P82B715P

Product Overview

• Category: Integrated Circuit
• Use: Bus Extender
• Characteristics: High-speed, bidirectional buffer for I2C bus signals
• Package: 8-pin SOIC (Small Outline Integrated Circuit)
• Essence: Extends the range of I2C bus signals and improves signal integrity
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Supply Voltage: 2.3V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Maximum Data Rate: 400 kbps
• Maximum Capacitive Load: 400 pF
• ESD Protection: ±4 kV HBM (Human Body Model)

Detailed Pin Configuration

The P82B715P has a total of 8 pins:

1. SDA_IN: Input pin for Serial Data (SDA) from the I2C bus master.
2. SCL_IN: Input pin for Serial Clock (SCL) from the I2C bus master.
3. GND: Ground reference for the IC.
4. VCC: Positive supply voltage for the IC.
5. SDA_OUT: Output pin for Serial Data (SDA) to the I2C bus slave.
6. SCL_OUT: Output pin for Serial Clock (SCL) to the I2C bus slave.
7. EN: Enable pin to control the operation of the IC.
8. NC: No connection pin.

Functional Features

• Bidirectional Buffer: Allows bi-directional communication between the I2C bus master and slave devices.
• Level Shifting: Provides level shifting capability to extend the range of I2C bus signals.
• Noise Suppression: Improves signal integrity by reducing noise and distortion on the bus lines.
• Hot Swappable: Supports hot swapping of I2C devices without disrupting the bus communication.
• Low Power Consumption: Operates with low power consumption, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages: - Extends the range of I2C bus signals, enabling long-distance communication. - Improves signal integrity by reducing noise and distortion. - Supports hot swapping of I2C devices, allowing easy device replacement. - Low power consumption makes it suitable for portable and battery-powered applications.

Disadvantages: - Limited to a maximum data rate of 400 kbps. - Maximum capacitive load of 400 pF may limit the number of devices on the bus.

Working Principles

The P82B715P acts as a bidirectional buffer for I2C bus signals. It receives the SDA and SCL signals from the I2C bus master and amplifies them to drive the corresponding lines connected to the I2C bus slave devices. The IC also provides level shifting capability, allowing the extension of the I2C bus range. It incorporates noise suppression techniques to improve signal integrity by reducing noise and distortion on the bus lines.

Detailed Application Field Plans

The P82B715P is commonly used in various applications that require long-distance communication using the I2C bus. Some potential application fields include:

1. Industrial Automation: Used in industrial control systems to communicate with sensors, actuators, and other devices over long distances.
2. Automotive Electronics: Enables communication between different electronic modules within a vehicle, such as infotainment systems, climate control units, and engine management systems.
3. Medical Devices: Facilitates communication between medical instruments and monitoring devices, allowing for remote control and data exchange.
4. Home Automation: Integrates various smart home devices, such as lighting systems, thermostats, and security systems, through the I2C bus for centralized control and monitoring.

Detailed and Complete Alternative Models

1. PCA9515A: Similar bidirectional I2C bus buffer with level shifting capability.
2. TCA980x: I2C bus repeater and level shifter for extending the range of I2C signals.
3. LTC4316: Hot-swappable I2C bus buffer with level shifting and noise suppression features.

(Note: The above list is not exhaustive and there are other alternative models available in the market.)

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