PCA9555DGVR

Product Overview

Category

PCA9555DGVR belongs to the category of integrated circuits (ICs).

Use

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

Characteristics

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

Package

PCA9555DGVR is available in a small form factor package, known as VSSOP-24.

Essence

The essence of PCA9555DGVR lies in its ability to provide additional I/O ports for electronic devices, enabling them to connect and control multiple external components.

Packaging/Quantity

This product is typically packaged in reels, with each reel containing a quantity of 3000 units.

Specifications

• Supply voltage: 2.3V to 5.5V
• Input voltage range: GND to VDD
• Operating temperature range: -40°C to +85°C
• Maximum output current: 25mA per I/O pin
• Maximum total current through all I/O pins: 200mA

Detailed Pin Configuration

1. A0: Address input bit 0
2. A1: Address input bit 1
3. A2: Address input bit 2
4. INT: Interrupt output
5. SDA: Serial data input/output
6. SCL: Serial clock input
7. RESET: Reset input
8. P0-P7: I/O port pins

Functional Features

• Expandable I/O ports: PCA9555DGVR provides 16 I/O ports that can be expanded using the I2C-bus interface.
• Interrupt capability: The interrupt output pin (INT) allows the device to notify the host microcontroller when a change in input status occurs.
• Noise suppression: Schmitt trigger inputs help suppress noise and ensure reliable signal detection.
• Polarity inversion: The polarity inversion register allows for easy inversion of input port data.

Advantages and Disadvantages

Advantages

• Easy integration with existing I2C-bus systems
• Low power consumption
• Compact package size
• High reliability and robustness

Disadvantages

• Limited number of I/O ports (16)
• Requires an external microcontroller for full functionality

Working Principles

PCA9555DGVR operates by communicating with a host microcontroller through the I2C-bus interface. The microcontroller sends commands and data to the PCA9555DGVR, which then controls the I/O ports accordingly. Changes in input status are detected and can trigger interrupts to notify the microcontroller.

Detailed Application Field Plans

PCA9555DGVR finds applications in various fields, including but not limited to: 1. Home automation systems 2. Industrial control systems 3. Automotive electronics 4. Internet of Things (IoT) devices 5. Robotics

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to PCA9555DGVR include: 1. MCP23017 2. MAX7313 3. TCA9539 4. PCF8575 5. SX1509

These alternative models provide comparable I/O expansion capabilities and can be considered based on specific project requirements.

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