PCA9554APWRG4

Product Overview

Category: Integrated Circuit (IC)

Use: The PCA9554APWRG4 is a 8-bit I2C-bus and SMBus I/O expander designed for use in various applications. It provides remote I/O expansion for most microcontroller families via the I2C-bus interface.

Characteristics: - 8-bit remote I/O port with interrupt and reset - Low standby current consumption of 1 µA - Compatible with I2C-bus and SMBus interfaces - Operating voltage range: 2.3 V to 5.5 V - Open-drain interrupt output - Noise filter on SCL/SDA inputs - ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per JESD22-A115, and 1000 V CDM per JESD22-C101

Package: TSSOP (Thin Shrink Small Outline Package)

Essence: The PCA9554APWRG4 is an essential component for expanding the input/output capabilities of microcontrollers through the I2C-bus interface.

Packaging/Quantity: The PCA9554APWRG4 is typically sold in reels of 2500 units.

Specifications

• Supply Voltage Range: 2.3 V to 5.5 V
• Input/Output Voltage Range: 0 V to VDD
• Standby Current: 1 µA (maximum)
• Operating Temperature Range: -40°C to +85°C
• I2C-bus Frequency: 100 kHz, 400 kHz, or 1 MHz

Detailed Pin Configuration

The PCA9554APWRG4 has a total of 16 pins, which are assigned as follows:

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

Functional Features

• Remote I/O expansion for microcontrollers
• Supports up to 8 I/O ports
• Interrupt output for efficient event notification
• Low standby current consumption for power efficiency
• Noise filter on SCL/SDA inputs for improved signal integrity
• ESD protection for enhanced reliability

Advantages and Disadvantages

Advantages: - Easy integration with microcontroller systems - Flexible I2C-bus interface for communication - Low power consumption in standby mode - Robust ESD protection for increased durability

Disadvantages: - Limited number of I/O ports (8 ports) - Requires additional components for complete functionality

Working Principles

The PCA9554APWRG4 operates as an I/O expander by communicating with a microcontroller through the I2C-bus interface. It allows the microcontroller to control and monitor up to 8 remote I/O ports. The device can be addressed using three address pins (A0, A1, A2), enabling multiple devices to coexist on the same bus.

The I/O ports can be configured as inputs or outputs, and their states can be controlled or read by the microcontroller. The interrupt output pin (INT) can be used to notify the microcontroller of any changes in the input states, reducing the need for continuous polling.

Detailed Application Field Plans

The PCA9554APWRG4 finds applications in various fields, including but not limited to: - Industrial automation - Home automation - Internet of Things (IoT) devices - Robotics - Sensor interfaces - Keypad interfaces

Its ability to expand the I/O capabilities of microcontrollers makes it suitable for a wide range of applications that require additional digital inputs and outputs.

Detailed and Complete Alternative Models

Some alternative models to the PCA9554APWRG4 include: - PCA9554AD: 8-bit I2C-bus and SMBus I/O expander with different package options - MCP23008: 8-bit I/O expander with I2C interface - PCF8574: 8-bit remote I/O expander with I2C-bus interface

These alternative models offer similar functionality and can be considered as substitutes depending on specific requirements and availability.

In conclusion, the