PCA9554ARGTR

Overview

Category: Integrated Circuit (IC)

Use: GPIO Expander

Characteristics: - 8-bit I/O expander for I2C-bus/SMBus applications - Low standby current consumption of 1 µA - Operating voltage range: 2.3 V to 5.5 V - Open-drain interrupt output - Internal power-on reset - Noise filter on SCL/SDA inputs - Latched outputs with high-current drive capability for directly driving LEDs - 400 kHz Fast-mode I2C-bus interface - ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per JESD22-A115, and 1000 V CDM per JESD22-C101

Package: 16-pin TSSOP

Essence: The PCA9554ARGTR is an 8-bit I/O expander designed for use in I2C-bus/SMBus applications. It provides additional general-purpose input/output (GPIO) pins, allowing the user to expand the number of available I/Os on a microcontroller or other devices.

Packaging/Quantity: The PCA9554ARGTR is available in a 16-pin TSSOP package. It is typically sold in reels of 2500 units.

Specifications

• Supply Voltage Range: 2.3 V to 5.5 V
• Input Voltage Range: GND to VDD
• Output Voltage Range: GND to VDD
• Maximum Output Current: ±10 mA
• Standby Current: 1 µA (maximum)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The PCA9554ARGTR has a total of 16 pins. The pin configuration is as follows:

1. SDA - Serial Data Input/Output 2. SCL - Serial Clock Input 3. A0 - Address Input 4. A1 - Address Input 5. A2 - Address Input 6. INT - Interrupt Output 7. P0 - General Purpose I/O Pin 0 8. P1 - General Purpose I/O Pin 1 9. P2 - General Purpose I/O Pin 2 10. P3 - General Purpose I/O Pin 3 11. P4 - General Purpose I/O Pin 4 12. P5 - General Purpose I/O Pin 5 13. P6 - General Purpose I/O Pin 6 14. P7 - General Purpose I/O Pin 7 15. VDD - Supply Voltage 16. GND - Ground

Functional Features

• The PCA9554ARGTR is controlled through the I2C-bus/SMBus interface, allowing for easy integration into existing systems.
• It provides 8 additional GPIO pins, which can be used as inputs or outputs depending on the user's requirements.
• The device features a low standby current consumption of only 1 µA, making it suitable for battery-powered applications.
• The open-drain interrupt output allows for efficient communication between the PCA9554ARGTR and the microcontroller.
• The latched outputs with high-current drive capability enable direct driving of LEDs without the need for external components.

Advantages and Disadvantages

Advantages: - Easy integration into existing systems using the I2C-bus/SMBus interface. - Low standby current consumption for power-efficient operation. - High-current drive capability for directly driving LEDs. - ESD protection exceeds industry standards.

Disadvantages: - Limited number of GPIO pins (8) compared to other expanders available in the market. - Requires additional components for more complex applications.

Working Principles

The PCA9554ARGTR operates as an I/O expander by communicating with a microcontroller or other devices through the I2C-bus/SMBus interface. The microcontroller sends commands and data to the PCA9554ARGTR, which then controls the state of its GPIO pins accordingly. The device can be configured as inputs or outputs, allowing for versatile use in various applications.

Detailed Application Field Plans

The PCA9554ARGTR can be used in a wide range of applications, including but not limited to:

1. Industrial automation systems
2. Home automation systems
3. Internet of Things (IoT) devices
4. Consumer electronics
5. Automotive electronics
6. Medical devices
7. Robotics

In industrial automation systems, the PCA9554ARGTR can be used to expand the number of I/Os available on a programmable logic controller (PLC), allowing for the control