PCA9674D,518
Product Overview
Category
PCA9674D,518 belongs to the category of integrated circuits (ICs).
Use
This product is commonly used for general-purpose parallel input/output (I/O) expansion applications.
Characteristics
- The PCA9674D,518 offers 8-bit I/O port expansion through an I2C-bus interface.
- It provides a simple solution for extending the number of I/Os available in a microcontroller-based system.
- This IC is compatible with both 3.3V and 5V systems.
- It has a low standby current consumption, making it suitable for battery-powered devices.
Package
The PCA9674D,518 is available in a small outline package (SOT96-1), also known as a TSSOP-20 package.
Essence
The essence of PCA9674D,518 lies in its ability to expand the number of I/O ports in a system using the I2C-bus interface.
Packaging/Quantity
This product is typically sold in reels, with each reel containing 2500 units.
Specifications
- Supply Voltage: 2.3V to 5.5V
- I/O Voltage: 2.3V to VDD
- Maximum Output Current: 25mA per I/O pin
- Operating Temperature Range: -40°C to +85°C
- I2C-bus Frequency: Up to 400kHz
Detailed Pin Configuration
The PCA9674D,518 features a total of 20 pins. The pin configuration is as follows:
- SDA - Serial Data Input/Output
- SCL - Serial Clock Input
- RESET - Reset Input
- A0 - Address Input Bit 0
- A1 - Address Input Bit 1
- A2 - Address Input Bit 2
- VSS - Ground
- P0 - I/O Port 0
- P1 - I/O Port 1
- P2 - I/O Port 2
- P3 - I/O Port 3
- P4 - I/O Port 4
- P5 - I/O Port 5
- P6 - I/O Port 6
- P7 - I/O Port 7
- INT - Interrupt Output
- VDD - Supply Voltage
- NC - No Connection
- NC - No Connection
- NC - No Connection
Functional Features
- The PCA9674D,518 provides a bidirectional I/O port that can be independently configured as input or output.
- It supports both open-drain and push-pull output configurations.
- This IC features internal pull-up resistors for each I/O pin.
- It offers individual software programmable I/O pin polarity inversion.
Advantages and Disadvantages
Advantages
- Simple and efficient solution for expanding I/O ports in microcontroller-based systems.
- Compatible with a wide range of supply voltages.
- Low standby current consumption, suitable for battery-powered devices.
- Supports various I/O configurations and polarity inversion.
Disadvantages
- Limited number of I/O ports (8-bit) compared to other expansion solutions.
- Requires an I2C-bus interface, which may add complexity to the system design.
Working Principles
The PCA9674D,518 operates by communicating with a microcontroller or host device through the I2C-bus interface. The microcontroller sends commands and data to the PCA9674D,518, configuring its I/O pins as either inputs or outputs. The state of each I/O pin can be read or set by the microcontroller. The PCA9674D,518 then responds accordingly, allowing for the expansion of I/O ports in the system.
Detailed Application Field Plans
The PCA9674D,518 finds applications in various fields, including but not limited to: - Industrial automation - Home automation - Internet of Things (IoT) devices - Robotics - Automotive electronics - Consumer electronics
Its ability to provide additional I/O ports makes it suitable for any application that requires interfacing with multiple external devices or sensors.
Detailed and Complete Alternative Models
Some alternative models to PCA9674D,518 that offer similar functionality include: - MCP23017 - PCF8574 - MAX7313 - SX1509 - TCA9539
These alternative models can be considered based on specific requirements and compatibility with the target system.
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قم بإدراج 10 أسئلة وإجابات شائعة تتعلق بتطبيق PCA9674D,518 في الحلول التقنية
Sure! Here are 10 common questions and answers related to the application of PCA9674D,518 in technical solutions:
Q: What is PCA9674D,518? A: PCA9674D,518 is a 16-bit I/O expander with an I2C interface, which allows for easy expansion of digital inputs and outputs in various applications.
Q: What is the maximum voltage that PCA9674D,518 can handle? A: PCA9674D,518 can handle a maximum voltage of 5.5V.
Q: How many I/O pins does PCA9674D,518 have? A: PCA9674D,518 has 16 I/O pins, which can be configured as either inputs or outputs.
Q: Can PCA9674D,518 be used with both 3.3V and 5V microcontrollers? A: Yes, PCA9674D,518 is compatible with both 3.3V and 5V microcontrollers, thanks to its wide supply voltage range.
Q: What is the maximum current that each I/O pin of PCA9674D,518 can sink/source? A: Each I/O pin of PCA9674D,518 can sink/source a maximum current of 25mA.
Q: Can PCA9674D,518 be cascaded with other I/O expanders? A: Yes, PCA9674D,518 can be cascaded with other I/O expanders using the I2C bus, allowing for even more I/O pins to be added to the system.
Q: Does PCA9674D,518 have built-in pull-up resistors? A: Yes, PCA9674D,518 has built-in programmable pull-up resistors, which can be enabled or disabled for each I/O pin individually.
Q: Can PCA9674D,518 generate interrupts? A: Yes, PCA9674D,518 has interrupt functionality, allowing it to generate an interrupt signal to the microcontroller when a specific event occurs on any of its I/O pins.
Q: What is the maximum frequency at which PCA9674D,518 can operate? A: PCA9674D,518 can operate at a maximum frequency of 400kHz.
Q: Are there any evaluation boards or development kits available for PCA9674D,518? A: Yes, NXP provides evaluation boards and development kits for PCA9674D,518, which can help in the prototyping and testing of applications using this I/O expander.
Please note that these answers are general and may vary depending on the specific implementation and requirements of your technical solution.