PCA9554APWRManufacturer: 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 |
|---|---|---|---|
| PCA9554APWR | TI | 1798 | 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 **PCA9554APWR** from Texas Instruments is an 8-bit I/O expander designed to enhance system flexibility by enabling additional input/output ports through an I²C-bus interface. This low-power CMOS device is ideal for applications requiring extra GPIO pins without increasing microcontroller pin count.  
Featuring interrupt output functionality, the PCA9554APWR can alert the host controller of input state changes, reducing the need for continuous polling. Each I/O pin is configurable as either an input or output, with internal pull-up resistors simplifying circuit design. The device operates across a wide voltage range (2.3V to 5.5V), making it compatible with various logic levels.   With a high noise immunity and latch-up performance, the PCA9554APWR ensures reliable operation in industrial and consumer electronics. Its compact TSSOP-16 package suits space-constrained designs, while the I²C interface supports multiple devices on the same bus.   Common applications include LED dimming, keypad interfacing, and sensor monitoring. The PCA9554APWR offers a cost-effective solution for expanding I/O capabilities in embedded systems, delivering efficiency and ease of integration.   For detailed specifications, refer to the official datasheet. |
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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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