PCA9554DWManufacturer: NXP Remote 8-Bit I2C and SMBus I/O Expander with Interrupt Output and Configuration Registers 16-SOIC -40 to 85 | |||
| Partnumber | Manufacturer | Quantity | Availability |
|---|---|---|---|
| PCA9554DW | NXP | 18 | In Stock |
Description and Introduction
Remote 8-Bit I2C and SMBus I/O Expander with Interrupt Output and Configuration Registers 16-SOIC -40 to 85 The **PCA9554DW** from **NXP Semiconductors** is an **8-bit I²C-bus and SMBus I/O expander** designed to enhance system flexibility by providing additional GPIO ports for microcontrollers or processors with limited I/O capabilities. This CMOS-based device features **low power consumption**, making it ideal for power-sensitive applications such as embedded systems, industrial controls, and consumer electronics.  
With **interrupt functionality**, the PCA9554DW efficiently monitors input state changes, reducing the need for continuous polling and improving system responsiveness. Each of its **eight I/O pins** can be independently configured as inputs or outputs, offering versatile interfacing options for sensors, switches, LEDs, and other peripherals.   The device operates on a **2.3V to 5.5V supply voltage**, ensuring compatibility with a wide range of host systems. Its **I²C-bus interface** supports standard (100 kHz) and fast (400 kHz) communication modes, facilitating seamless integration into existing designs. Additionally, the **PCA9554DW** includes internal pull-up resistors, simplifying PCB layout and reducing external component count.   Housed in a **SOIC-16 package**, the PCA9554DW combines compactness with robust performance, making it a reliable choice for expanding digital I/O in space-constrained applications. Its industrial-grade specifications ensure stable operation across varying environmental conditions. |
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Application Scenarios & Design Considerations
Remote 8-Bit I2C and SMBus I/O Expander with Interrupt Output and Configuration Registers 16-SOIC -40 to 85
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