PCA9539RPW,112

Product Overview

Category

PCA9539RPW,112 belongs to the category of integrated circuits (ICs).

Use

It is commonly used for controlling and expanding the input/output (I/O) capabilities of microcontrollers or other digital devices.

Characteristics

• High-speed I2C-bus interface
• 16-bit remote I/O expander for I2C-bus applications
• Low standby current consumption
• Schmitt trigger action on all inputs
• Open-drain interrupt output
• Noise filter on SCL/SDA inputs
• ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per JESD22-A115, and 1000 V CDM per JESD22-C101
• Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA

Package

PCA9539RPW,112 is available in a TSSOP package.

Essence

The essence of PCA9539RPW,112 lies in its ability to provide additional I/O ports for digital devices, enabling them to control and monitor a larger number of external components.

Packaging/Quantity

It is typically packaged in reels and comes in quantities of 2500 units per reel.

Specifications

• Supply Voltage: 2.3 V to 5.5 V
• Operating Temperature Range: -40°C to +85°C
• Number of I/O Ports: 16
• I2C Address Range: 0x20 to 0x27

Detailed Pin Configuration

1. A0: I2C address input bit 0
2. A1: I2C address input bit 1
3. A2: I2C address input bit 2
4. INT: Interrupt output
5. SDA: I2C-bus data input/output
6. SCL: I2C-bus clock input
7. RESET: Reset input
8. GND: Ground
9. P0-P7: I/O ports 0-7
10. P8-P15: I/O ports 8-15
11. VCC: Supply voltage

Functional Features

1. I2C-Bus Interface: PCA9539RPW,112 utilizes a high-speed I2C-bus interface for communication with the controlling device.
2. Remote I/O Expansion: It provides 16 additional I/O ports that can be controlled and monitored remotely.
3. Schmitt Trigger Action: All inputs of PCA9539RPW,112 employ Schmitt trigger action, ensuring reliable signal detection even in the presence of noise.
4. Interrupt Output: The open-drain interrupt output pin allows for efficient event-driven processing.
5. ESD Protection: The device offers robust ESD protection, exceeding industry standards.
6. Low Standby Current Consumption: PCA9539RPW,112 minimizes power consumption during standby mode.

Advantages and Disadvantages

Advantages

• Easy integration with microcontrollers or digital devices through the I2C-bus interface.
• Provides additional I/O ports, expanding the capabilities of the controlling device.
• Reliable signal detection due to Schmitt trigger action on all inputs.
• Efficient event-driven processing with the interrupt output feature.
• Robust ESD protection ensures device durability.
• Low standby current consumption helps conserve power.

Disadvantages

• Limited number of I/O ports (16) may not suffice for certain applications requiring a larger number of connections.
• Requires familiarity with I2C-bus communication protocol for proper utilization.

Working Principles

PCA9539RPW,112 operates by receiving commands and data from a controlling device through the I2C-bus interface. It interprets these commands to control the state of its 16 I/O ports. The device can be addressed using different I2C addresses, allowing multiple PCA9539RPW,112 devices to coexist on the same bus.

Detailed Application Field Plans

1. Industrial Automation: PCA9539RPW,112 can be used in industrial automation systems to expand the I/O capabilities of microcontrollers, enabling control and monitoring of various sensors, actuators, and other components.
2. Home Automation: It finds application in home automation systems for managing lighting, security systems, and other connected devices.
3. Internet of Things (IoT): PCA9539RPW,112 can be integrated into IoT devices to provide additional I/O ports for connecting and controlling various sensors, actuators, and peripherals.
4. Robotics: It can be utilized in robotics applications to enhance the I/O capabilities of microcontrollers, facilitating control of motors, sensors, and other robotic components.

Detailed and Complete Alternative Models

1. PCA9555PW,118
2. MCP23017-E/SP