PCA9546ARGVR

Specialized Overview

The PCA9546ARGVR is a bidirectional translating switch manufactured by Texas Instruments, designed for I2C and SMBus applications. It functions as a 4-channel multiplexer with four switches, supporting a bandwidth of 400 kHz. The device operates within a supply voltage range of 2.3 V to 5.5 V and features a maximum on-resistance of 45 Ohms. It is housed in a VQFN-16 package suitable for surface mount technology. The component supports an operating temperature range from -40°C to +85°C, with a maximum power dissipation of 400 mW and a maximum supply current of 12 uA.

Specialized Feature Summary

• Provides bidirectional voltage translation capabilities between different bus domains.
• Acts as a multiplexer to isolate multiple downstream I2C or SMBus devices from a single upstream host.
• Supports standard mode communication speeds up to 400 kHz.

Specialized Applications

• Isolating multiple sensors or peripherals on a shared I2C bus.
• Connecting SMBus compatible devices requiring voltage level shifting.
• System designs needing flexible routing of I2C signals between master and slave components.

Specialized Procurement Notes

Verify the specific suffix 'RVR' corresponds to the VQFN-16 package and tape-and-reel orientation when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor datasheets. Ensure the supplier provides valid traceability for the Texas Instruments part number to avoid counterfeit components.

Specialized Selection Notes

Select this component when a 4-channel I2C/SMBus multiplexer with bidirectional translation is required in a compact VQFN-16 footprint. Compare against other series members like PCA9546AD (SOIC-16) if package constraints differ. Verify that the 2.3 V to 5.5 V operating voltage range aligns with the system's power rails and that the 400 kHz bandwidth meets signal speed requirements.

Specialized Part Context

This part belongs to the PCA9546A series of bidirectional translating switches from Texas Instruments. It shares core electrical specifications with variants such as PCA9546APWR and PCA9546ARGYR, differing primarily in the physical package type. The series is categorized under Switch ICs and is widely used for managing complex I2C bus topologies.

Specialized Replacement Considerations

Direct substitutes include PCA9546APWRG4 (TSSOP-16) and PCA9546ARGYR (VQFN-16). These parts share identical electrical characteristics but differ in package dimensions. Verify pin compatibility and thermal performance before substituting to ensure mechanical fit within the existing design.

Specialized FAQ

What is the maximum switching speed supported by the PCA9546ARGVR?

The device supports a bandwidth of 400 kHz, which corresponds to the standard mode speed for I2C and SMBus protocols.

Does the PCA9546ARGVR support bidirectional voltage translation?

Yes, it is explicitly designed as a bidirectional translating switch, allowing it to interface between different voltage domains.

How many channels does this multiplexer provide?

The PCA9546ARGVR provides four independent switches, functioning as a 4-channel multiplexer.