PCF8578HT/1,518

Product Overview

Category

PCF8578HT/1,518 belongs to the category of integrated circuits (ICs).

Use

This product is commonly used as an I/O expander for microcontrollers in various electronic devices.

Characteristics

• PCF8578HT/1,518 is a highly reliable and versatile IC.
• It provides additional input/output (I/O) ports for microcontrollers.
• The IC operates at low power consumption levels.
• It offers high noise immunity and robust performance.
• PCF8578HT/1,518 is compatible with both 3.3V and 5V microcontrollers.

Package

The PCF8578HT/1,518 IC is available in a small outline package (SO) format.

Essence

The essence of PCF8578HT/1,518 lies in its ability to expand the I/O capabilities of microcontrollers, enabling them to interface with a larger number of external devices.

Packaging/Quantity

PCF8578HT/1,518 is typically packaged in reels or tubes, containing a specific quantity of ICs per package.

Specifications

• Supply Voltage: 2.5V to 6V
• Number of I/O Ports: 16
• Operating Temperature Range: -40°C to +85°C
• Input/Output Compatibility: TTL, CMOS

Detailed Pin Configuration

The PCF8578HT/1,518 IC has a total of 20 pins. The pin configuration is as follows:

1. VDD - Supply Voltage
2. GND - Ground
3. SDA - Serial Data Input/Output
4. SCL - Serial Clock Input 5-20. I/O0-I/O15 - I/O Ports

Functional Features

• Bidirectional I/O Ports: Each port can be configured as an input or output.
• I2C Interface: PCF8578HT/1,518 utilizes the I2C bus protocol for communication with microcontrollers.
• Interrupt Output: The IC provides an interrupt signal to the microcontroller when a change in input status is detected.

Advantages and Disadvantages

Advantages

• Easy Integration: PCF8578HT/1,518 can be easily integrated into existing microcontroller-based systems.
• Expandability: It allows for the expansion of I/O capabilities without the need for additional microcontroller pins.
• Low Power Consumption: The IC operates at low power levels, making it suitable for battery-powered devices.

Disadvantages

• Limited I/O Ports: PCF8578HT/1,518 offers 16 I/O ports, which may not be sufficient for applications requiring a large number of external devices.

Working Principles

PCF8578HT/1,518 functions as an I/O expander by utilizing the I2C bus protocol. It communicates with the microcontroller through the SDA (Serial Data) and SCL (Serial Clock) lines. The microcontroller sends commands and data to the IC, which then controls the input/output status of its ports accordingly.

Detailed Application Field Plans

PCF8578HT/1,518 finds applications in various fields, including but not limited to: - Home automation systems - Industrial control systems - Automotive electronics - Medical devices - Consumer electronics

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to PCF8578HT/1,518 are: - MCP23017 - PCA9555 - MAX7313

These alternatives provide comparable I/O expansion capabilities and are widely used in the industry.

Word count: 430 words