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PCA9546APWR The Texas Instruments PCA9546APWR is a 4-channel I2C/SMBus switch designed for voltage-level translation. It operates within a 2.3V to 5.5V supply range and supports frequencies up to 400kHz.
Mfr Part #:

PCA9546APWR

Available from 5 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments PCA9546APWR is a 4-channel I2C/SMBus switch designed for voltage-level translation. It operates within a 2.3V to 5.5V supply range and supports frequencies up to 400kHz.
✓ Total Stock: 97,948 pcs
$ Price Range: $0.63

PCA9546APWR Available from 5 distributors

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PCA9546APWR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Applications
Automotive Grade
Frequency
Industrial Grade
Interface
Lead Spacing
Medical Grade
Military Grade
Mounting Type
Number of Channels
Operating Temperature
Operating Voltage
Storage Temperature
Supplier Device Package
Tape & Reel
Voltage
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PCA9546APWR Description

Short technical summary and product information.

The Texas Instruments PCA9546APWR is a versatile 4-channel bidirectional translating switch that facilitates communication between I2C and SMBus buses. It supports a wide operating voltage range from 2.3V to 5.5V, making it suitable for various system designs.

 

This switch features an active-low reset input and three address pins, allowing for up to eight PCA9546A devices to be connected on the same I2C bus. Channel selection is managed via the I2C bus, enabling flexible configuration. The device supports voltage-level translation between 1.8V, 2.5V, 3.3V, and 5V buses due to its low R ON switches. It also offers features like no glitch on power-up, hot insertion support, and low standby current.

 

The PCA9546APWR is available in a 16-TSSOP package, designed for surface mount applications. Its inputs are 5.5V tolerant, and it operates at clock frequencies up to 400kHz. The component is rated for an operating temperature range of -40°C to 85°C.

PCA9546APWR Quick Information

Product Type: I2C/SMBus Switch
Canonical Name: PCA9546A 4-channel I2C/SMBus Switch with Reset and Voltage Translation
Subcategory: I2C & I3C switches & multiplexers

PCA9546APWR Compliance

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

PCA9546APWR Estimated Pricing

Qty Low High
1+ $0.63 $0.63

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

PCA9546APWR Features

  • 4-channel bidirectional translating switch.
  • Supports I2C and SMBus protocols.
  • Operates from 2.3V to 5.5V supply.
  • Enables voltage-level translation.
  • Available in 16-TSSOP package.

PCA9546APWR Applications

  • Facilitates multi-voltage bus communication.
  • Used in systems with mixed voltage levels.
  • Enables flexible I2C bus expansion.
  • Supports hot-swappable interfaces.

PCA9546APWR FAQs

5 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the PCA9546APWR?

The operating voltage range is 2.3 V to 5.5 V.

What is the maximum frequency supported by the PCA9546APWR?

The maximum frequency supported is 400 kHz.

What package type is the PCA9546APWR available in?

The PCA9546APWR is available in a 16-TSSOP package.

What type of interface does the PCA9546APWR support?

The PCA9546APWR supports I2C and SMBus interfaces.

What are the applications for the PCA9546APWR?

The PCA9546APWR is used as a translating switch.

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