PCA82C251T/N,112

Product Overview

• Category: Integrated Circuit (IC)
• Use: Communication and networking
• Characteristics: High-speed CAN transceiver
• Package: Surface Mount Technology (SMT)
• Essence: Facilitates reliable communication in automotive applications
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Supply Voltage: 4.5V to 5.5V
• Data Rate: Up to 1 Mbps
• Operating Temperature Range: -40°C to +125°C
• Number of Pins: 8
• Pin Configuration: See detailed pin configuration below

Detailed Pin Configuration

1. VCC: Power supply voltage
2. GND: Ground reference
3. TXD: Transmit data output
4. RXD: Receive data input
5. VREF: Reference voltage for bus level
6. CANH: CAN high-level input/output
7. CANL: CAN low-level input/output
8. SPLIT: Split termination resistor control

Functional Features

• High-speed transmission: Supports data rates up to 1 Mbps
• Robust communication: Implements the Controller Area Network (CAN) protocol for reliable data transfer
• Low power consumption: Operates with a supply voltage as low as 4.5V
• ESD protection: Provides Electrostatic Discharge (ESD) protection on all pins
• Fault-tolerant design: Ensures error-free communication even in noisy environments

Advantages and Disadvantages

Advantages

• Wide operating temperature range (-40°C to +125°C)
• Small form factor and surface mount package for space-constrained applications
• High immunity to electromagnetic interference (EMI)
• Supports split termination for improved signal integrity
• Compliant with ISO 11898-2 standard

Disadvantages

• Limited number of pins may restrict functionality in complex systems
• Requires external components for proper operation (termination resistors, capacitors)

Working Principles

The PCA82C251T/N,112 is a high-speed CAN transceiver designed to facilitate communication between microcontrollers and other devices 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 voltage levels 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 to process.

The device incorporates various protection mechanisms to ensure reliable communication, including ESD protection on all pins and high immunity to electromagnetic interference (EMI). It supports split termination, which helps improve signal integrity by reducing reflections on the bus.

Detailed Application Field Plans

The PCA82C251T/N,112 is primarily used in automotive applications that require robust and high-speed communication. Some specific application areas include:

1. Automotive control systems: Enables communication between various control units in vehicles, such as engine management systems, transmission control modules, and body control modules.
2. Infotainment systems: Facilitates data exchange between different infotainment components, including audio systems, displays, and navigation modules.
3. Advanced driver-assistance systems (ADAS): Supports communication between sensors, actuators, and central processing units in ADAS applications, such as collision avoidance and lane departure warning systems.
4. Electric vehicle systems: Enables communication between different subsystems in electric vehicles, including battery management systems, motor controllers, and charging infrastructure.

Detailed and Complete Alternative Models

1. MCP2551: Similar high-speed CAN transceiver with comparable specifications and features.
2. TJA1050: Another popular CAN transceiver offering similar functionality.
3. SN65HVD230: CAN transceiver with extended temperature range and low power consumption.

These alternative models can be considered based on specific application requirements and availability in the market.

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