PCA9550D,118

Product Overview

Category

The PCA9550D,118 belongs to the category of integrated circuits (ICs).

Use

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

Characteristics

• I2C-bus interface compatibility
• 8-bit remote I/O port with interrupt capability
• Low standby current consumption
• Schmitt-trigger action on all inputs
• Open-drain interrupt output
• Noise filter on SDA/SCL inputs
• Latched outputs with high-current drive capability
• ESD protection exceeds JESD 22

Package

The PCA9550D,118 is available in a small outline package (SOT96-1), also known as a Thin Shrink Small Outline Package (TSSOP).

Essence

The essence of the PCA9550D,118 lies in its ability to provide additional I/O ports for electronic devices, enabling efficient communication and control between different components.

Packaging/Quantity

This product is typically packaged in reels, with each reel containing a specific quantity of PCA9550D,118 ICs. The exact quantity per reel may vary depending on the manufacturer's specifications.

Specifications

• Supply voltage range: 2.3 V to 5.5 V
• Input voltage range: 0 V to VDD
• Output voltage range: 0 V to VDD
• Operating temperature range: -40°C to +85°C
• Maximum clock frequency: 400 kHz
• Maximum I/O sink/source current: ±10 mA

Detailed Pin Configuration

The PCA9550D,118 features a total of 16 pins, each serving a specific purpose. The pin configuration is as follows:

1. A0: Address input bit 0
2. A1: Address input bit 1
3. A2: Address input bit 2
4. GND: Ground
5. SDA: Serial data input/output
6. SCL: Serial clock input
7. INT: Interrupt output
8. P0-P7: I/O ports 0 to 7

Functional Features

• I2C-bus interface compatibility allows easy integration into existing systems.
• Schmitt-trigger action on all inputs ensures reliable signal processing, even in the presence of noise.
• Open-drain interrupt output enables efficient communication with external devices.
• Latched outputs with high-current drive capability facilitate control of various components.
• ESD protection exceeds JESD 22 standards, ensuring robustness against electrostatic discharge.

Advantages and Disadvantages

Advantages

• Compact size and low standby current consumption make it suitable for space-constrained applications.
• Compatibility with the I2C-bus interface simplifies integration into existing systems.
• Schmitt-trigger action enhances noise immunity, ensuring reliable operation.
• High-current drive capability allows direct control of power-hungry components.

Disadvantages

• Limited number of I/O ports may restrict its use in applications requiring a large number of connections.
• The maximum clock frequency of 400 kHz may limit the speed of data transfer in certain scenarios.

Working Principles

The PCA9550D,118 operates based on the I2C-bus protocol, which enables communication between different ICs using a two-wire serial interface. It acts as an I/O expander by providing additional ports that can be controlled and monitored through the I2C-bus interface. The device receives commands and data from the master device via the SDA and SCL lines, and performs the specified operations on the I/O ports accordingly.

Detailed Application Field Plans

The PCA9550D,118 finds application in various fields where additional I/O ports are required. Some potential application areas include:

1. Home automation systems: The device can be used to expand the number of controllable devices, such as lights and appliances.
2. Industrial control systems: It enables efficient control and monitoring of multiple sensors and actuators.
3. Automotive electronics: The PCA9550D,118 can be utilized for I/O expansion in automotive applications, such as controlling lighting systems or interfacing with external sensors.

Detailed and Complete Alternative Models

1. PCA9550PW,112: Similar to PCA9550D,118 but available in a different package (TSSOP20).
2. PCA9550BS,118: Offers the same functionality as PCA9550D,118 but comes in a smaller package (SOT23-6).

These alternative models provide similar features and can be considered as substitutes based on specific requirements and constraints.

In conclusion, the PCA9550D,118 is an integrated circuit that serves as an I/O expander, providing additional ports for communication and control purposes. Its compatibility with the I2C-bus interface, low standby current consumption, and high-current drive capability make