PCA9554ATS,112

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: I/O Expander
• Characteristics: 8-bit I2C-bus and SMBus I/O expander with interrupt output and configuration registers
• Package: TSSOP16
• Essence: The PCA9554ATS,112 is a versatile I/O expander that provides additional input/output pins for microcontrollers or other devices.
• Packaging/Quantity: Available in tape and reel packaging, with 2500 units per reel.

Specifications

• Supply Voltage: 2.3V to 5.5V
• Input/Output Voltage: 0V to VDD
• Maximum Output Current: 25mA per I/O pin
• Operating Temperature Range: -40°C to +85°C
• Communication Interface: I2C-bus and SMBus compatible

Detailed Pin Configuration

The PCA9554ATS,112 has a total of 16 pins, which are assigned as follows: - Pins 1 to 4: SDA (Serial Data) - Pins 5 to 8: SCL (Serial Clock) - Pins 9 to 12: P0 to P3 (General Purpose I/O) - Pins 13 to 16: INT (Interrupt Output)

Functional Features

• 8 programmable I/O pins
• Individual pin direction control (input or output)
• Programmable polarity inversion
• Interrupt output for efficient event notification
• Internal power-on reset
• Low standby current consumption

Advantages and Disadvantages

Advantages: - Provides additional I/O pins without requiring extra microcontroller pins - Flexible configuration options for different applications - Low power consumption - Interrupt feature enhances system efficiency

Disadvantages: - Limited number of I/O pins (8 in total) - Requires I2C or SMBus communication interface

Working Principles

The PCA9554ATS,112 operates as an I/O expander by communicating with a microcontroller or other devices through the I2C-bus or SMBus. It allows the microcontroller to control and monitor the state of the 8 I/O pins. The device can be configured for input or output individually, and the polarity of the inputs can be inverted if needed. The interrupt output provides efficient event notification to the microcontroller.

Detailed Application Field Plans

The PCA9554ATS,112 finds applications in various fields, including: 1. Industrial automation: Used for controlling and monitoring sensors, actuators, and other devices. 2. Home automation: Enables expansion of I/O capabilities for smart home systems. 3. Automotive electronics: Provides additional I/O pins for controlling lights, switches, and other functions. 4. Consumer electronics: Used in devices that require extra I/O pins, such as gaming consoles and home appliances.

Detailed and Complete Alternative Models

1. PCA9554APW,118: Similar to PCA9554ATS,112 but available in TSSOP24 package.
2. PCA9534PW,118: 8-bit I2C-bus and SMBus I/O expander with no interrupt output.
3. MCP23008-E/SO: 8-bit I/O expander with I2C interface and interrupt output.

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