PCA9551PWManufacturer: PHIILPS 8-bit I2C-bus LED driver with programmable blink rates | |||
| Partnumber | Manufacturer | Quantity | Availability |
|---|---|---|---|
| PCA9551PW | PHIILPS | 138 | In Stock |
Description and Introduction
8-bit I2C-bus LED driver with programmable blink rates The **PCA9551PW** from Philips is a versatile **I²C-controlled 8-bit I/O expander** designed to enhance the input/output capabilities of microcontrollers and embedded systems. This compact IC provides **eight programmable GPIO pins**, each configurable as either an input or output, making it ideal for applications requiring additional I/O flexibility.  
Featuring an **I²C-bus interface**, the PCA9551PW supports standard (100 kHz) and fast (400 kHz) communication modes, ensuring seamless integration with a wide range of host controllers. It includes internal pull-up resistors, simplifying circuit design while maintaining signal integrity.   Key functionalities include **interrupt output** for efficient event-driven processing and **low standby current consumption**, making it suitable for power-sensitive applications. The device operates within a **2.3V to 5.5V supply range**, accommodating various logic levels.   Common applications include **industrial control systems, LED dimming, sensor interfacing, and general-purpose port expansion**. Its **small TSSOP-16 package** ensures space-efficient PCB layouts, while Philips' robust design ensures reliable performance in demanding environments.   The PCA9551PW is a practical solution for designers seeking to extend I/O resources without increasing microcontroller complexity, offering a balance of performance, power efficiency, and ease of use. |
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Application Scenarios & Design Considerations
8-bit I2C-bus LED driver with programmable blink rates
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