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TCA9546APWR The Texas Instruments TCA9546APWR is a 4-channel bidirectional translating switch controlled via the I2C bus. It operates from 1.65V to 5.5V and supports up to 400kHz clock frequencies.
Mfr Part #:

TCA9546APWR

Available from 7 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments TCA9546APWR is a 4-channel bidirectional translating switch controlled via the I2C bus. It operates from 1.65V to 5.5V and supports up to 400kHz clock frequencies.
✓ Total Stock: 16,937 pcs
$ Price Range: $0.46

TCA9546APWR Available from 7 distributors

✓ Authorised
✓ Non-Authorised
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TCA9546APWR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Circuit
Features
Frequency
Independent Circuits
Latch-up Performance
Mounting Type
Number of Channels
Operating Temperature
Supplier Device Package
Supplier Package
Type
Voltage
Voltage Supply Source
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TCA9546APWR Description

Short technical summary and product information.

The TCA9546APWR from Texas Instruments is a quad bidirectional translating switch designed for I2C and SMBus applications. The device features four downstream switch channels that fan out from a single upstream SCL/SDA pair. This allows for flexible channel selection via the I2C bus, enabling the connection of multiple I2C devices or buses.

 

With an operating supply voltage range of 1.65V to 5.5V, the TCA9546APWR supports voltage-level translation between 1.8V, 2.5V, 3.3V, and 5V buses. It operates at clock frequencies up to 400kHz and includes an active-low reset input. The switch channels are deselected upon power-up, and the device supports hot insertion without glitches.

 

Packaged in a 16-TSSOP, the TCA9546APWR is suitable for surface mount applications. Its latch-up performance exceeds 100 mA, and ESD protection meets JESD 22 standards, including 4000V for the human-body model and 1500V for the charged-device model.

TCA9546APWR Quick Information

Product Type: I2C/SMBus Switch
Canonical Name: TCA9546A 4-Channel I2C/SMBus Switch
Subcategory: I2C & I3C Switches & Multiplexers

TCA9546APWR Compliance

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

TCA9546APWR Estimated Pricing

Qty Low High
1+ $0.46 $0.46

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

TCA9546APWR Features

  • Quad bidirectional translating I2C switch.
  • Supports 1.65V to 5.5V operation.
  • Voltage-level translation between buses.
  • Active-low reset input included.
  • 16-TSSOP surface mount package.

TCA9546APWR Applications

  • Multiplexing multiple I2C devices.
  • Interfacing buses with different voltages.
  • Expanding I2C bus capacity.
  • System control and monitoring.

TCA9546APWR FAQs

7 frequently asked questions generated from this part’s specifications.
What is the supply voltage range?

1.65V to 5.5V.

What package is the TCA9546APWR available in?

16-TSSOP.

What is the operating temperature range?

-40°C to 85°C.

What is the maximum operating frequency?

400 kHz.

How many channels does the TCA9546APWR have?

4 channels.

What is the ESD protection rating?

4000 V HBM and 1500 V CDM.

What is the latch-up performance?

Exceeds 100 mA per JESD 78.

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