TCA9534DWT

Product Overview

Category

TCA9534DWT 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.

Characteristics

• TCA9534DWT is a 16-bit I/O expander with an I2C interface.
• It provides 16 general-purpose parallel input/output pins.
• The device operates at a voltage range of 1.65V to 5.5V.
• It has built-in programmable interrupt functions.
• TCA9534DWT is compatible with both 3.3V and 5V systems.

Package

The TCA9534DWT IC comes in a small outline package (SOT-24) which is surface mountable.

Essence

The essence of TCA9534DWT lies in its ability to expand the number of available I/O pins in electronic devices, thereby enhancing their functionality.

Packaging/Quantity

Typically, TCA9534DWT is packaged in reels containing 2500 units per reel.

Specifications

• Supply Voltage Range: 1.65V to 5.5V
• Number of I/O Pins: 16
• Interface Type: I2C
• Operating Temperature Range: -40°C to +85°C
• Package Type: SOT-24

Detailed Pin Configuration

The TCA9534DWT IC has a total of 20 pins. The pin configuration is as follows:

1. SDA (Serial Data)
2. SCL (Serial Clock)
3. A0 (Address Bit 0)
4. A1 (Address Bit 1)
5. A2 (Address Bit 2)
6. GND (Ground)
7. P00 (General Purpose I/O Pin 0)
8. P01 (General Purpose I/O Pin 1)
9. P02 (General Purpose I/O Pin 2)
10. P03 (General Purpose I/O Pin 3)
11. P04 (General Purpose I/O Pin 4)
12. P05 (General Purpose I/O Pin 5)
13. P06 (General Purpose I/O Pin 6)
14. P07 (General Purpose I/O Pin 7)
15. P10 (General Purpose I/O Pin 8)
16. P11 (General Purpose I/O Pin 9)
17. P12 (General Purpose I/O Pin 10)
18. P13 (General Purpose I/O Pin 11)
19. P14 (General Purpose I/O Pin 12)
20. VCC (Supply Voltage)

Functional Features

• The TCA9534DWT IC provides bidirectional I/O expansion for the two-line I2C bus.
• It supports both input and output operations on each of its 16 pins.
• The device allows individual pin configuration, enabling flexibility in usage.
• TCA9534DWT has built-in programmable interrupt functions that can be triggered based on pin state changes.

Advantages and Disadvantages

Advantages

• Compact size and surface mountable package.
• Wide operating voltage range allows compatibility with various systems.
• Programmable interrupt functions enhance system responsiveness.
• Individual pin configuration offers flexibility in usage.

Disadvantages

• Limited number of I/O pins compared to some other I/O expanders.
• Requires an I2C interface for communication.

Working Principles

The TCA9534DWT IC works by utilizing the I2C interface to communicate with a microcontroller or other devices. It expands the available I/O pins by providing 16 additional general-purpose I/O pins. These pins can be individually configured as inputs or outputs based on the system requirements. The device also supports programmable interrupt functions, allowing for efficient handling of pin state changes.

Detailed Application Field Plans

The TCA9534DWT IC finds applications in various fields, including but not limited to:

1. Industrial automation systems
2. Consumer electronics
3. Automotive electronics
4. Internet of Things (IoT) devices
5. Robotics
6. Medical equipment
7. Home automation systems

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to TCA9534DWT are:

1. MCP23017 - 16-Bit I/O Expander with I2C Interface
2. PCF8574 - Remote 8-Bit I/O Expander for I2C-bus
3. MAX7313 - 16-Port I/O Expander with LED Intensity Control

These alternative models can be considered based on specific project requirements and compatibility with existing systems.

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