PCA9546ADManufacturer: PHILIPS, NXP, NXP 4-channel I2C-bus switch with reset |
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| Partnumber | Manufacturer | Quantity | Availability |
|---|---|---|---|
| PCA9546AD | PHILIPS, NXP, NXP | 4105 | In Stock |
Description and Introduction
4-channel I2C-bus switch with reset The **PCA9546AD** from NXP Semiconductors is a versatile **4-channel I²C-bus multiplexer** designed to enable communication between multiple I²C devices sharing the same bus. This integrated circuit (IC) simplifies system design by allowing a single master to control up to four separate I²C buses, eliminating address conflicts and enhancing signal integrity.  
Featuring **low on-resistance switches**, the PCA9546AD ensures minimal voltage drop and power loss, making it ideal for power-sensitive applications. It supports **bidirectional voltage-level translation**, accommodating mixed-voltage systems (1.8V to 5.5V), which enhances compatibility across different logic levels.   The device includes **interrupt inputs** for each channel, enabling efficient event-driven communication. Its **software-configurable channel selection** allows dynamic switching between I²C buses, providing flexibility in multi-device environments. Additionally, the PCA9546AD incorporates **power-up reset functionality**, ensuring a predictable state upon initialization.   Common applications include **sensor hubs, server systems, industrial automation, and consumer electronics**, where multiple I²C peripherals must coexist without interference. With its robust performance and compact footprint, the PCA9546AD is a reliable solution for expanding I²C connectivity in complex embedded systems.   Engineers appreciate its ease of integration and compliance with **I²C Fast-mode Plus (1 MHz) specifications**, making it a preferred choice for high-performance designs. |
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Application Scenarios & Design Considerations
4-channel I2C-bus switch with reset
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