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PCA9554PW-T from PHILIPS

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PCA9554PW-T

Manufacturer: PHILIPS

8-bit I2C-bus and SMBus I/O port with interrupt

Partnumber Manufacturer Quantity Availability
PCA9554PW-T,PCA9554PWT PHILIPS 1764 In Stock

Description and Introduction

8-bit I2C-bus and SMBus I/O port with interrupt The **PCA9554PW-T** from Philips is an advanced **I²C-bus controlled 8-bit I/O expander**, designed to enhance the input/output capabilities of microcontrollers and other digital systems. This versatile component provides **eight general-purpose parallel I/O pins**, which can be individually configured as inputs or outputs via the I²C interface.  

Featuring **low standby current consumption**, the PCA9554PW-T is ideal for power-sensitive applications. Its **interrupt output pin** signals changes on input ports, reducing the need for continuous polling and improving system efficiency. The device operates across a **wide voltage range (2.3V to 5.5V)**, making it compatible with various logic levels.  

With **built-in pull-up resistors**, the PCA9554PW-T simplifies circuit design while ensuring reliable signal integrity. Its **high noise immunity** and robust ESD protection enhance performance in industrial and consumer applications.  

Common uses include **keypad scanning, LED control, sensor interfacing, and system monitoring**. The compact **TSSOP-16 package** ensures space-efficient integration into modern PCB designs.  

Engineers favor the PCA9554PW-T for its **ease of configuration, low power consumption, and seamless I²C compatibility**, making it a reliable choice for expanding I/O capabilities in embedded systems.

Application Scenarios & Design Considerations

8-bit I2C-bus and SMBus I/O port with interrupt

Alternative Part Number

  • TCA9554APW --: Pin-compatible 8-bit I2C I/O expander with the same TSSOP-16 footprint and register set, widely available and a direct functional drop-in.
  • PCF8574APW --: Classic 8-bit I2C I/O expander in TSSOP-16 from the original Philips/NXP lineage; simpler feature set but electrically compatible for most designs.
  • MAX7311AUG --: 16-bit I2C I/O expander offering more ports than the PCA9554; suitable when extra I/O is acceptable and I2C expander functionality is required.

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