PCA9554AD,118

Product Overview

Category

PCA9554AD,118 belongs to the category of integrated circuits (ICs).

Use

The PCA9554AD,118 is commonly used as an I/O expander for microcontroller-based systems. It provides additional input/output (I/O) ports, allowing the microcontroller to interface with a larger number of peripheral devices.

Characteristics

• I2C-bus interface compatibility
• 8-bit remote I/O port with interrupt capability
• Low standby current consumption
• Schmitt trigger inputs for noise suppression
• Open-drain interrupt output
• Polarity inversion register for input port data

Package

The PCA9554AD,118 is available in a small outline package (SOP) with 16 pins.

Essence

The essence of PCA9554AD,118 lies in its ability to expand the I/O capabilities of microcontrollers, enabling them to connect and control a greater number of external devices.

Packaging/Quantity

The PCA9554AD,118 is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

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

Detailed Pin Configuration

1. SDA (Serial Data)
2. SCL (Serial Clock)
3. A0 (Address Bit 0)
4. A1 (Address Bit 1)
5. A2 (Address Bit 2)
6. INT (Interrupt Output)
7. P7 (Port 7)
8. P6 (Port 6)
9. P5 (Port 5)
10. P4 (Port 4)
11. P3 (Port 3)
12. P2 (Port 2)
13. P1 (Port 1)
14. P0 (Port 0)
15. GND (Ground)
16. VDD (Supply Voltage)

Functional Features

• I2C-bus interface allows easy communication with microcontrollers.
• 8-bit remote I/O port provides additional input/output capabilities.
• Interrupt capability enables efficient handling of events from peripheral devices.
• Low standby current consumption ensures power efficiency.
• Schmitt trigger inputs suppress noise for reliable operation.
• Open-drain interrupt output simplifies interfacing with microcontrollers.
• Polarity inversion register allows flexibility in interpreting input port data.

Advantages and Disadvantages

Advantages

• Easy integration with microcontroller-based systems.
• Expandable I/O capabilities.
• Efficient event handling through interrupt capability.
• Low power consumption.
• Reliable operation in noisy environments.
• Flexible interpretation of input port data.

Disadvantages

• Limited to 8-bit I/O expansion.
• Requires I2C-bus interface support in the microcontroller.

Working Principles

The PCA9554AD,118 operates by communicating with a microcontroller through the I2C-bus interface. It expands the I/O capabilities of the microcontroller by providing an additional 8-bit remote I/O port. The device can be addressed using three address bits (A0, A1, and A2), allowing multiple PCA9554AD,118 devices to be connected on the same bus. The interrupt output (INT) can be used to signal events from peripheral devices to the microcontroller.

Detailed Application Field Plans

The PCA9554AD,118 finds applications in various fields, including:

1. Home automation systems: Controlling lights, appliances, and sensors.
2. Industrial automation: Interfacing with sensors, actuators, and control systems.
3. Automotive electronics: Managing peripheral devices in vehicles.
4. Internet of Things (IoT): Connecting and controlling IoT devices.
5. Robotics: Expanding I/O capabilities for robot control systems.

Detailed and Complete Alternative Models

1. PCA9554PW,118
2. PCA9554DB,118
3. PCA9554D,112
4. PCA9554PW,112
5. PCA9554BS,118

These alternative models offer similar functionality and can be considered as alternatives to the PCA9554AD,118.

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