PCA9554D,118

Product Overview

Category

The PCA9554D,118 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
• 8-bit remote I/O port with interrupt
• 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

Package

The PCA9554D,118 is available in a small outline package (SOT96-1), also known as SO-8.

Essence

The essence of this product lies in its ability to provide additional I/O ports for electronic devices, enhancing their functionality and flexibility.

Packaging/Quantity

The PCA9554D,118 is typically packaged in reels, containing a quantity of 2500 units per reel.

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

Detailed Pin Configuration

The PCA9554D,118 features an 8-pin configuration:

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. VDD: Supply voltage

Functional Features

• I2C-bus interface allows easy communication with microcontrollers or other devices
• Interrupt output provides a signal to the host when an input changes state
• Schmitt trigger action ensures reliable input signal detection, even in noisy environments
• Latched outputs with high-current drive capability enable direct control of external devices

Advantages and Disadvantages

Advantages

• Compact size and low power consumption make it suitable for portable devices
• Compatibility with I2C-bus interface simplifies integration into existing systems
• Noise filter on SDA/SCL inputs enhances signal integrity

Disadvantages

• Limited number of I/O ports may restrict its use in applications requiring extensive I/O expansion
• Lack of built-in protection features may require additional circuitry for robust operation

Working Principles

The PCA9554D,118 operates based on the I2C-bus protocol. It communicates with a microcontroller or other devices through the SDA and SCL lines. The device can be addressed using the A0, A1, and A2 pins, allowing multiple PCA9554D,118 ICs to coexist on the same bus.

The inputs of the PCA9554D,118 are equipped with Schmitt trigger action, ensuring reliable detection of input signals. When an input changes state, the interrupt output (INT) is triggered, providing a signal to the host device.

The outputs of the PCA9554D,118 are latched and capable of driving high currents, enabling direct control of external devices such as LEDs, relays, or motors.

Detailed Application Field Plans

The PCA9554D,118 finds applications in various fields, including but not limited to:

1. Industrial automation: Used for I/O expansion in programmable logic controllers (PLCs) and industrial control systems.
2. Consumer electronics: Integrated into smart home devices, gaming consoles, and audio/video equipment for enhanced connectivity and control capabilities.
3. Automotive industry: Employed in vehicle control modules for expanding I/O capabilities and interfacing with sensors and actuators.
4. Internet of Things (IoT): Integrated into IoT devices to provide additional I/O ports for sensor inputs and actuator outputs.

Detailed and Complete Alternative Models

1. PCA9554PW,118: Similar to PCA9554D,118 but available in a TSSOP package.
2. PCA9554DB,118: Offers the same functionality as PCA9554D,118 but comes in a smaller SO-14 package.
3. PCA9554RGYR: RoHS-compliant version of PCA9554D,118, suitable for environmentally conscious applications.

These alternative models provide similar features and functionality, allowing users to choose the most suitable option based on their specific requirements.

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