PCA9551D,118

Product Overview

Category

The PCA9551D,118 belongs to the category of integrated circuits (ICs).

Use

This product is commonly used for input/output (I/O) expansion in various electronic devices and systems.

Characteristics

• The PCA9551D,118 is a 8-bit I/O expander with an I2C interface.
• It provides additional digital I/O ports, allowing for increased connectivity and flexibility in electronic designs.
• This IC operates at a voltage range of 2.3V to 5.5V, making it suitable for a wide range of applications.
• It offers low standby current consumption, making it energy-efficient.
• The PCA9551D,118 is designed to be compatible with both 3.3V and 5V logic levels.

Package

The PCA9551D,118 is available in a small outline package (SOT96-1), which is a surface-mount package.

Essence

The essence of the PCA9551D,118 lies in its ability to expand the number of available I/O ports in electronic systems, enabling greater connectivity and functionality.

Packaging/Quantity

This product is typically packaged in reels, with a quantity of 2500 units per reel.

Specifications

• Number of I/O Ports: 8
• Interface: I2C
• Voltage Range: 2.3V to 5.5V
• Logic Compatibility: 3.3V and 5V
• Standby Current: Low
• Package Type: SOT96-1
• Quantity per Reel: 2500 units

Detailed Pin Configuration

The PCA9551D,118 features the following pin configuration:

| Pin Name | Description | |----------|-------------| | A0 | Address Input Bit 0 | | A1 | Address Input Bit 1 | | A2 | Address Input Bit 2 | | SDA | I2C Serial Data Input/Output | | SCL | I2C Serial Clock Input | | RESET | Reset Input | | P0-P7 | I/O Ports 0-7 |

Functional Features

• The PCA9551D,118 provides bidirectional I/O expansion through the I2C interface.
• It allows for individual configuration of each I/O port as input or output.
• This IC supports internal pull-up resistors for each I/O port.
• It offers interrupt capability for efficient event-driven designs.
• The PCA9551D,118 features a reset function to restore default settings.

Advantages and Disadvantages

Advantages

• Enables easy expansion of I/O ports in electronic systems.
• Compatible with both 3.3V and 5V logic levels.
• Low standby current consumption for energy efficiency.
• Supports interrupt capability for efficient event handling.

Disadvantages

• Limited number of I/O ports (8 in total).
• Requires an I2C interface for communication.

Working Principles

The PCA9551D,118 operates by communicating with a microcontroller or other devices through the I2C interface. It receives commands and data via the SDA and SCL lines, allowing for configuration of individual I/O ports as input or output. The IC can be controlled to read or write digital values on the I/O ports, expanding the connectivity and functionality of the system.

Detailed Application Field Plans

The PCA9551D,118 finds applications in various fields, including but not limited to:

1. Industrial automation: Used for I/O expansion in control systems, enabling connection to multiple sensors and actuators.
2. Consumer electronics: Integrated into devices such as smart home systems, allowing for increased connectivity and control options.
3. Automotive electronics: Employed for expanding I/O capabilities in automotive control units, facilitating communication with various vehicle components.
4. Internet of Things (IoT): Integrated into IoT devices to provide additional I/O ports for sensor inputs and actuator outputs.

Detailed and Complete Alternative Models

1. PCA9551PW,118: Similar to PCA9551D,118 but available in a TSSOP package.
2. PCA9551BS,118: Offers the same functionality as PCA9551D,118 but comes in a smaller SOT23-6 package.
3. PCA9551DB,118: Provides the same features as PCA9551D,118 but is available in a larger SSOP package.

These alternative models offer similar functionality and can be considered as substitutes for the PCA9551D,118 depending on specific design requirements.

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