PCA9554PWRManufacturer: TI Remote 8-Bit I2C and SMBus I/O Expander with Interrupt Output and Configuration Registers 16-TSSOP -40 to 85 | |||
| Partnumber | Manufacturer | Quantity | Availability |
|---|---|---|---|
| PCA9554PWR | TI | 13924 | In Stock |
Description and Introduction
Remote 8-Bit I2C and SMBus I/O Expander with Interrupt Output and Configuration Registers 16-TSSOP -40 to 85 The **PCA9554PWR** from Texas Instruments is an 8-bit I²C-bus and SMBus I/O expander designed to enhance the input/output capabilities of microcontrollers in various applications. This versatile component enables the addition of extra GPIO pins via a simple two-wire serial interface, making it ideal for space-constrained designs where microcontroller I/O resources are limited.  
Featuring interrupt functionality, the PCA9554PWR can alert the host controller of input state changes, reducing the need for continuous polling and improving system efficiency. Each of its eight I/O pins can be independently configured as inputs or outputs, with internal pull-up resistors simplifying circuit design. The device operates over a wide voltage range (2.3V to 5.5V), ensuring compatibility with both 3.3V and 5V systems.   Common applications include industrial control systems, consumer electronics, and embedded designs where expansion of digital I/O is required. Its small **TSSOP-16** package makes it suitable for compact PCB layouts while maintaining robust performance. With low standby current consumption, the PCA9554PWR is also well-suited for power-sensitive applications.   Engineers value this component for its ease of integration, reliability, and flexibility in expanding system I/O without requiring additional microcontroller resources. |
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Application Scenarios & Design Considerations
Remote 8-Bit I2C and SMBus I/O Expander with Interrupt Output and Configuration Registers 16-TSSOP -40 to 85
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