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PCA8550PW from NXP,NXP Semiconductors

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PCA8550PW

Manufacturer: NXP

4-bit multiplexed/1-bit latched 5-bit I2C EEPROM DIP switch

Partnumber Manufacturer Quantity Availability
PCA8550PW NXP 2844 In Stock

Description and Introduction

4-bit multiplexed/1-bit latched 5-bit I2C EEPROM DIP switch The **PCA8550PW** from NXP Semiconductors is a versatile **I²C-bus controlled 8-bit I/O expander**, designed to enhance system flexibility by providing additional digital input/output ports. This compact IC is ideal for applications requiring extra GPIOs without increasing microcontroller pin count.  

Featuring **low-voltage operation (1.65V to 5.5V)**, the PCA8550PW is suitable for both **battery-powered and industrial systems**. Its **I²C interface** ensures seamless integration with microcontrollers, supporting standard (100 kHz) and fast (400 kHz) communication modes. The device includes **interrupt functionality**, reducing polling overhead by alerting the host upon input state changes.  

With **8 configurable I/O pins**, each can be independently set as an input or output, offering adaptability for diverse applications such as **sensor interfacing, LED control, or keypad scanning**. The PCA8550PW also incorporates **internal pull-up resistors**, simplifying circuit design while maintaining signal integrity.  

Housed in a **TSSOP16 package**, the component is optimized for space-constrained designs. Its robust ESD protection ensures reliability in demanding environments.  

Engineers favor the PCA8550PW for its **ease of use, low power consumption, and compatibility with a wide range of microcontrollers**, making it a practical choice for expanding digital I/O capabilities efficiently.

Application Scenarios & Design Considerations

4-bit multiplexed/1-bit latched 5-bit I2C EEPROM DIP switch

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