TCA9548AMRGER - TI

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

Part No

TCA9548AMRGER
Manufacturer

TI
ChipWorker Part#

CW11190685
Category

Logic Controller, Logic IC
Package

VQFN-24
Description

I2C Multiplexer 1Element 8IN 24Pin VQFN EP T/R
Documentation

Datasheet

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TCA9548AMRGER Specifications

Attribute	Attribute Value

Part Number	TCA9548AMRGER
Manufacturer	TI
ChipWorker Part#	CW11190685
Category	Logic Controller, Logic IC
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	24 Pin
Case/Package	VQFN-24
Supply Voltage (DC)	1.65V (min)
Number of Outputs	1 Output
Number of Bits	8 Bit
Propagation Delay Max (tpd)	1.00 ns
Number of Inputs	8 Input
Operating Temperature (Max)	85 ℃
Operating Temperature (Min)	-40 ℃
Supply Voltage	1.65V ~ 5.5V
Supply Voltage (Max)	5.5 V
Supply Voltage (Min)	1.65 V
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Operating Temperature	-40℃ ~ 85℃
Product Lifecycle Status	Active
Packaging	Cut Tape (CT)
RoHS	RoHS Compliant
Lead-Free Status
REACH SVHC Compliance Edition	2016/06/20
ECCN Code	EAR99

Product Description

The TCA9548A device has eight bidirectional translating switches that can be controlled through the I2C bus. The SCL/SDA upstream pair fans out to eight 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. These downstream channels can be used to resolve I2C slave address conflicts. For example, if eight identical digital temperature sensors are needed in the application, one sensor can be connected at each channel: 0–7.
The system master can reset the TCA9548A in the event of a time-out or other improper operation by asserting a low in the RESET input. Similarly, the power-on reset deselects all channels and initializes the I2C/SMBus state machine. Asserting RESET causes the same reset and initialization to occur without powering down the part. This allows recovery should one of the downstream I2C buses get stuck in a low state.
The pass gates of the switches are constructed so that the VCC pin can be used to limit the maximum high voltage, which is passed by the TCA9548A. Limiting the maximum high voltage 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 pullup resistors pull the bus up to the desired voltage level for each channel. All I/O pins are 5-V tolerant.

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