MC33978EKR2

Product Overview

Category: Integrated Circuit (IC)

Use: The MC33978EKR2 is a versatile integrated circuit designed for automotive applications. It serves as a high-speed CAN (Controller Area Network) transceiver and a Local Interconnect Network (LIN) physical interface.

Characteristics: - High-speed CAN transceiver - LIN physical interface - Automotive-grade reliability - Compact package size - Low power consumption

Package: The MC33978EKR2 is available in a small outline package (SOP) with 32 pins.

Essence: This IC acts as a bridge between the CAN bus and LIN bus, enabling communication between different automotive systems. It provides reliable and efficient data transmission in automotive networks.

Packaging/Quantity: The MC33978EKR2 is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Supply Voltage Range: 5V to 27V
• Operating Temperature Range: -40°C to +125°C
• Maximum Data Rate: 1 Mbps (CAN), 20 kbps (LIN)
• ESD Protection: ±8 kV (HBM), ±15 kV (IEC61000-4-2 Air Gap Discharge)

Pin Configuration

The MC33978EKR2 has a total of 32 pins. Here is the detailed pin configuration:

| Pin Number | Pin Name | Function | |------------|----------|----------| | 1 | VBAT | Battery voltage supply input | | 2 | VDD | Digital supply voltage input | | 3 | GND | Ground | | 4 | TXD | CAN Transmit Data | | 5 | RXD | CAN Receive Data | | 6 | WAKE | Wake-up input | | 7 | LIN1 | LIN Bus 1 | | 8 | LIN2 | LIN Bus 2 | | ... | ... | ... | | 32 | VBAT | Battery voltage supply input |

Functional Features

• High-speed CAN transceiver with integrated bus termination
• LIN physical interface supporting LIN 2.x and SAE J2602 protocols
• Sleep mode for low power consumption during idle periods
• Fail-safe features to ensure reliable communication in automotive environments
• Overvoltage and undervoltage protection
• Thermal shutdown protection

Advantages and Disadvantages

Advantages: - Versatile IC for both CAN and LIN communication - Compact package size allows for space-saving designs - Automotive-grade reliability ensures durability in harsh conditions - Low power consumption for energy-efficient operation - Integrated bus termination simplifies circuit design

Disadvantages: - Limited maximum data rate compared to some other high-speed transceivers - May require additional external components for certain applications

Working Principles

The MC33978EKR2 operates by receiving and transmitting data between the CAN and LIN buses. It incorporates a high-speed CAN transceiver that handles the communication on the CAN bus, while also providing a physical interface for the LIN bus. The IC includes various protection mechanisms to ensure reliable operation in automotive environments, such as overvoltage and undervoltage protection, as well as thermal shutdown.

Application Field Plans

The MC33978EKR2 is widely used in automotive applications where both CAN and LIN communication are required. Some common application areas include:

1. Body Control Modules (BCMs)
2. Door modules
3. Climate control systems
4. Instrument clusters
5. Lighting systems
6. Powertrain control modules

Alternative Models

Here are some alternative models that offer similar functionality to the MC33978EKR2:

1. TJA1043: High-speed CAN transceiver with integrated LIN physical interface.
2. MCP2025: LIN transceiver with integrated voltage regulator and protection features.
3. SN65HVD230: High-speed CAN transceiver with low-power sleep mode.

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

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