CAT9555YI-T2

Product Overview

Category

The CAT9555YI-T2 belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used for input/output (I/O) expansion in various electronic devices.

Characteristics

• The CAT9555YI-T2 is a 16-bit I/O expander with an I2C interface.
• It operates at a voltage range of 1.8V to 5.5V, making it compatible with a wide range of systems.
• This IC offers high-speed I2C bus communication, allowing for efficient data transfer.
• It has built-in programmable hardware interrupt capability, enabling real-time event detection.
• The CAT9555YI-T2 is designed to be highly reliable and durable, suitable for demanding applications.

Package

This IC is available in a small outline package (SOP) with 24 pins.

Essence

The essence of the CAT9555YI-T2 lies in its ability to expand the number of I/O ports in electronic systems, providing flexibility and convenience in circuit design.

Packaging/Quantity

The CAT9555YI-T2 is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Supply Voltage: 1.8V to 5.5V
• Number of I/O Ports: 16
• Interface: I2C
• Operating Temperature Range: -40°C to +85°C
• Package Type: SOP-24

Detailed Pin Configuration

The CAT9555YI-T2 has a total of 24 pins, which are assigned 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 (Port 0)
8. P1 (Port 1)
9. P2 (Port 2)
10. P3 (Port 3)
11. P4 (Port 4)
12. P5 (Port 5)
13. P6 (Port 6)
14. P7 (Port 7)
15. P10 (Port 10)
16. P11 (Port 11)
17. P12 (Port 12)
18. P13 (Port 13)
19. P14 (Port 14)
20. P15 (Port 15)
21. VCC (Supply Voltage)
22. RESET (Reset Pin)
23. INT (Interrupt Output)
24. NC (No Connection)

Functional Features

• I/O Expansion: The CAT9555YI-T2 provides 16 additional I/O ports, allowing for increased connectivity in electronic systems.
• Programmable Interrupts: It supports hardware interrupts that can be programmed to detect specific events, enhancing system responsiveness.
• Low Power Consumption: This IC is designed to minimize power consumption, making it suitable for battery-powered devices.
• High-Speed Communication: The I2C interface enables fast and efficient data transfer between the IC and the microcontroller.

Advantages and Disadvantages

Advantages

• Compact Size: The small outline package (SOP) allows for space-efficient integration into electronic circuits.
• Versatility: The CAT9555YI-T2 is compatible with a wide range of voltage levels, making it adaptable to various system requirements.
• Reliable Performance: This IC offers high reliability and durability, ensuring stable operation even in demanding environments.

Disadvantages

• Limited I/O Ports: While the CAT9555YI-T2 expands the number of I/O ports, it may still be insufficient for complex systems with extensive connectivity needs.
• Dependency on I2C Interface: The functionality of this IC relies on the I2C interface, which may introduce additional complexity in system design.

Working Principles

The CAT9555YI-T2 operates based on the I2C communication protocol. It acts as a slave device, receiving commands and data from the master device (typically a microcontroller) through the SDA and SCL lines. The IC interprets these commands to control the state of its I/O ports, allowing for input or output operations as required by the system.

Detailed Application Field Plans

The CAT9555YI-T2 finds applications in various fields, including but not limited to: - Consumer Electronics: Used in devices such as smart TVs, gaming consoles, and home automation systems for expanding I/O capabilities. - Industrial Automation: Integrated into control systems and industrial machinery to provide additional I/O ports for sensor inputs and actuator outputs. - Automotive Electronics: Employed in automotive applications for expanding I/O connectivity in vehicle control units and infotainment systems. - Internet of Things (IoT