PCA9539BSHP

Product Overview

Category: Integrated Circuit (IC)

Use: The PCA9539BSHP is a versatile 16-bit I2C-bus I/O expander designed for general-purpose input/output expansion in various electronic applications.

Characteristics: - 16 programmable GPIO pins - I2C-bus interface for easy communication with microcontrollers - Low standby current consumption - Wide operating voltage range - High noise immunity - ESD protection on all pins

Package: The PCA9539BSHP is available in a small-sized, surface-mount package, making it suitable for compact designs and space-constrained applications.

Essence: This IC serves as an interface between a microcontroller and external devices, providing additional input/output capabilities beyond what the microcontroller alone can offer.

Packaging/Quantity: The PCA9539BSHP is typically sold in reels or tubes, containing a specified quantity of ICs per package.

Specifications

• Supply Voltage Range: 2.3V to 5.5V
• Input Voltage Range: 0V to VDD
• Output Voltage Range: 0V to VDD
• Maximum Output Current: 25mA per channel
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The PCA9539BSHP features a 24-pin package with the following pin configuration:

1. SDA - Serial Data Input/Output 2. SCL - Serial Clock Input 3. A0 - Address Select Bit 0 4. A1 - Address Select Bit 1 5. RESET - Reset Input 6-21. P0-P15 - General Purpose Input/Output Pins 22. GND - Ground 23. VDD - Supply Voltage 24. INT - Interrupt Output

Functional Features

• I2C-bus interface allows easy connection to microcontrollers and other devices supporting the I2C protocol.
• Each GPIO pin can be individually configured as an input or output, allowing flexible usage based on application requirements.
• Programmable interrupt output provides a convenient way to notify the microcontroller of changes in input states.
• Internal pull-up resistors can be enabled for input pins, simplifying external circuitry.

Advantages and Disadvantages

Advantages: - Versatile and flexible I/O expansion solution - Easy integration with microcontrollers through I2C-bus interface - Low power consumption - Compact package size suitable for space-constrained designs - Robust ESD protection on all pins

Disadvantages: - Limited maximum output current per channel (25mA) - Requires additional components (microcontroller, I2C bus) for full functionality

Working Principles

The PCA9539BSHP operates by communicating with a microcontroller or other devices using the I2C-bus protocol. It acts as an intermediary between the microcontroller and external devices, providing additional input/output capabilities. The microcontroller sends commands and data to the PCA9539BSHP via the I2C-bus, configuring the GPIO pins as inputs or outputs and controlling their states. The IC can also generate interrupts to notify the microcontroller of changes in input states.

Detailed Application Field Plans

The PCA9539BSHP finds applications in various fields, including but not limited to: - Industrial automation - Consumer electronics - Automotive systems - Internet of Things (IoT) devices - Robotics - Medical equipment

In industrial automation, it can be used for controlling sensors, actuators, and other peripheral devices. In consumer electronics, it can enable additional user interface options or expand connectivity. In automotive systems, it can assist in controlling lighting, switches, or sensors. In IoT devices, it can provide additional I/O capabilities for sensor integration. In robotics and medical equipment, it can be utilized for controlling various components and interfaces.

Detailed and Complete Alternative Models

• PCA9534: 8-bit I2C-bus I/O expander
• MCP23017: 16-bit I2C-bus I/O expander with interrupt output
• MAX7313: 16-bit I2C-bus I/O expander with LED driver functionality
• PCF8574: 8-bit I2C-bus I/O expander with open-drain outputs

These alternative models offer similar functionality to the PCA9539BSHP and can be considered based on specific application requirements.

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