Product Overview: PCA9545APW,112 from NXP Semiconductors

The PCA9545APW,112 is a high-quality, 4-channel I2C-bus switch with an interrupt logic, designed and manufactured by NXP Semiconductors. This device offers a flexible solution for managing I2C communications, especially in systems where multiple I2C devices with the same address need to be connected to a single I2C bus. By enabling up to four separate downstream channels to be selected, the PCA9545APW,112 allows for a clear and efficient expansion of I2C capabilities.

Key Features

• Channel Selection: The PCA9545APW,112 features four active-low interrupt inputs that allow for easy channel selection, facilitating communication with various I2C devices.
• Low Standby Current: Designed for energy efficiency, the device maintains a low standby current, making it suitable for power-sensitive applications.
• High Noise Immunity: With built-in noise-filtering capabilities, the PCA9545APW,112 ensures reliable operation even in environments with high electrical noise.
• Wide Operating Voltage: The device operates over a wide voltage range from 2.3V to 5.5V, allowing for integration into various system designs without the need for additional voltage level shifting.

Applications

The PCA9545APW,112 is ideal for a multitude of applications. It is particularly useful in server management, where multiple I2C devices are present. It is also well-suited for industrial control systems, consumer electronics, and telecommunications infrastructure that require multiple I2C devices or sensors to be managed through a single bus.

Package and Quality

The PCA9545APW,112 is offered in a TSSOP-20 package, which provides a compact footprint while allowing for adequate pin spacing for ease of PCB design and layout. The device adheres to NXP's rigorous quality standards, ensuring high reliability and performance for critical applications.

In summary, the PCA9545APW,112 is a versatile and reliable I2C-bus switch that enhances the functionality of I2C bus systems. Its ability to connect multiple devices with the same address, low power consumption, and resilience to noise make it an excellent choice for designers looking to optimize their I2C bus systems.