CAT9552WI-T1

Product Overview

Category

CAT9552WI-T1 belongs to the category of integrated circuits (ICs).

Use

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

Characteristics

• High-speed I2C interface
• 16 programmable I/O pins
• Low standby current consumption
• Wide operating voltage range
• Schmitt trigger inputs for noise immunity

Package

The CAT9552WI-T1 is available in a small outline package (SOP) with 24 pins.

Essence

The essence of CAT9552WI-T1 lies in its ability to provide additional I/O pins, enabling efficient communication between microcontrollers and peripheral devices.

Packaging/Quantity

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

Specifications

• Supply Voltage: 1.8V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• I/O Voltage Level: 1.8V to 5.5V
• Maximum I/O Current: ±10mA
• Standby Current: 1μA (typical)

Detailed Pin Configuration

The CAT9552WI-T1 has a total of 24 pins, each serving a specific function. The pin configuration is as follows:

1. SDA (Serial Data)
2. SCL (Serial Clock)
3. INT (Interrupt Output)
4. GND (Ground)
5. P0-P7 (Programmable I/O Pins)
6. VCC (Supply Voltage)

Functional Features

• Bidirectional I/O ports
• Programmable I/O direction control
• Internal pull-up resistors
• Interrupt output for event notification
• Address selection for multiple device operation

Advantages and Disadvantages

Advantages

• Compact size and low power consumption
• Wide operating voltage range allows compatibility with various systems
• High-speed I2C interface enables fast data transfer
• Schmitt trigger inputs provide noise immunity

Disadvantages

• Limited number of I/O pins (16 in total)
• Lack of built-in protection features for overvoltage or ESD events

Working Principles

CAT9552WI-T1 operates based on the I2C communication protocol. It receives commands from a microcontroller through the SDA and SCL lines, allowing the control of individual I/O pins. The device can be programmed to function as either an input or output port, providing flexibility in system design.

Detailed Application Field Plans

The CAT9552WI-T1 finds applications in various electronic systems, including but not limited to: - Consumer electronics - Industrial automation - Internet of Things (IoT) devices - Automotive electronics - Medical equipment

In consumer electronics, it can be used for keypad scanning, LED control, or general-purpose I/O expansion. In industrial automation, it facilitates sensor interfacing and control signal generation. IoT devices benefit from its compact size and low power consumption. Automotive electronics utilize it for switch matrix control and lighting control. Medical equipment can employ it for patient monitoring and control interfaces.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to CAT9552WI-T1 include: - MCP23017 - PCF8574 - MAX7313 - TCA9539

These alternatives may have slight variations in specifications and pin configurations, but they serve the same purpose of I/O expansion in electronic systems.

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