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PCA9554ADBR from TI,Texas Instruments

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PCA9554ADBR

Manufacturer: TI

Remote 8-Bit I2C and SMBus I/O Expander with Interrupt Output and Configuration Registers 16-SSOP -40 to 85

Partnumber Manufacturer Quantity Availability
PCA9554ADBR TI 1944 In Stock

Description and Introduction

Remote 8-Bit I2C and SMBus I/O Expander with Interrupt Output and Configuration Registers 16-SSOP -40 to 85 The **PCA9554ADBR** from Texas Instruments is a versatile **8-bit I/O expander** designed to enhance microcontroller-based systems by providing additional general-purpose input/output (GPIO) ports. Utilizing the **I²C-bus/SMBus interface**, this component simplifies system design by reducing the number of GPIO pins required on the host controller while maintaining efficient communication.  

Key features include **low standby current consumption**, making it suitable for power-sensitive applications, and **interrupt functionality** that alerts the host controller of input state changes without continuous polling. The PCA9554ADBR supports both **3.3V and 5V operation**, ensuring compatibility with a wide range of microcontrollers and logic levels.  

With **individually configurable I/O pins**, each port can be set as an input or output, offering flexibility in interfacing with sensors, switches, LEDs, and other peripherals. The device also incorporates **internal pull-up resistors**, further simplifying circuit design.  

Housed in a compact **SSOP-16 package**, the PCA9554ADBR is ideal for space-constrained applications such as industrial controls, consumer electronics, and embedded systems. Its robust design and ease of integration make it a reliable choice for expanding I/O capabilities in modern electronic designs.

Application Scenarios & Design Considerations

Remote 8-Bit I2C and SMBus I/O Expander with Interrupt Output and Configuration Registers 16-SSOP -40 to 85

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