoHS	RoHS Compliant
Lead-Free Status	Lead Free

Product Description

The TCA9543A is a dual bidirectional translating switch controlled by the I2C bus. The SCL/SDA upstream pair fans out to two downstream pairs, or channels. Either individual SCn/SDn channel or both channels can be selected, determined by the contents of the programmable control register. Two interrupt inputs (INT1–INT0), one for each of the downstream pairs, are provided. One interrupt output (INT) acts as an AND of the two interrupt inputs.
An active-low reset (RESET) input allows the TCA9543A to recover from a situation where one of the downstream I2C buses is stuck in a low state. Pulling RESET low resets the I2C state machine and causes both of the channels to be deselected, as does the internal power-on reset function.
The pass gates of the switches are constructed such that the VCC terminal can be used to limit the maximum high voltage, which will be passed by the TCA9543A. This allows the use of different bus voltages on each 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 terminals are 5.5-V tolerant.

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