TCA9546ADR - TI

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

Part No

TCA9546ADR
Manufacturer

TI
ChipWorker Part#

CW40140521
Category

Logic Controller, Logic IC
Package

SOIC-16
Description

1.65V to 5.5V 4Channel I2C and SMBus Switch With Reset Function 16-SOIC -40℃ to 85℃
Documentation

Datasheet

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TCA9546ADR Specifications

Attribute	Attribute Value

Part Number	TCA9546ADR
Manufacturer	TI
ChipWorker Part#	CW40140521
Category	Logic Controller, Logic IC
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	16 Pin
Case/Package	SOIC-16
Number of Outputs	4 Output
Number of Channels	4 Channel
Propagation Delay Max (tpd)	1.00 ns
Power Dissipation	0.4 W
Number of Inputs	4 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
ECCN Code	EAR99

Product Description

The TCA9546A is a quad bidirectional translating switch controlled via the I2C bus. The SCL/SDA upstream pair fans out to four downstream pairs, or channels. Any individual SCn/SDn channel or combination of channels can be selected, determined by the contents of the programmable control register.
An active-low reset (RESET) input allows the TCA9546A to recover from a situation in which one of the downstream I2C buses is stuck in a low state. Pulling RESET low resets the I2C 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 VCC pin can be used to limit the maximum high voltage, which will be passed by the TCA9546A. 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 pins are 5.5-V tolerant.

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