TCA9548APWR Semiconductors - ICs by Texas Instruments

I2C SWITCH W/ RESET 8-CH TSSOP-24

Status: Unknown
Series: -
RoHS: Unknown
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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, 2.5V 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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Prices starting from US$0.48

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Texas Instruments
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Newark Electronics
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element14
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Specifications

IC Interface Type I2C SMBus
Interface Applications Factory Automation Products with I2C Slave Address Conflicts Routers Servers
Supply Voltage Min 1.65V
Supply Voltage Max 5.5V
Interface Case Style TSSOP
No. of Pins 24Pins
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
MSL MSL 1 - Unlimited
SVHC No SVHC (27-Jun-2018)
RoHS Phthalates Compliant Yes

Alternative Descriptions

8-channel 1.65- to 5.5-V I2C/SMBus switch with reset & voltage translation | Texas Instruments
I2C Switch W/ Reset, 8-Ch, Tssop-24 | Newark Electronics
I2C SWITCH W/ RESET, 8-CH, TSSOP-24 | element14


Frequently Asked Questions

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Additional datasheets, footprints and schematics for TCA9548APWR are listed on our Part Details page. You can also find images and similar parts to TCA9548APWR on this page.

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What category does TCA9548APWR fall under?

The TCA9548APWR is listed under Electronic & Electrical Components > Semiconductors - ICs > Driver & Interface ICs.

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Is the TCA9548APWR RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for TCA9548APWR have stock available?

Authorised distributors including Texas Instruments, Chip One Stop, Newark Electronics, element14 and Farnell have stock available or on a lead time for TCA9548APWR.

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