PCA9551BS,118

Product Overview

Category

PCA9551BS,118 belongs to the category of integrated circuits (ICs).

Use

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

Characteristics

• Integrated circuit
• I2C-bus interface
• 8-bit I/O expander
• Low standby current consumption
• Wide operating voltage range

Package

PCA9551BS,118 is available in a small outline package (SOT96-1), also known as a thin shrink small outline package (TSSOP).

Essence

The essence of PCA9551BS,118 lies in its ability to provide additional I/O ports for digital devices, enabling them to connect and control multiple external components.

Packaging/Quantity

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

Specifications

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

Detailed Pin Configuration

The PCA9551BS,118 has a total of 16 pins, which are assigned specific functions as follows:

1. SDA: Serial Data Input/Output
2. SCL: Serial Clock Input
3. A0: Address Input Bit 0
4. A1: Address Input Bit 1
5. RESET: Reset Input
6. P0-P7: General Purpose I/O Pins

Functional Features

• Expandable I/O capability
• Bidirectional I/O ports
• Individual programmable I/O pin configurations
• Internal power-on reset
• Noise filter on SDA/SCL inputs

Advantages and Disadvantages

Advantages

• Easy integration with microcontrollers
• Low power consumption
• Wide operating voltage range allows for versatile applications
• Compact package size enables space-saving designs

Disadvantages

• Limited number of I/O pins (8 in total)
• Requires an external pull-up resistor for proper I2C communication

Working Principles

PCA9551BS,118 utilizes the I2C-bus interface to communicate with the controlling device. It acts as an I/O expander by providing additional digital I/O ports. The device can be controlled and configured through the I2C bus, allowing for flexible and customizable I/O configurations.

Detailed Application Field Plans

PCA9551BS,118 finds applications in various fields, including but not limited to: - Home automation systems - Industrial control systems - Internet of Things (IoT) devices - Robotics - Automotive electronics

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to PCA9551BS,118 are: - PCA9554PW,112 - MCP23008-E/SO - MAX7313ATG+ - PCF8574T/3,518

These alternative models provide comparable I/O expansion capabilities and can be considered as substitutes based on specific application requirements.

In conclusion, PCA9551BS,118 is a versatile integrated circuit that enhances the I/O capabilities of digital devices. Its compact size, low power consumption, and wide operating voltage range make it suitable for various applications. However, its limited number of I/O pins and the need for an external pull-up resistor are notable considerations.