PCA9539APW,118

Product Overview

Category

PCA9539APW,118 belongs to the category of integrated circuits (ICs).

Use

It is commonly used for controlling and expanding the input/output (I/O) capabilities of microcontrollers or other digital devices.

Characteristics

• Low-voltage bidirectional I/O port
• 16 programmable I/O pins
• I2C-bus interface compatibility
• Internal power-on reset
• Noise filter on SCL/SDA inputs
• Polarity inversion register
• Output configuration register
• Interrupt output pin
• Power supply voltage range: 2.3V to 5.5V

Package

PCA9539APW,118 is available in a TSSOP package.

Essence

The essence of PCA9539APW,118 lies in its ability to provide flexible I/O expansion and control through an I2C-bus interface.

Packaging/Quantity

It is typically packaged in reels and comes in quantities of 2500 units per reel.

Specifications

• Operating temperature range: -40°C to +85°C
• Supply voltage: 2.3V to 5.5V
• Maximum clock frequency: 400 kHz
• Input low voltage: -0.5V to 0.8V
• Input high voltage: 1.2V to VDD + 0.5V
• Output low voltage: 0.4V max
• Output high voltage: VDD - 0.4V min

Detailed Pin Configuration

The PCA9539APW,118 has a total of 20 pins. The detailed pin configuration is as follows:

1. A0: Address input pin
2. A1: Address input pin
3. A2: Address input pin
4. SDA: I2C-bus serial data input/output pin
5. SCL: I2C-bus serial clock input pin 6-21. P0-P15: Programmable I/O pins

Functional Features

1. Bidirectional I/O: The PCA9539APW,118 supports bidirectional communication between the microcontroller and external devices.
2. I2C-bus Interface Compatibility: It is compatible with the widely used I2C-bus interface, allowing for easy integration into existing systems.
3. Programmable I/O Pins: The 16 I/O pins can be individually configured as inputs or outputs based on the application requirements.
4. Polarity Inversion Register: Allows for inversion of the polarity of the input pins.
5. Interrupt Output Pin: Provides an interrupt signal to the microcontroller when a change in the input state is detected.

Advantages and Disadvantages

Advantages

• Flexible I/O expansion and control capabilities
• Compatibility with I2C-bus interface simplifies integration
• Low-voltage operation allows for use in various applications
• Internal power-on reset ensures reliable startup

Disadvantages

• Limited number of I/O pins (16)
• Requires additional components for voltage level translation if interfacing with devices operating at different voltage levels

Working Principles

The PCA9539APW,118 operates by communicating with a microcontroller or other digital devices through the I2C-bus interface. It receives commands from the controller and performs the corresponding actions on the I/O pins. The bidirectional nature of the I/O ports allows for both input and output operations. The device can be programmed to respond to specific events or changes in the input state and generate interrupts if required.

Detailed Application Field Plans

PCA9539APW,118 finds applications in various fields, including but not limited to: - Industrial automation - Consumer electronics - Automotive systems - Internet of Things (IoT) devices - Robotics

Detailed and Complete Alternative Models

Some alternative models to PCA9539APW,118 that offer similar functionality include: - PCA9555PW,118 - MCP23017-E/SP - TCA9539PW,118 - MAX7313ATG+ - SN74HC595N

These models can be considered based on specific requirements and compatibility with existing systems.

In conclusion, PCA9539APW,118 is a versatile integrated circuit that provides flexible I/O expansion and control capabilities. Its compatibility with the I2C-bus interface and low-voltage operation make it suitable for various applications in different fields. However, its limited number of I/O pins and potential need for voltage level translation are important factors to consider when choosing this device.