TJA1021T/20/C,118

Product Overview

Category

The TJA1021T/20/C,118 belongs to the category of automotive transceivers.

Use

This product is primarily used in automotive applications for communication between electronic control units (ECUs) within a vehicle.

Characteristics

• High-speed communication: The TJA1021T/20/C,118 supports high-speed data transmission, enabling efficient communication between ECUs.
• Robustness: It is designed to withstand harsh automotive environments, including temperature variations, electromagnetic interference, and voltage fluctuations.
• Low power consumption: The transceiver operates with low power consumption, contributing to energy efficiency in automotive systems.

Package

The TJA1021T/20/C,118 is available in a compact package, suitable for integration into automotive electronic systems.

Essence

The essence of the TJA1021T/20/C,118 lies in its ability to facilitate reliable and efficient communication between various ECUs in an automotive environment.

Packaging/Quantity

The product is typically packaged in reels or tubes, depending on the manufacturer's specifications. The quantity per package may vary, but it is commonly available in bulk quantities for industrial use.

Specifications

• Supply voltage range: 4.5V to 5.5V
• Operating temperature range: -40°C to +125°C
• Data rate: Up to 1 Mbps
• Transceiver type: CAN (Controller Area Network)
• Pin count: 8
• ESD protection: ±8 kV HBM (Human Body Model)

Detailed Pin Configuration

The TJA1021T/20/C,118 features the following pin configuration:

1. VCC: Power supply input
2. GND: Ground connection
3. TXD: Transmit data line
4. RXD: Receive data line
5. VREF: Reference voltage for the CAN bus
6. CANH: High-level CAN bus line
7. CANL: Low-level CAN bus line
8. STB: Standby mode control input

Functional Features

• Bus wake-up capability: The transceiver can detect activity on the CAN bus and wake up the connected ECUs from sleep mode.
• Error detection and reporting: It provides error detection mechanisms, such as frame check sequence (FCS) and error frames, to ensure data integrity.
• Fault-tolerant communication: The TJA1021T/20/C,118 supports fault-tolerant communication, allowing for reliable data transmission even in the presence of errors or faults.

Advantages and Disadvantages

Advantages

• High-speed communication enables efficient data transfer between ECUs.
• Robust design ensures reliability in harsh automotive environments.
• Low power consumption contributes to energy efficiency.
• Fault-tolerant communication enhances system reliability.

Disadvantages

• Limited pin count may restrict the number of ECUs that can be connected directly.

Working Principles

The TJA1021T/20/C,118 operates based on the principles of the Controller Area Network (CAN) protocol. It uses differential signaling on the CAN bus lines (CANH and CANL) to transmit and receive data between ECUs. The transceiver interfaces with the microcontroller or other control units to facilitate communication over the CAN bus.

Detailed Application Field Plans

The TJA1021T/20/C,118 finds extensive application in various automotive systems, including:

1. Engine control units (ECUs)
2. Transmission control units
3. Body control modules
4. Anti-lock braking systems (ABS)
5. Airbag control units
6. Instrument clusters
7. Powertrain control modules
8. Electronic stability control systems

Detailed and Complete Alternative Models

1. TJA1040: Similar automotive transceiver with extended temperature range.
2. MCP2551: CAN transceiver with integrated voltage regulator.
3. SN65HVD230: High-speed CAN transceiver with low power consumption.

These alternative models offer similar functionality and can be considered as substitutes for the TJA1021T/20/C,118 in automotive applications.

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