TJA1021T/10/C,118

Product Overview

Category

The TJA1021T/10/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's network.

Characteristics

• High-speed data transmission: The TJA1021T/10/C,118 supports high-speed communication up to 1 Mbps.
• Robustness: It is designed to withstand harsh automotive environments, including temperature variations, electromagnetic interference, and voltage fluctuations.
• Low power consumption: The transceiver operates efficiently, minimizing power consumption and extending battery life in vehicles.
• Compatibility: It complies with the Controller Area Network (CAN) protocol, making it compatible with existing automotive networks.

Package

The TJA1021T/10/C,118 is available in a compact package, ensuring easy integration into automotive electronic systems.

Essence

The essence of this product lies in its ability to facilitate reliable and efficient communication between various ECUs in a vehicle, enabling seamless operation and control.

Packaging/Quantity

The transceiver is typically packaged in reels or tubes, with varying quantities depending on the manufacturer's specifications.

Specifications

• Supply voltage range: 4.5V to 5.5V
• Operating temperature range: -40°C to +125°C
• Data rate: Up to 1 Mbps
• Standby current: <1 µA
• Transmit dominant timeout: 50 µs
• Receive dominant timeout: 100 µs

Detailed Pin Configuration

The TJA1021T/10/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. CANH: CAN high-level input/output
6. CANL: CAN low-level input/output
7. VIO: IO voltage supply
8. STB: Standby mode control

Functional Features

• Bus driver and receiver: The transceiver provides the necessary functionality to transmit and receive data over the CAN bus.
• Fault-tolerant communication: It supports error detection and fault confinement mechanisms, ensuring reliable data transmission even in the presence of errors.
• Wake-up capability: The TJA1021T/10/C,118 can be configured to wake up from standby mode upon receiving specific wake-up patterns, conserving power when not in use.

Advantages and Disadvantages

Advantages

• High-speed data transmission enables efficient communication between ECUs.
• Robust design ensures reliability in challenging automotive environments.
• Low power consumption contributes to extended battery life.
• Compatibility with the CAN protocol allows for seamless integration into existing networks.

Disadvantages

• Limited compatibility with other communication protocols may require additional components for certain applications.
• Higher cost compared to non-automotive transceivers due to specialized features and ruggedness requirements.

Working Principles

The TJA1021T/10/C,118 operates based on the principles of the Controller Area Network (CAN) protocol. It utilizes differential signaling to transmit and receive data over a two-wire bus (CANH and CANL). The transceiver converts digital signals from the ECUs into differential voltages suitable for transmission and vice versa.

Detailed Application Field Plans

The TJA1021T/10/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. Infotainment systems

Detailed and Complete Alternative Models

1. TJA1040: A lower-speed alternative with a data rate of up to 125 kbps.
2. TJA1050: Offers higher data rates of up to 1 Mbps, similar to the TJA1021T/10/C,118.
3. MCP2551: An alternative from Microchip Technology with similar features and compatibility with the CAN protocol.

These alternative models provide options for different speed requirements and may vary in terms of package size, power consumption, and cost.

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