PCA9549DManufacturer: NXP Octal bus switch with individually I2C-bus controlled enables | |||
| Partnumber | Manufacturer | Quantity | Availability |
|---|---|---|---|
| PCA9549D | NXP | 4980 | In Stock |
Description and Introduction
Octal bus switch with individually I2C-bus controlled enables The **PCA9549D** from NXP Semiconductors is a versatile **I²C bus multiplexer** designed to expand the capabilities of I²C communication systems. This component allows a single master device to interface with multiple downstream I²C buses, enabling efficient management of multiple slave devices sharing the same address space.  
Featuring **four bidirectional channels**, the PCA9549D provides seamless switching between different I²C segments while maintaining signal integrity. It supports standard-mode (100 kHz) and fast-mode (400 kHz) I²C operations, making it suitable for a wide range of applications, including industrial control, embedded systems, and consumer electronics.   The device includes **interrupt functionality**, allowing the master controller to detect and respond to events on any of the downstream buses. Additionally, its low standby current consumption ensures energy efficiency in power-sensitive designs.   With a compact **SO16 package**, the PCA9549D is optimized for space-constrained applications. Its robust design ensures reliable performance in noisy environments, making it a dependable solution for complex I²C bus architectures.   Engineers seeking to simplify multi-bus I²C communication will find the PCA9549D an effective and scalable solution for managing multiple peripherals efficiently. |
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Application Scenarios & Design Considerations
Octal bus switch with individually I2C-bus controlled enables
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