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PCA9555D from PHILIPS

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PCA9555D

Manufacturer: PHILIPS, PHIL, Pb-free, NXP

16-bit I2C and SMBus I/O port with interrupt

Partnumber Manufacturer Quantity Availability
PCA9555D PHILIPS, PHIL, Pb-free, NXP 3302 In Stock

Description and Introduction

16-bit I2C and SMBus I/O port with interrupt The **PCA9555D** 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 enables efficient communication with minimal wiring, making it ideal for space-constrained applications.  

Featuring **16 programmable GPIO pins**, the PCA9555D can be configured as 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 components. The device supports **interrupt functionality**, allowing the host controller to respond promptly to input changes without continuous polling.  

With a **wide operating voltage range (2.3V to 5.5V)**, the PCA9555D is compatible with both 3.3V and 5V systems. Its **low standby current consumption** makes it suitable for power-sensitive applications. Additionally, the device offers **hot-insertion protection**, ensuring reliable performance in dynamic environments.  

The PCA9555D is commonly used in industrial control, consumer electronics, and embedded systems where expanding I/O capacity is essential. Its robust design, ease of integration, and reliable performance make it a preferred choice for engineers seeking a scalable I/O solution.  

Available in a **SOIC package**, the PCA9555D balances compactness with functionality, delivering a cost-effective solution for expanding digital interfaces.

Application Scenarios & Design Considerations

16-bit I2C and SMBus I/O port with interrupt

Alternative Part Number

  • TCA9555PWR --: Pin-compatible 16-bit I2C I/O expander with interrupt output, direct functional replacement for PCA9555 in most designs.
  • PCF8575TS --: 16-bit I2C I/O expander from the same NXP family, similar register structure and widely used as a PCA9555 substitute.
  • MAX7311AUG+ --: 16-bit I2C port expander with interrupt and similar feature set, suitable alternative when PCA9555 availability is limited.

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