PCAL6416AEXX

PCAL6416AEXX

Product Overview

Category

PCAL6416AEXX belongs to the category of integrated circuits (ICs).

Use

It is primarily used for input/output (I/O) expansion in various electronic devices.

Characteristics

• PCAL6416AEXX is a versatile I/O expander with 16 general-purpose input/output pins.
• It operates at a voltage range of 1.65V to 5.5V, making it compatible with a wide range of systems.
• The device supports both open-drain and push-pull output configurations.
• It offers programmable pull-up resistors on each I/O pin.
• PCAL6416AEXX has an interrupt output that can be configured to indicate changes in input states.
• It features a low standby current consumption, making it suitable for battery-powered applications.

Package

PCAL6416AEXX is available in a small footprint package, such as QFN or TSSOP.

Essence

The essence of PCAL6416AEXX lies in its ability to expand the number of I/O pins available in a system, providing flexibility and enabling connectivity with various peripheral devices.

Packaging/Quantity

The product is typically packaged in reels or tubes, with a quantity of several hundred or thousand units per package.

Specifications

• Number of I/O Pins: 16
• Supply Voltage Range: 1.65V to 5.5V
• Output Configuration: Open-drain or push-pull
• Programmable Pull-Up Resistors: Yes
• Interrupt Output: Yes
• Standby Current: Low

Detailed Pin Configuration

The pin configuration of PCAL6416AEXX is as follows:

Pin 1: VCC Pin 2: SDA Pin 3: SCL Pin 4: INT Pin 5-20: I/O0-I/O15 Pin 21: GND

Functional Features

• I/O Expansion: PCAL6416AEXX provides 16 additional I/O pins, allowing for increased connectivity options.
• Programmable Pull-Up Resistors: Each I/O pin can be individually configured with internal pull-up resistors.
• Interrupt Output: The device can generate an interrupt signal to indicate changes in input states.
• Low Standby Current: PCAL6416AEXX consumes minimal power in standby mode, making it suitable for energy-efficient applications.

Advantages and Disadvantages

Advantages

• Versatile I/O expansion solution
• Wide voltage compatibility range
• Supports both open-drain and push-pull output configurations
• Programmable pull-up resistors enhance flexibility
• Low standby current consumption

Disadvantages

• Limited number of I/O pins (16)

Working Principles

PCAL6416AEXX operates by receiving control signals from a microcontroller or other controlling devices. It communicates through the I2C bus protocol using the SDA (Serial Data) and SCL (Serial Clock) pins. The device can be programmed to configure the I/O pins as inputs or outputs, and their corresponding logic levels can be controlled accordingly. The interrupt output pin can be used to trigger an interrupt when there is a change in the input states.

Detailed Application Field Plans

PCAL6416AEXX finds applications in various fields, including but not limited to: - Consumer electronics - Industrial automation - Internet of Things (IoT) devices - Automotive systems - Medical equipment

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to PCAL6416AEXX are: - MCP23017 - PCA9538 - TCA6416A

These models provide comparable I/O expansion capabilities and can be considered as alternatives based on specific requirements.

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