CAT9555HV6I-GT2

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital I/O Expander
• Characteristics: High Voltage, 16-bit I/O Expander
• Package: TSSOP-24
• Essence: The CAT9555HV6I-GT2 is a high-voltage digital I/O expander designed for various applications that require additional input/output pins. It provides 16 programmable GPIO (General Purpose Input/Output) pins, allowing users to expand the number of I/Os available on their microcontroller or other devices.
• Packaging/Quantity: The CAT9555HV6I-GT2 is typically sold in reels containing 2500 units.

Specifications

• Supply Voltage: 2.7V to 5.5V
• High-Voltage I/O: Up to 18V
• Number of I/O Pins: 16
• Interface: I2C (Inter-Integrated Circuit)
• Operating Temperature Range: -40°C to +85°C
• Package Type: TSSOP-24

Detailed Pin Configuration

The CAT9555HV6I-GT2 has a total of 24 pins in a TSSOP package. 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. P0 (GPIO Pin 0)
8. P1 (GPIO Pin 1)
9. P2 (GPIO Pin 2)
10. P3 (GPIO Pin 3)
11. P4 (GPIO Pin 4)
12. P5 (GPIO Pin 5)
13. P6 (GPIO Pin 6)
14. P7 (GPIO Pin 7)
15. P8 (GPIO Pin 8)
16. P9 (GPIO Pin 9)
17. P10 (GPIO Pin 10)
18. P11 (GPIO Pin 11)
19. P12 (GPIO Pin 12)
20. P13 (GPIO Pin 13)
21. P14 (GPIO Pin 14)
22. P15 (GPIO Pin 15)
23. VCC (Supply Voltage)
24. NC (No Connection)

Functional Features

• I2C Interface: The CAT9555HV6I-GT2 utilizes the I2C interface for communication, allowing easy integration with microcontrollers and other devices.
• High-Voltage Capability: This IC supports high-voltage I/Os up to 18V, making it suitable for applications that require higher voltage levels.
• Programmable GPIO Pins: The 16 GPIO pins can be individually configured as inputs or outputs, providing flexibility in various applications.
• Interrupt Output: The device can generate an interrupt signal based on the status of the input pins, allowing efficient event-driven designs.

Advantages and Disadvantages

Advantages: - High-voltage compatibility expands the range of applications. - Programmable GPIO pins offer flexibility and customization. - Interrupt output enhances efficiency in event-driven systems. - Compact TSSOP package allows for space-saving designs.

Disadvantages: - Limited number of I/O pins compared to some other expanders. - Requires I2C interface support from the host device.

Working Principles

The CAT9555HV6I-GT2 operates by communicating with a host device (e.g., microcontroller) through the I2C interface. The host device sends commands and data to configure the GPIO pins as inputs or outputs. The IC monitors the input pins and provides corresponding output states based on the programmed configuration. It can also generate an interrupt signal to notify the host device of specific events or changes in the input pin status.

Detailed Application Field Plans

The CAT9555HV6I-GT2 finds applications in various fields, including:

1. Industrial Automation: Used for controlling sensors, actuators, and other devices in industrial automation systems.
2. Automotive Electronics: Enables expansion of I/Os in automotive control units, allowing integration of additional functionalities.
3. Home Automation: Provides additional I/Os for home automation systems, facilitating control of lights, appliances, and security devices.
4. Internet of Things (IoT): Supports IoT devices by expanding the number of available I/Os for sensor interfacing and data communication.
5. Consumer Electronics: Used in devices such as smart TVs, gaming consoles, and audio systems to enhance connectivity and control capabilities.

Detailed and Complete Alternative Models

• MCP23017: 16-bit I/O expander with I2C interface, compatible with 3.3V and 5V systems.