PCA9517DGKR
I2C bus repeaters with voltage level translation in compact MSOP packages
Manufacturer： ti
series introduction
# PCA9517DGKR Product Series Introduction
## 1. Overview
The PCA9517DGKR is a highly versatile and reliable product series within the realm of integrated circuits. It belongs to the category of I²C (Inter - Integrated Circuit) bus buffers and level translators, which play a crucial role in modern electronic systems. These devices are designed to enhance the performance and functionality of I²C communication interfaces, enabling seamless data transfer between different components in a system.
## 2. Key Features
### 2.1 Bidirectional Level Translation
One of the most significant features of the PCA9517DGKR is its ability to perform bidirectional level translation. In many electronic systems, different components may operate at different voltage levels. For example, a microcontroller might operate at 3.3V, while a sensor could be designed to work at 5V. The PCA9517DGKR can translate the I²C signals between these different voltage levels, allowing these components to communicate effectively without any compatibility issues. This feature simplifies the design process and enables the integration of a wider range of components in a single system.
### 2.2 Low - Power Operation
Power consumption is a critical factor in modern electronic devices, especially in battery - powered applications. The PCA9517DGKR is designed with low - power operation in mind. It has a very low quiescent current, which means that it consumes minimal power when not actively transmitting or receiving data. This makes it an ideal choice for applications where power efficiency is a top priority, such as portable devices, wearables, and IoT (Internet of Things) sensors.
### 2.3 High - Speed Data Transfer
The PCA9517DGKR supports high - speed I²C communication. It can handle data transfer rates of up to 400 kbps (Fast - mode) and even up to 1 Mbps (Fast - mode Plus) in some cases. This high - speed capability allows for quick and efficient data exchange between components, reducing the overall system latency and improving the responsiveness of the system. It is particularly useful in applications where real - time data processing is required, such as industrial automation and automotive electronics.
### 2.4 Multiple Channel Support
This product series typically offers multiple channels for I²C communication. For example, some variants may have two independent I²C channels. This allows for the simultaneous connection of multiple I²C devices, increasing the system's flexibility and expandability. It enables designers to build more complex systems with multiple sensors, actuators, and other I²C - compatible components without the need for additional level - shifting or buffering devices.
### 2.5 ESD Protection
Electrostatic discharge (ESD) is a common threat in electronic systems that can cause permanent damage to components. The PCA9517DGKR is equipped with built - in ESD protection on its I²C pins. This protection helps to safeguard the device and the connected components from ESD events, ensuring the reliability and longevity of the system. It can withstand ESD voltages of up to a certain level (e.g., ±8 kV contact discharge and ±15 kV air discharge), providing an extra layer of security in harsh operating environments.
## 3. Applications
### 3.1 Consumer Electronics
In consumer electronics, the PCA9517DGKR is widely used in devices such as smartphones, tablets, and smartwatches. These devices often integrate multiple sensors (e.g., accelerometers, gyroscopes, and ambient light sensors) that communicate with the main processor via the I²C bus. The level - translation and buffering capabilities of the PCA9517DGKR ensure seamless communication between these sensors and the processor, even if they operate at different voltage levels.
### 3.
Images for reference
8-TSSOP 8-MSOP
8-MSOP
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