CAT9554AHV4I-GT2

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: General-purpose I/O Expander
• Characteristics:
  • High Voltage Tolerant Inputs and Outputs
  • Low Standby Current Consumption
  • Wide Operating Voltage Range
  • 16-Bit Remote Bidirectional I/O Port
• Package: TSSOP-24
• Essence: This IC is designed to provide additional general-purpose input/output (GPIO) pins for microcontrollers or other digital devices.
• Packaging/Quantity: The CAT9554AHV4I-GT2 is typically sold in reels of 2500 units.

Specifications

• Supply Voltage Range: 1.8V to 5.5V
• Input Voltage Range: -0.3V to VDD + 0.3V
• Output Voltage Range: -0.3V to VDD + 0.3V
• Maximum Output Current: ±25mA per I/O pin
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The CAT9554AHV4I-GT2 has a total of 24 pins, which are assigned as follows:

| Pin Number | Pin Name | Function | |------------|----------|----------| | 1 | SDA | Serial Data Input/Output | | 2 | SCL | Serial Clock Input | | 3-10 | P0-P7 | Bidirectional I/O Ports | | 11-14 | NC | No Connection | | 15-22 | P10-P17 | Bidirectional I/O Ports | | 23 | RESET | Reset Input | | 24 | VDD | Power Supply |

Functional Features

• Bidirectional I/O Ports: The CAT9554AHV4I-GT2 provides 16 bidirectional I/O ports that can be configured as inputs or outputs.
• High Voltage Tolerant: The inputs and outputs of this IC are designed to tolerate higher voltages, making it suitable for use in systems with varying voltage levels.
• Low Standby Current Consumption: The IC consumes minimal current when in standby mode, reducing power consumption.
• Serial Interface: The IC utilizes a serial interface (SDA and SCL pins) for communication with the microcontroller or other devices.

Advantages

• Provides additional GPIO pins for microcontrollers with limited I/O capabilities.
• Wide operating voltage range allows compatibility with various systems.
• High voltage tolerance makes it suitable for industrial applications.
• Low standby current consumption helps conserve power.

Disadvantages

• Limited number of I/O ports (16 in total).
• Requires external pull-up resistors for proper operation.

Working Principles

The CAT9554AHV4I-GT2 operates by receiving commands from a microcontroller through the serial interface. It can be configured as either an input or output port for each pin individually. When configured as an input, the IC can read the logic level of external signals. When configured as an output, it can drive external devices by providing a high or low logic level.

Detailed Application Field Plans

The CAT9554AHV4I-GT2 is commonly used in various applications, including: - Industrial automation systems - Home automation systems - Automotive electronics - Consumer electronics - Internet of Things (IoT) devices

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the CAT9554AHV4I-GT2 include: - MCP23017 - PCF8574 - MAX7313

These alternative models provide general-purpose I/O expansion capabilities and can be considered based on specific requirements and compatibility with the target system.

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