PCA9535ECDWR2G

Product Overview

• Category: Integrated Circuit (IC)
• Use: GPIO Expander
• Characteristics: Low-voltage, I2C-bus and SMBus compatible, 16-bit remote I/O port with interrupt and reset
• Package: SOIC-24
• Essence: Provides additional general-purpose input/output (GPIO) pins for microcontrollers or other digital devices
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: 2.3V to 5.5V
• Number of I/O Pins: 16
• I/O Voltage Level: 1.8V to 5.5V
• I2C-bus Frequency: Up to 400 kHz
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The PCA9535ECDWR2G has a total of 24 pins in the SOIC package. The pin configuration is as follows:

1. SDA - Serial Data Input/Output
2. SCL - Serial Clock Input
3. A0 - Address Select Bit 0
4. A1 - Address Select Bit 1
5. RESET - Active-Low Reset Input
6. INT - Interrupt Output 7-20. P0-P15 - General Purpose Input/Output Pins
7. VDD - Supply Voltage
8. GND - Ground
9. NC - No Connection
10. NC - No Connection

Functional Features

• 16 programmable GPIO pins
• Individual pin direction control (input or output)
• Programmable polarity inversion
• Interrupt output for pin change detection
• Software reset function
• Low standby current consumption

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows compatibility with various systems - I2C-bus and SMBus compatibility enables easy integration with existing designs - Interrupt output simplifies pin change detection - Low standby current consumption helps conserve power

Disadvantages: - Limited number of GPIO pins (16) - Requires external pull-up resistors for I2C-bus communication

Working Principles

The PCA9535ECDWR2G is an I2C-bus controlled GPIO expander. It communicates with a microcontroller or other digital devices through the I2C-bus interface. The device acts as an intermediary, providing additional GPIO pins that can be configured as inputs or outputs. The state of each pin can be read or set via the I2C-bus, allowing for flexible control and monitoring.

Detailed Application Field Plans

The PCA9535ECDWR2G finds applications in various fields, including:

1. Industrial Automation: Used to expand the number of I/O pins in PLCs (Programmable Logic Controllers) and industrial control systems.
2. Consumer Electronics: Integrated into smart home devices, IoT (Internet of Things) products, and remote control systems to provide additional GPIO capabilities.
3. Automotive: Employed in automotive electronics for controlling lights, sensors, and other peripherals.
4. Medical Devices: Utilized to expand the I/O capabilities of medical equipment, such as patient monitoring systems and diagnostic devices.

Detailed and Complete Alternative Models

1. PCA9555PW,112 - 16-bit I2C-bus and SMBus I/O port with interrupt and reset
2. MCP23017-E/SP - 16-bit I/O Expander with I2C Interface
3. MAX7313ATG+ - 16-bit I/O Expander with Serial Interface

These alternative models offer similar functionality to the PCA9535ECDWR2G and can be considered as alternatives based on specific requirements and design constraints.

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