PCF8579H/1,157

Product Overview

The PCF8579H/1,157 is a versatile integrated circuit belonging to the category of I/O expanders. It is commonly used to extend the input/output capabilities of microcontrollers and other digital systems. The PCF8579H/1,157 is known for its high reliability, low power consumption, and compact package, making it suitable for various applications.

Basic Information

• Category: I/O Expander
• Use: Extending input/output capabilities of digital systems
• Characteristics: High reliability, low power consumption
• Package: Compact form factor
• Essence: Enhancing the functionality of microcontrollers and digital systems
• Packaging/Quantity: Typically available in reels or tubes containing multiple units

Specifications

The PCF8579H/1,157 features include: - 16 I/O pins - Wide operating voltage range - Low standby current - I2C-bus interface

Detailed Pin Configuration

The PCF8579H/1,157 pinout consists of 24 pins, including power supply, ground, I2C-bus interface, and 16 I/O pins. The detailed pin configuration is as follows:

| Pin Number | Name | Description | |------------|---------------|---------------------------------------| | 1 | VDD | Power supply voltage | | 2 | SDA | I2C-bus serial data input/output | | 3 | SCL | I2C-bus serial clock input | | ... | ... | ... | | 23 | P15 | I/O port 15 | | 24 | GND | Ground |

Functional Features

The PCF8579H/1,157 offers the following functional features: - Bi-directional I/O expansion - Interrupt output capability - Address selection for multiple devices on the I2C-bus

Advantages and Disadvantages

Advantages

• Low power consumption
• Simplified I/O expansion
• Wide operating voltage range

Disadvantages

• Limited number of I/O pins
• Dependency on I2C-bus interface for communication

Working Principles

The PCF8579H/1,157 operates by interfacing with a microcontroller or digital system through the I2C-bus interface. It extends the I/O capabilities of the host system by providing 16 additional bi-directional I/O pins, which can be controlled and monitored using the I2C-bus protocol.

Detailed Application Field Plans

The PCF8579H/1,157 finds application in various fields, including: - Industrial automation - Consumer electronics - Automotive electronics - IoT devices - Robotics

Detailed and Complete Alternative Models

Some alternative models to the PCF8579H/1,157 include: - MCP23017 - MAX7311 - SX1509 - PCA9555

In conclusion, the PCF8579H/1,157 is a reliable and efficient I/O expander that enhances the functionality of digital systems. Its compact package, low power consumption, and wide operating voltage range make it a popular choice for diverse applications.

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