PCA9544APW,112
Product Overview
Category
The PCA9544APW,112 belongs to the category of I2C bus switches and multiplexers.
Use
It is used for enabling a system to connect and communicate with multiple I2C buses or devices.
Characteristics
- Allows multiple I2C masters to control the same I2C bus
- Low Rds(on) switches
- Operating voltage range: 1.65V to 5.5V
- Low standby current
- Compatible with both 3.3V and 5V systems
Package
The PCA9544APW,112 comes in a TSSOP-14 package.
Essence
The essence of this product lies in its ability to facilitate communication between multiple I2C devices within a system.
Packaging/Quantity
It is typically available in reels with a quantity of 2500 units per reel.
Specifications
- Number of Channels: 4
- Supply Voltage - Max: 5.5V
- Supply Voltage - Min: 1.65V
- Maximum Operating Temperature: 85°C
- Minimum Operating Temperature: -40°C
Detailed Pin Configuration
The detailed pin configuration of PCA9544APW,112 can be found in the manufacturer's datasheet.
Functional Features
- Enables communication between multiple I2C buses and devices
- Low on-resistance switches minimize distortion and power consumption
- Supports hot insertion
Advantages and Disadvantages
Advantages
- Simplifies I2C bus management in complex systems
- Low power consumption
- Wide operating voltage range
Disadvantages
- Limited to 4 channels
- May require additional components for larger-scale applications
Working Principles
The PCA9544APW,112 works by selectively connecting one of the four channels to the common I2C bus, allowing communication with the desired I2C device.
Detailed Application Field Plans
This product is commonly used in applications where multiple I2C devices need to be controlled by a single microcontroller or processor. It finds applications in industrial automation, consumer electronics, automotive systems, and more.
Detailed and Complete Alternative Models
Some alternative models to PCA9544APW,112 include PCA9543A, TCA9544A, and TCA9548A. These devices offer similar functionality with variations in the number of channels and other features.
In conclusion, the PCA9544APW,112 is a versatile I2C bus switch that simplifies the management of multiple I2C devices within a system. Its low power consumption, wide operating voltage range, and compatibility with both 3.3V and 5V systems make it a popular choice for various applications.
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10个与PCA9544APW,112在技术解决方案中的应用相关的常见问题及解答
What is PCA9544APW,112?
- PCA9544APW,112 is a 4-channel I2C-bus multiplexer with interrupt logic and an active-low reset input.
How does PCA9544APW,112 work?
- PCA9544APW,112 allows multiple I2C devices to be connected to the same I2C bus, and it can switch the bus to one of its four channels at a time.
What is the maximum frequency supported by PCA9544APW,112?
- The maximum frequency supported by PCA9544APW,112 is 400 kHz.
What are the typical applications of PCA9544APW,112?
- PCA9544APW,112 is commonly used in applications where multiple I2C devices need to be connected to a microcontroller or other master device with limited I2C bus connections.
How do I control the channel selection on PCA9544APW,112?
- Channel selection on PCA9544APW,112 can be controlled through the I2C interface by sending the appropriate commands to the device.
Can PCA9544APW,112 handle level shifting for different voltage domains?
- No, PCA9544APW,112 does not provide level shifting capabilities and should be used with devices operating at the same voltage level.
Does PCA9544APW,112 have any built-in protection features?
- PCA9544APW,112 has built-in overvoltage and ESD protection on the I2C-bus and its supply voltage pins.
What is the power supply range for PCA9544APW,112?
- PCA9544APW,112 operates within a power supply range of 2.3 V to 5.5 V.
Is PCA9544APW,112 suitable for automotive applications?
- Yes, PCA9544APW,112 is suitable for automotive applications as it meets the AEC-Q100 standard.
Are there any evaluation boards or reference designs available for PCA9544APW,112?
- Yes, NXP provides evaluation boards and reference designs for PCA9544APW,112 to help with its integration into technical solutions.