Texas Instruments

PCA9548ADW  

Specialized Backplane Connectors

PCA9548ADW Description

The PCA9548ADW from Texas Instruments is a high-performance I²C/SMBus translating switch designed for surface-mount applications in complex electronic systems. Packaged in a 24-SOIC tube, this specialized IC enables seamless communication between multiple I²C buses, operating within a 2.3V to 5.5V supply range. With its Last Time Buy status, it remains a reliable choice for legacy designs requiring robust bus management. The device complies with ROHS3 and REACH environmental standards, ensuring suitability for modern regulatory requirements.

PCA9548ADW Features

• I²C/SMBus Compatibility: Supports standard and fast-mode I²C protocols (up to 400 kHz), ensuring broad interoperability.
• Low Voltage Operation: Wide supply range (2.3V–5.5V) accommodates mixed-voltage systems without level shifters.
• 8-Channel Switching: Independently selects one of eight downstream I²C buses, reducing bus contention and simplifying multiplexing.
• High Noise Immunity: Robust design minimizes signal integrity issues in noisy environments.
• Moisture Sensitivity Level 1 (MSL1): Suitable for extended storage and handling in humid conditions.
• Low Standby Current: Optimized for power-sensitive applications.

PCA9548ADW Applications

• Embedded Systems: Ideal for multi-master I²C architectures in industrial controllers and IoT devices.
• Telecom Backplanes: Enables hot-swappable card management by isolating bus segments.
• Test & Measurement Equipment: Facilitates multiplexing for automated test systems with multiple sensors.
• Consumer Electronics: Used in smart displays, set-top boxes, and other devices requiring bus expansion.
• Automotive Infotainment: Supports modular designs with segregated I²C peripherals.

Conclusion of PCA9548ADW

The PCA9548ADW stands out for its versatility, reliability, and ease of integration in I²C-based systems. Its 8-channel switching capability and wide voltage range make it superior to simpler multiplexers, while its industrial-grade robustness ensures longevity in demanding applications. Engineers seeking a proven solution for bus management in legacy or new designs will find this IC indispensable.

PCA9548ADW Documents

Download datasheets and manufacturer documentation for PCA9548ADW

Datasheets :

PCA9548A      

PCN Obsolescence/ EOL :

Mult Dev EOL 28/Mar/2023      

HTML Datasheet :

PCA9548A      

PCN Design/Specification :

Material Set Rev 24/Jan/2016       Datasheet Update 25/Jun/2014