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PCA9517DRG4
Product Overview
Category: Integrated Circuit (IC)
Use: Level shifting and translating between different voltage levels in I2C bus applications.
Characteristics: - Bidirectional voltage level translation - Supports I2C Fast Mode Plus (Fm+) with speeds up to 1 MHz - Compatible with both 3.3V and 5V systems - Low standby current consumption - ESD protection for robust operation
Package: SOIC-8
Essence: The PCA9517DRG4 is an IC designed for level shifting and translating signals in I2C bus applications. It allows communication between devices operating at different voltage levels, ensuring compatibility and reliable data transfer.
Packaging/Quantity: The PCA9517DRG4 is typically sold in reels of 250 units.
Specifications
- Supply Voltage Range: 2.3V to 5.5V
- Operating Temperature Range: -40°C to +85°C
- Standby Current: 10µA (typical)
- Maximum Data Rate: 1 MHz
- Number of Channels: 2
Pin Configuration
The PCA9517DRG4 has a total of 8 pins arranged as follows:
___________
| |
1 | 8 | VCC
2 | 7 | SDA1
3 | 6 | SCL1
4 | 5 | GND
|___________|
Functional Features
- Bidirectional voltage level translation between two I2C buses operating at different voltage levels.
- Automatic direction sensing and control.
- Supports I2C Fast Mode Plus (Fm+) with speeds up to 1 MHz.
- Provides ESD protection for robust operation in harsh environments.
- Compatible with both 3.3V and 5V systems, allowing seamless integration into various applications.
Advantages and Disadvantages
Advantages: - Enables communication between devices operating at different voltage levels. - Supports high-speed data transfer up to 1 MHz. - Low standby current consumption helps conserve power. - Provides ESD protection for enhanced reliability.
Disadvantages: - Limited to level shifting and translating within the I2C bus protocol. - Not suitable for applications requiring voltage translation for other communication protocols.
Working Principles
The PCA9517DRG4 utilizes a bidirectional voltage level translator to enable communication between two I2C buses operating at different voltage levels. It automatically senses the direction of data flow and adjusts the voltage levels accordingly. The device ensures compatibility by translating logic high and low levels from one voltage domain to another, allowing seamless data transfer between devices.
Detailed Application Field Plans
The PCA9517DRG4 is commonly used in various applications where level shifting and translating are required in I2C bus communication. Some typical application fields include:
- Embedded Systems: Used in microcontroller-based systems to interface devices operating at different voltage levels.
- Industrial Automation: Enables communication between sensors, actuators, and control units with varying voltage requirements.
- Consumer Electronics: Facilitates interoperability between devices such as smartphones, tablets, and peripherals.
- Automotive Electronics: Allows communication between different subsystems and modules within a vehicle's electronic system.
Detailed and Complete Alternative Models
- PCA9306: Similar functionality with a smaller package (SOT23-8).
- TXB0108: Provides bidirectional level shifting for multiple channels (8 channels) and supports various communication protocols.
- BSS138: MOSFET-based level shifter suitable for low-voltage applications.
These alternative models offer similar functionality to the PCA9517DRG4 and can be considered based on specific application requirements.
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Listen Sie 10 häufige Fragen und Antworten im Zusammenhang mit der Anwendung von PCA9517DRG4 in technischen Lösungen auf
Sure! Here are 10 common questions and answers related to the application of PCA9517DRG4 in technical solutions:
Q: What is PCA9517DRG4? A: PCA9517DRG4 is a level-translating I2C-bus repeater that provides bidirectional voltage-level translation between low-voltage (down to 0.9V) and higher-voltage (up to 5.5V) I2C-bus or SMBus applications.
Q: What is the purpose of using PCA9517DRG4 in a technical solution? A: PCA9517DRG4 allows for communication between devices operating at different voltage levels, enabling seamless integration of components with varying voltage requirements in an I2C-bus or SMBus system.
Q: How many channels does PCA9517DRG4 have? A: PCA9517DRG4 has two bidirectional channels, allowing for voltage-level translation between two different voltage domains.
Q: What is the maximum data rate supported by PCA9517DRG4? A: PCA9517DRG4 supports a maximum data rate of 400 kHz, making it suitable for high-speed I2C-bus or SMBus applications.
Q: Can PCA9517DRG4 be used as a standalone device? A: Yes, PCA9517DRG4 can be used as a standalone device without requiring any external components for basic voltage-level translation functionality.
Q: Does PCA9517DRG4 require external power supply? A: Yes, PCA9517DRG4 requires an external power supply connected to its VCC pin to operate.
Q: Can PCA9517DRG4 handle level shifting between multiple voltage domains? A: Yes, PCA9517DRG4 can handle level shifting between multiple voltage domains, allowing for seamless communication between devices operating at different voltage levels.
Q: What is the input voltage range supported by PCA9517DRG4? A: PCA9517DRG4 supports an input voltage range of 0.9V to 5.5V, making it compatible with a wide range of I2C-bus or SMBus applications.
Q: Can PCA9517DRG4 be used in both 3.3V and 5V systems? A: Yes, PCA9517DRG4 can be used in both 3.3V and 5V systems, as it supports bidirectional voltage-level translation between these voltage domains.
Q: Are there any special considerations when using PCA9517DRG4 in a technical solution? A: It is important to ensure proper decoupling capacitors are used near the VCC and GND pins of PCA9517DRG4 to minimize noise and ensure stable operation. Additionally, the device should be properly configured according to the desired voltage-level translation requirements.