PCA9555DBManufacturer: PHILIPS 16-bit I2C-bus and SMBus I/O port with interrupt | |||
| Partnumber | Manufacturer | Quantity | Availability |
|---|---|---|---|
| PCA9555DB | PHILIPS | 25000 | In Stock |
Description and Introduction
16-bit I2C-bus and SMBus I/O port with interrupt The **PCA9555DB** from Philips is a versatile **16-bit I/O expander** designed to enhance the input/output capabilities of microcontrollers and other digital systems. Utilizing the **I²C-bus interface**, this component allows for efficient communication with minimal wiring, making it ideal for space-constrained applications.  
Featuring **16 programmable GPIO pins**, the PCA9555DB can be configured as either inputs or outputs, providing flexibility for interfacing with sensors, switches, LEDs, and other peripherals. Each pin includes **internal pull-up resistors**, simplifying circuit design by reducing external component requirements. The device supports **interrupt functionality**, enabling immediate notification of input state changes, which enhances system responsiveness.   With an operating voltage range of **2.3V to 5.5V**, the PCA9555DB is compatible with both **3.3V and 5V logic levels**, ensuring broad applicability across different platforms. Its **low standby current consumption** makes it suitable for power-sensitive designs.   Packaged in a **SSOP-24** form factor, the PCA9555DB is a reliable solution for expanding I/O capabilities in embedded systems, industrial controls, and consumer electronics. Its robust design and ease of integration make it a practical choice for engineers seeking efficient I/O expansion without compromising performance. |
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Application Scenarios & Design Considerations
16-bit I2C-bus and SMBus I/O port with interrupt
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