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PCA9554ARGTR from TI,Texas Instruments

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PCA9554ARGTR

Manufacturer: TI

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

Partnumber Manufacturer Quantity Availability
PCA9554ARGTR TI 9 In Stock

Description and Introduction

Remote 8-Bit I2C and SMBus I/O Expander with Interrupt Output and Configuration Registers 16-QFN -40 to 85 The PCA9554ARGTR from Texas Instruments is a versatile 8-bit I/O expander designed to enhance system flexibility by providing additional GPIO (General-Purpose Input/Output) ports via an I²C interface. This compact and efficient component is ideal for applications where microcontroller I/O pins are limited, enabling seamless expansion with minimal design complexity.  

Featuring low standby current consumption, the PCA9554ARGTR operates across a wide voltage range (2.3V to 5.5V), making it suitable for both low-power and standard-voltage systems. Its interrupt output capability allows efficient event-driven processing, reducing the need for continuous polling. The device supports both input and output configurations, with programmable polarity inversion for added flexibility.  

With a robust I²C interface supporting clock frequencies up to 400 kHz, the PCA9554ARGTR ensures reliable communication in industrial, consumer, and embedded applications. Its small 16-pin QFN package (RGT) is optimized for space-constrained designs.  

Key features include hardware-configurable addressing, Schmitt-trigger inputs for noise immunity, and compatibility with hot-insertion requirements. Whether used in LED control, sensor interfacing, or system monitoring, the PCA9554ARGTR delivers a cost-effective solution for expanding I/O capabilities while maintaining design simplicity.

Application Scenarios & Design Considerations

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

Alternative Part Number

  • TCA9554APWR --: Pin-compatible 8-bit I2C I/O expander from TI's TCA series with similar register map and function, suitable drop-in replacement in most designs.
  • PCF8574APWR --: Widely used 8-bit I2C I/O expander with similar functionality and package options; requires minor software adjustment but is a common lower-cost alternative.
  • MAX7311AUG+ --: 16-bit I2C I/O expander offering more ports and comparable I2C interface; good alternative when extra I/O is acceptable and pinout can be adapted.

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