TCA9548A The Texas Instruments TCA9548A is an 8-channel I2C/SMBus switch designed for efficient signal routing and voltage translation. It operates across a wide supply voltage range.
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TCA9548A

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments TCA9548A is an 8-channel I2C/SMBus switch designed for efficient signal routing and voltage translation. It operates across a wide supply voltage range.
✓ Total Stock: 72,320 pcs
$ Price Range: $0.99

TCA9548A Available from 1 distributor

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✓ Non-Authorised
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TCA9548A Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
ESD Protection
Latch-up Performance
Mounting Type
Number of Channels
Operating Temperature Range

TCA9548A Description

Short technical summary and product information.

The Texas Instruments TCA9548A is an active 8-channel bidirectional translating switch that operates over a power-supply voltage range of 1.65V to 5.5V. It is compatible with I2C Bus and SMBus protocols and supports clock frequencies up to 400kHz.

 

This switch features an active-low reset input and three address pins, allowing up to eight TCA9548A devices to be connected on the same I2C bus. Channel selection is managed through the I2C bus, with all switch channels deselected upon power-up. The device supports voltage-level translation between 1.8V, 2.5V, 3.3V, and 5V buses, offering flexibility in mixed-voltage environments. It also includes features like no glitch on power-up and support for hot insertion.

 

The TCA9548A is available in TSSOP, VQFN, and VSSOP packages, suitable for surface mount applications. Its operating temperature range is -40°C to 85°C. The device exhibits low RON switches and low standby current, making it an efficient choice for various interface applications.

TCA9548A Quick Information

Product Type: I2C/SMBus Switch
Canonical Name: TCA9548A 8-Channel I2C/SMBus Switch
Subcategory: I2C Switches & Multiplexers

TCA9548A Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

TCA9548A Estimated Pricing

Qty Low High
1+ $0.99 $0.99

Estimated market price range - modelled values for guidance only, not live distributor offers.

TCA9548A Features

  • 8-channel bidirectional translating switches.
  • I2C Bus and SMBus compatible.
  • Supports voltage-level translation.
  • Operates from 1.65V to 5.5V.
  • 400kHz maximum clock frequency.

TCA9548A Applications

  • I2C bus expansion.
  • SMBus communication.
  • Voltage level translation.
  • Mixed-voltage systems.

TCA9548A FAQs

7 frequently asked questions generated from this part’s specifications.
What is the maximum operating frequency of the TCA9548A?

400 kHz.

What is the operating temperature range of the TCA9548A?

-40 to 85 °C.

What is the supply voltage range for the TCA9548A?

1.65 to 5.5 V.

What ESD protection does the TCA9548A have?

±2000 V HBM.

What is the latch-up performance of the TCA9548A?

Exceeds 100 mA per JESD 78 Class II.

How many channels does the TCA9548A have?

8 channels.

What packages are available for the TCA9548A?

TSSOP (PW), VQFN (RGE), and VSSOP (DGS).

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