IC Phoenix logo

Home ›  P  › P13 > PCA9554A

PCA9554A from PHILIPS

Fast Delivery, Competitive Price @IC-phoenix

If you need more electronic components or better pricing, we welcome any inquiry.

PCA9554A

Manufacturer: PHILIPS, NXP

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

Partnumber Manufacturer Quantity Availability
PCA9554A PHILIPS, NXP 119 In Stock

Description and Introduction

8-bit I2C and SMBus I/O port with interrupt The **PCA9554A** from Philips is an advanced **8-bit I/O expander** designed to enhance the input/output capabilities of microcontrollers and other digital systems. Utilizing the **I²C-bus interface**, this component provides a simple and efficient way to add extra I/O ports with minimal wiring, making it ideal for space-constrained applications.  

Featuring **low standby current consumption**, the PCA9554A is well-suited for **battery-powered devices** and energy-efficient designs. Each of its eight I/O pins can be independently configured as an input or output, offering flexibility in system integration. The device also includes **interrupt functionality**, allowing the host controller to be alerted when input states change, reducing the need for continuous polling.  

With an **operating voltage range of 2.3V to 5.5V**, the PCA9554A is compatible with a wide variety of logic levels, ensuring seamless integration into mixed-voltage systems. Its robust design includes **internal pull-up resistors**, further simplifying circuit implementation.  

Common applications include **sensor interfaces, keypad scanning, LED control, and general-purpose I/O expansion**. The PCA9554A is a reliable solution for designers seeking to extend system functionality while maintaining a compact and efficient design. Its ease of use and versatility make it a preferred choice in embedded and industrial applications.

Application Scenarios & Design Considerations

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

Alternative Part Number

  • TCA9554APWR --: Pin-compatible 8-bit I2C I/O expander with the same register map and address scheme, widely available and a direct functional drop-in for the PCA9554A.
  • PCF8574APW --: Classic 8-bit I2C I/O expander from the original Philips/NXP lineage, similar function and package options, though it lacks the interrupt output so firmware may need minor adjustment.
  • MAX7311AUG+ --: 16-bit I2C I/O expander with interrupt support that can cover PCA9554A designs needing more ports, offering a robust alternative when extra I/O is acceptable.
  • PCF8574AT --: Simpler 8-bit I2C I/O expander from the same vendor family; functionally similar for basic GPIO expansion though it lacks the PCA9554A configuration register features.

Request Quotation

For immediate assistance, call us at +86 533 2716050 or email [email protected]

Part Number Quantity Target Price($USD) Email Contact Person
We offer highly competitive channel pricing. Get in touch for details.

Specializes in hard-to-find components chips