PCA9671PWManufacturer: NXP Remote 16-bit I/O expander for Fm+ I2C-bus with reset | |||
| Partnumber | Manufacturer | Quantity | Availability |
|---|---|---|---|
| PCA9671PW | NXP | 696 | In Stock |
Description and Introduction
Remote 16-bit I/O expander for Fm+ I2C-bus with reset The **PCA9671PW** from NXP Semiconductors is a versatile **I²C-bus controlled 8-bit I/O expander** designed to simplify digital interface expansion in embedded systems. It provides an efficient solution for applications requiring additional GPIO pins while minimizing microcontroller overhead.  
Featuring **low-voltage operation (1.65V to 5.5V)**, the PCA9671PW is compatible with a wide range of microcontrollers and logic levels. Its **I²C interface** supports standard (100 kHz) and fast (400 kHz) modes, ensuring seamless integration into existing communication architectures.   Unlike traditional I/O expanders, the PCA9671PW eliminates the need for internal registers by directly reflecting pin states, reducing software complexity. Each of its **8 I/O pins** can be independently configured as inputs or outputs, offering flexibility for various applications, including sensor interfacing, LED control, and button monitoring.   The device includes **internal pull-up resistors**, reducing external component count, and supports **hot insertion** for robust system performance. Available in a **TSSOP16 package**, it is suitable for space-constrained designs.   With its **low power consumption** and straightforward operation, the PCA9671PW is an ideal choice for designers seeking reliable I/O expansion without compromising efficiency or performance. |
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Application Scenarios & Design Considerations
Remote 16-bit I/O expander for Fm+ I2C-bus with reset
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