PCA9544APW

Specialized Overview

The PCA9544APW is a bidirectional translating switch manufactured by Texas Instruments, designed for I2C and SMBus applications. It features four independent switches that allow multiple master devices to share a single bus without address conflicts. The device operates within a supply voltage range of 1.65 V to 5.5 V, supporting low-power systems. It is housed in a TSSOP-20 package suitable for surface mount installation. The component supports data rates up to 400 kHz and functions reliably across an operating temperature range from -40°C to +85°C.

Specialized Feature Summary

• Provides four independent bidirectional translating switches for I2C and SMBus protocols
• Enables multiple masters to share a single bus while preventing address conflicts
• Supports voltage translation between different power domains

Specialized Applications

• I2C bus expansion in embedded systems
• SMBus interface management
• Multi-master bus configurations

Specialized Procurement Notes

Verify the specific suffix 'PW' corresponds to the TSSOP-20 package when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors. Ensure the component meets the required operating temperature range for your specific application environment before procurement.

Specialized Selection Notes

Select this component when designing systems requiring multiple I2C masters on a shared bus. It is suitable for applications needing voltage translation between different logic levels. Consider the TSSOP-20 package constraints for PCB layout. Verify compatibility with your system's voltage requirements within the 1.65 V to 5.5 V range.

Specialized Part Context

This part belongs to the PCA9544A series of bidirectional translating switches from Texas Instruments. It is distinct from similar parts like the TCA9544A which may have different electrical characteristics or packaging options. The PCA9544A series is specifically engineered for I2C and SMBus bus isolation and translation tasks.

Specialized Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult official Texas Instruments documentation for potential cross-references.