NXP USA Inc.
Maaaring representasyon ang larawan.
Tingnan ang mga detalye para sa mga detalye ng produkto.
PCA9674D,512
Tingnan ang Detalye DataSheets

PCA9674D,512

Product Overview

Category

PCA9674D,512 belongs to the category of integrated circuits (ICs).

Use

The PCA9674D,512 is commonly used as an I/O expander in various electronic devices and systems.

Characteristics

  • The IC provides 8-bit parallel input/output ports.
  • It operates at a voltage range of 2.3V to 5.5V.
  • The PCA9674D,512 supports both push-pull and open-drain output configurations.
  • It has a maximum frequency of 400 kHz for I²C-bus communication.
  • This IC is compatible with both 3.3V and 5V logic levels.

Package

PCA9674D,512 is available in a small outline package (SOT96-1) or a shrink small outline package (SSOP20).

Essence

The essence of PCA9674D,512 lies in its ability to expand the number of available I/O pins in a system, thereby increasing the connectivity options.

Packaging/Quantity

The PCA9674D,512 is typically packaged in reels, with each reel containing 2500 units.

Specifications

  • Supply Voltage: 2.3V to 5.5V
  • Operating Temperature Range: -40°C to +85°C
  • Number of I/O Ports: 8
  • Communication Interface: I²C-bus
  • Maximum Frequency: 400 kHz
  • Logic Compatibility: 3.3V and 5V

Detailed Pin Configuration

The PCA9674D,512 features a 20-pin configuration. The pinout details are as follows:

  1. SDA - Serial Data Input/Output
  2. SCL - Serial Clock Input
  3. RESET - Reset Input 4-11. P0-P7 - Parallel I/O Ports 12-19. NC - No Connection
  4. VCC - Supply Voltage

Functional Features

  • Bidirectional I/O ports with programmable pull-up resistors.
  • Individual port configuration for input or output mode.
  • Interrupt output pin to indicate changes in input states.
  • Software reset function to restore default settings.

Advantages and Disadvantages

Advantages

  • Provides additional I/O ports, expanding connectivity options.
  • Supports both push-pull and open-drain output configurations.
  • Compatible with a wide range of supply voltages.
  • Programmable pull-up resistors simplify circuit design.

Disadvantages

  • Limited number of I/O ports (8 ports).
  • Requires an external microcontroller or host device for control.

Working Principles

The PCA9674D,512 operates based on the I²C-bus communication protocol. It acts as a slave device, controlled by a master device (typically a microcontroller). The master device sends commands and data to the PCA9674D,512 through the SDA and SCL lines. The IC interprets these commands to configure its I/O ports as inputs or outputs, set pull-up resistors, and monitor input states. Changes in input states can trigger an interrupt signal to the master device.

Detailed Application Field Plans

The PCA9674D,512 finds applications in various fields, including but not limited to:

  1. Industrial automation systems
  2. Home automation and smart devices
  3. Automotive electronics
  4. Robotics and control systems
  5. Internet of Things (IoT) devices

Detailed and Complete Alternative Models

  1. PCA9670: 8-bit I/O expander with similar features but different package options.
  2. MCP23008: 8-bit I/O expander with enhanced ESD protection and higher maximum frequency.
  3. PCF8574: 8-bit I/O expander with lower supply voltage range and different pin configuration.

These alternative models offer similar functionality to the PCA9674D,512 and can be considered based on specific requirements and preferences.

Word count: 530 words

Maglista ng 10 karaniwang tanong at sagot na nauugnay sa aplikasyon ng PCA9674D,512 sa mga teknikal na solusyon

Sure! Here are 10 common questions and answers related to the application of PCA9674D,512 in technical solutions:

  1. Q: What is PCA9674D,512? A: PCA9674D,512 is a 16-bit I/O expander with an I2C interface, which allows for easy expansion of digital inputs and outputs in various applications.

  2. Q: What is the maximum number of PCA9674D,512 devices that can be connected together? A: Up to 8 PCA9674D,512 devices can be connected together on the same I2C bus, providing a total of 128 additional I/O pins.

  3. Q: How do I communicate with PCA9674D,512 using I2C? A: You can communicate with PCA9674D,512 by sending I2C commands and data through the SDA (data) and SCL (clock) lines of the I2C bus.

  4. Q: Can PCA9674D,512 be used as both input and output expanders? A: Yes, PCA9674D,512 can be configured as either input or output expanders on a per-pin basis, allowing flexibility in different applications.

  5. Q: What is the voltage range supported by PCA9674D,512? A: PCA9674D,512 supports a wide voltage range from 2.3V to 5.5V, making it compatible with various microcontrollers and systems.

  6. Q: How much current can each pin of PCA9674D,512 sink/source? A: Each pin of PCA9674D,512 can sink/source up to 25mA of current, making it suitable for driving LEDs, relays, and other low-power devices.

  7. Q: Can PCA9674D,512 be used in automotive applications? A: Yes, PCA9674D,512 is automotive-grade and can operate in harsh environments, making it suitable for automotive applications.

  8. Q: Does PCA9674D,512 have built-in pull-up resistors? A: Yes, PCA9674D,512 has programmable internal pull-up resistors that can be enabled or disabled on a per-pin basis.

  9. Q: Can I use multiple PCA9674D,512 devices with different I2C addresses in the same system? A: Yes, each PCA9674D,512 device can be assigned a unique I2C address using its hardware address pins, allowing multiple devices to coexist on the same bus.

  10. Q: Are there any development tools or libraries available for PCA9674D,512? A: Yes, NXP provides various development tools, software libraries, and example codes to help you quickly integrate PCA9674D,512 into your application.

Please note that these answers are general and may vary depending on the specific implementation and requirements of your technical solution.