PCA9539PWRE4

Product Overview

Category: Integrated Circuit (IC)

Use: The PCA9539PWRE4 is a versatile 16-bit I2C-bus and SMBus I/O expander, designed for general-purpose input/output expansion in various applications.

Characteristics: - 16 programmable GPIO pins - I2C-bus/SMBus interface compatibility - Low standby current consumption - Wide operating voltage range - High noise immunity - ESD protection

Package: TSSOP-24

Essence: The PCA9539PWRE4 is an essential component for expanding the number of available input/output pins in electronic systems. It provides flexibility and convenience in controlling and monitoring multiple devices through a single I2C-bus or SMBus interface.

Packaging/Quantity: The PCA9539PWRE4 is typically sold in reels containing 2500 units per reel.

Specifications

• Operating Voltage Range: 2.3V to 5.5V
• Supply Current:
  • Standby Mode: 1 μA (typical)
  • Active Mode: 1.6 mA at 100 kHz (typical)
• I2C-bus/SMBus Compatibility: Yes
• Number of GPIO Pins: 16
• Input/Output Voltage Levels: 0V to VDD
• ESD Protection: ±2000V Human Body Model (HBM), ±200V Machine Model (MM)

Pin Configuration

The PCA9539PWRE4 features a TSSOP-24 package with the following pin configuration:

+----+--+----+ SDA |1 +--+ 20| VDD SCL |2 19| INT A0 |3 18| P7 A1 |4 17| P6 A2 |5 16| P5 GND |6 15| P4 P0 |7 14| P3 P1 |8 13| P2 P2 |9 12| P1 P3 |10 11| P0 +------------+

Functional Features

• Programmable Input/Output Pins: The PCA9539PWRE4 allows each of its 16 GPIO pins to be individually configured as either an input or output, providing flexibility in system design.
• I2C-bus/SMBus Interface: The device supports communication through the popular I2C-bus and SMBus protocols, enabling easy integration into existing systems.
• Interrupt Output: The INT pin can be configured to generate an interrupt signal based on user-defined conditions, allowing efficient event-driven processing.

Advantages and Disadvantages

Advantages: - Versatile and flexible I/O expansion solution - Low power consumption in standby mode - Wide operating voltage range for compatibility with various systems - High noise immunity ensures reliable operation - ESD protection safeguards against electrostatic discharge

Disadvantages: - Limited number of GPIO pins (16) - Requires I2C-bus or SMBus interface support in the host system

Working Principles

The PCA9539PWRE4 operates by receiving commands and data through the I2C-bus or SMBus interface. It interprets these commands to configure the GPIO pins as inputs or outputs and controls their logic levels accordingly. The device also monitors the status of the input pins and generates interrupts when specific conditions are met, allowing the host system to respond promptly.

Detailed Application Field Plans

The PCA9539PWRE4 finds applications in various fields, including but not limited to: - Industrial automation - Consumer electronics - Automotive systems - Internet of Things (IoT) devices - Medical equipment

In industrial automation, it can be used for controlling and monitoring sensors, actuators, and other peripheral devices. In consumer electronics, it enables user interface expansion and device control. Automotive systems benefit from its ability to interface with multiple sensors and control modules. In IoT devices, the PCA9539PWRE4 facilitates efficient management of numerous connected components. Medical equipment can utilize it for expanding input/output capabilities in diagnostic and monitoring devices.

Detailed and Complete Alternative Models

• PCA9555PW: 16-bit I2C-bus and SMBus I/O expander with interrupt output
• MCP23017-E/SP: 16-bit I2C-bus I/O expander with interrupt output and cascading support
• TCA6416AIPWR: 16-bit I2C-bus/SMBus I/O expander with integrated keypad interrupt and reset functions
• MAX7313ATG+: 16-bit I2C-bus/SMBus GPIO