PCA9617ADMR2G

Product Overview

Category: Integrated Circuit (IC)

Use: The PCA9617ADMR2G is a differential I2C bus buffer that extends the range of the I2C bus by buffering both the data (SDA) and clock (SCL) lines. It allows for long-distance communication between I2C devices, making it ideal for applications where the distance between devices exceeds the typical I2C limitations.

Characteristics: - Extends I2C bus range - Supports bidirectional data transfer - Low power consumption - Small form factor - Easy to integrate into existing designs

Package: The PCA9617ADMR2G is available in a small 8-pin SOIC package, which is suitable for surface mount applications.

Essence: The essence of the PCA9617ADMR2G lies in its ability to extend the range of the I2C bus, enabling reliable communication over longer distances.

Packaging/Quantity: The PCA9617ADMR2G is typically sold in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Supply Voltage: 2.3V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Maximum Data Rate: 400 kbps
• Maximum Bus Length: Up to 30 meters
• Input/Output Capacitance: 10 pF
• Rise/Fall Time: 20 ns

Detailed Pin Configuration

The PCA9617ADMR2G has the following pin configuration:

1. VDD: Power supply voltage input
2. GND: Ground reference
3. SDA_IN: Input data line for the I2C bus
4. SDA_OUT: Output data line for the I2C bus
5. SCL_IN: Input clock line for the I2C bus
6. SCL_OUT: Output clock line for the I2C bus
7. EN: Enable pin to control the buffer operation
8. NC: No connection

Functional Features

• Bidirectional buffering of I2C bus signals
• Automatic direction sensing and switching
• Supports multiple PCA9617ADMR2G devices in a daisy-chain configuration
• Low standby current consumption
• Robust ESD protection

Advantages and Disadvantages

Advantages: - Extends the range of the I2C bus, allowing communication over longer distances - Easy to integrate into existing designs - Supports bidirectional data transfer - Low power consumption

Disadvantages: - Limited maximum data rate compared to other high-speed communication protocols - Requires additional components for long-distance communication

Working Principles

The PCA9617ADMR2G works by buffering the I2C bus signals, both the data (SDA) and clock (SCL) lines. It uses automatic direction sensing and switching to ensure bidirectional communication between I2C devices. The buffer amplifies the signals, allowing them to travel over longer distances without degradation.

Detailed Application Field Plans

The PCA9617ADMR2G is commonly used in applications where the distance between I2C devices exceeds the typical limitations. Some examples of its application field plans include:

1. Industrial Control Systems: Used to connect sensors and actuators located far apart in industrial automation systems.
2. Automotive Electronics: Enables communication between various electronic modules distributed throughout a vehicle.
3. Telecommunications: Facilitates communication between network equipment located in different parts of a telecommunications infrastructure.
4. Smart Grids: Allows for long-distance communication between smart meters and grid management systems.

Detailed and Complete Alternative Models

1. PCA9600: Similar to the PCA9617ADMR2G, but with a lower maximum data rate of 100 kbps.
2. PCA9605: Offers bidirectional buffering and supports higher data rates up to 1 Mbps.
3. PCA9619: Provides bidirectional buffering and supports hot-swapping of I2C devices.

These alternative models offer similar functionality to the PCA9617ADMR2G but may have different specifications or package options.

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