PCA82C251/N3,112

Product Overview

• Category: Integrated Circuit
• Use: Communication and Networking
• Characteristics: High-speed CAN Transceiver
• Package: SOIC-8
• Essence: Reliable and efficient communication between microcontrollers in automotive applications
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: 4.5V to 5.5V
• Operating Temperature Range: -40°C to +125°C
• Data Rate: Up to 1 Mbps
• Transmitting Distance: Up to 500 meters
• Protection Features: Thermal Shutdown, Short-Circuit Protection, Undervoltage Detection

Pin Configuration

The PCA82C251/N3,112 has a total of 8 pins arranged as follows:

┌───┬───┐ │ 1 │ 2 │ ├───┼───┤ │ 3 │ 4 │ ├───┼───┤ │ 5 │ 6 │ ├───┼───┤ │ 7 │ 8 │ └───┴───┘

1. VCC: Supply Voltage
2. TXD: Transmit Data
3. GND: Ground
4. RXD: Receive Data
5. WAKE: Wake-Up Input
6. VREF: Reference Voltage Output
7. CANH: CAN Bus Positive Line
8. CANL: CAN Bus Negative Line

Functional Features

• High-speed data transmission up to 1 Mbps
• Compliant with ISO 11898-2 standard for high-speed CAN
• Supports bus lengths up to 500 meters
• Integrated protection features for enhanced reliability
• Wake-up input for low-power operation
• Reference voltage output for external circuitry

Advantages and Disadvantages

Advantages

• Reliable communication in automotive applications
• High-speed data transmission
• Integrated protection features ensure system safety
• Low-power operation with wake-up input
• Compact SOIC-8 package for space-constrained designs

Disadvantages

• Limited to automotive applications
• Requires additional external components for complete CAN network implementation

Working Principles

The PCA82C251/N3,112 is a high-speed CAN transceiver designed for reliable communication between microcontrollers in automotive applications. It operates based on the Controller Area Network (CAN) protocol, which allows multiple nodes to communicate over a shared bus.

The transceiver converts the digital signals from the microcontroller into differential signals suitable for transmission over the CAN bus. It also receives differential signals from the bus and converts them back into digital signals for the microcontroller.

The integrated protection features, such as thermal shutdown and short-circuit protection, ensure the safe operation of the transceiver and protect it from potential damage.

Application Field Plans

The PCA82C251/N3,112 is primarily used in automotive applications where reliable communication between microcontrollers is crucial. Some specific application areas include:

1. Automotive Control Systems: Used in engine control units, transmission control units, and other electronic control modules.
2. Body Electronics: Enables communication between various electronic systems in the vehicle, such as lighting, climate control, and door modules.
3. Infotainment Systems: Facilitates communication between audio systems, displays, and other multimedia devices in the vehicle.
4. Safety Systems: Supports communication between airbag control units, anti-lock braking systems, and other safety-related modules.

Alternative Models

• SN65HVD230D
• MCP2551
• TJA1050
• MAX3051

These alternative models offer similar functionality and can be used as replacements for the PCA82C251/N3,112 in compatible applications.

In conclusion, the PCA82C251/N3,112 is a high-speed CAN transceiver designed for reliable communication between microcontrollers in automotive applications. With its compact package, integrated protection features, and compliance with industry standards, it provides an efficient solution for establishing robust communication networks in vehicles.