PCA9535ECMTTXG

Product Overview

Category: Integrated Circuit (IC)

Use: The PCA9535ECMTTXG is a versatile 16-bit I2C-bus I/O expander designed for general-purpose input/output expansion in various electronic applications. It provides easy interfacing between microcontrollers and peripheral devices.

Characteristics: - 16 programmable GPIO pins - I2C-bus interface for communication - Low standby current consumption - Wide operating voltage range - Small package size - RoHS compliant

Package: The PCA9535ECMTTXG is available in a compact 20-pin TSSOP package, which ensures space-saving integration into electronic circuits.

Essence: This IC serves as an interface between microcontrollers and external devices, expanding the number of available input/output pins. It simplifies the design process by providing additional GPIO pins without the need for complex wiring or extensive hardware modifications.

Packaging/Quantity: The PCA9535ECMTTXG is typically sold in reels containing 2500 units per reel.

Specifications

• Supply Voltage Range: 2.3V to 5.5V
• Input/Output Voltage Range: 0V to VDD
• Maximum Output Current: 25mA per channel
• I2C-bus Frequency: Up to 400kHz
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The PCA9535ECMTTXG features a 20-pin TSSOP package with the following pin configuration:

1 NC 2 SDA 3 SCL 4 INT 5 A0 6 A1 7 A2 8 GND 9 P00 10 P01 11 P02 12 P03 13 P04 14 P05 15 P06 16 P07 17 P10 18 P11 19 P12 20 VDD

Functional Features

• I2C-bus interface allows easy communication with microcontrollers.
• Each GPIO pin can be individually configured as an input or output.
• Programmable polarity inversion for input pins.
• Interrupt output pin to indicate changes in input states.
• Low standby current consumption for power efficiency.

Advantages and Disadvantages

Advantages: - Simplifies the design process by providing additional GPIO pins. - Easy integration with microcontrollers through the I2C-bus interface. - Compact package size enables space-saving integration. - Wide operating voltage range allows compatibility with various systems. - RoHS compliant, ensuring environmental friendliness.

Disadvantages: - Limited maximum output current per channel (25mA). - Requires knowledge of I2C-bus protocol for proper usage.

Working Principles

The PCA9535ECMTTXG operates by receiving commands from a microcontroller via the I2C-bus interface. It can be configured as either an input or output device for each GPIO pin individually. The IC monitors the input pins for changes and generates an interrupt signal when a change is detected. This allows the microcontroller to respond promptly to external events.

Detailed Application Field Plans

The PCA9535ECMTTXG finds applications in various fields, including but not limited to: 1. Industrial automation: Controlling sensors, actuators, and other devices. 2. Consumer electronics: Expanding the number of available input/output pins in home appliances, gaming consoles, etc. 3. Automotive electronics: Interface between microcontrollers and external components in vehicles. 4. Internet of Things (IoT): Enabling communication between IoT devices and microcontrollers.

Detailed and Complete Alternative Models

1. PCA9535PW, 16-bit I2C-bus I/O expander in a 24-pin TSSOP package.
2. PCA9555PW, 16-bit I2C-bus/SMBus I/O expander with interrupt output in a 24-pin TSSOP package.
3. MCP23017-E/SP, 16-bit I2C-bus I/O expander with interrupt output in a 28-pin DIP package.

These alternative models offer similar functionality to the PCA9535ECMTTXG and can be considered as alternatives based on specific project requirements.

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