PCA9548ADWG4

Specialized Overview

The PCA9548ADWG4 is an 8-channel I2C and SMBus multiplexer switch manufactured by Texas Instruments. It operates within a supply voltage range of 1.65 V to 5.5 V, supporting bidirectional translating switches for diverse system requirements. The device features a maximum on-resistance of 45 Ohms and a maximum power supply current of 80 uA. It functions reliably across an operating temperature range from -40°C to +85°C. The component is housed in a 24-pin SOIC package designed for surface mount installation.

Specialized Feature Summary

• Provides eight independent channels for I2C and SMBus signal routing
• Supports bidirectional voltage translation between different bus domains
• Includes a reset input pin for initializing channel states

Specialized Applications

• Expanding I2C bus capacity in embedded systems
• Connecting multiple slave devices to a single master controller
• Isolating I2C buses in mixed-voltage environments

Specialized Procurement Notes

Verify the specific suffix 'G4' against official manufacturer documentation to confirm lead-free compliance and RoHS status. Ensure the SOIC-24 package dimensions match your PCB footprint requirements before ordering. Cross-reference the datasheet revision date to guarantee compatibility with your design specifications.

Specialized Selection Notes

Select this component when eight distinct I2C channels are required from a single interface. The wide voltage range accommodates both low-power and standard logic systems. Consider the SOIC-24 package availability if space constraints allow for through-hole or larger surface-mount footprints compared to smaller alternatives.

Specialized Part Context

This part belongs to the PCA9548A series of I2C switches. It shares core functionality with variants like the PCA9548APWR but differs in package type. The 'D' suffix indicates the SOIC package, while 'G4' typically denotes environmental compliance attributes defined by Texas Instruments.

Specialized Replacement Considerations

The PCA9548APWR serves as a functional equivalent with identical electrical characteristics but utilizes a TSSOP-24 package. Verify pin-to-pin compatibility and thermal performance differences due to the distinct package geometries before substituting.