PCA9548ADW

Specialized Overview

The PCA9548ADW is an 8-channel I2C and SMBus switch manufactured by Texas Instruments, housed in a 24-pin SOIC package. It operates within a supply voltage range of 2.3 V to 5.5 V and supports data rates up to 400 kHz. The device features a maximum on-resistance of 45 Ohms and a maximum power dissipation of 400 mW. It functions across an extended temperature range from -40°C to +85°C with a maximum supply current of 80 uA.

Specialized Feature Summary

• Provides eight independent bidirectional translating switches for I2C and SMBus buses
• Enables multiple I2C masters or slaves to share a single bus without address conflicts
• Includes a reset input to force all channels into a known off state

Specialized Applications

• Expanding I2C bus capacity in embedded systems
• Connecting multiple I2C sensors to a single microcontroller interface
• Managing I2C communication in industrial control environments

Specialized Procurement Notes

Verify the specific suffix 'DW' corresponds to the SOIC-24 package and tape-and-reel or tube packaging as required. Confirm RoHS compliance status through official documentation. Check for end-of-life notifications or discontinuance notices prior to finalizing procurement plans.

Specialized Selection Notes

Select this component when eight isolated I2C channels are required within a standard SOIC footprint. Ensure the system voltage aligns with the 2.3 V to 5.5 V operating range. Consider thermal constraints given the 400 mW power dissipation limit in enclosed designs.

Specialized Part Context

This part belongs to the PCA9548A series of I2C switches. It shares functional similarities with the TCA9548A but differs in voltage specifications and package options. The family provides scalable solutions for I2C bus expansion in various electronic applications.

Specialized Replacement Considerations

The PCA9548ADGVR offers a TVSOP-24 alternative. The TCA9548ARGER provides a VQFN-24 option with different voltage ranges. Verify pin compatibility and electrical parameters before substituting.