TJA1021T/20/CM,118

Product Overview

Category

The TJA1021T/20/CM,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/CM,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/CM,118 is available in a compact package that facilitates easy integration into automotive electronic systems.

Essence

The essence of the TJA1021T/20/CM,118 lies in its ability to provide 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 suitable for large-scale production.

Specifications

• Supply voltage: 5 V
• Operating temperature range: -40°C to +125°C
• Data rate: Up to 1 Mbps
• Interface: SPI (Serial Peripheral Interface)
• ESD protection: ±8 kV HBM (Human Body Model)
• Current consumption: <10 mA (typical)

Detailed Pin Configuration

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

1. VBAT: Battery supply voltage
2. CANH: CAN bus high-side connection
3. CANL: CAN bus low-side connection
4. GND: Ground
5. VCC: Transceiver supply voltage
6. STB: Standby input
7. RXD: Receive data input
8. TXD: Transmit data output
9. WAKE: Wake-up input

Functional Features

• High-speed CAN communication: The transceiver supports the Controller Area Network (CAN) protocol, enabling reliable and fast data transmission between ECUs.
• Bus fault protection: It incorporates features to protect the CAN bus from faults such as short circuits, overvoltage, and undervoltage conditions.
• Sleep mode support: The TJA1021T/20/CM,118 can enter a low-power sleep mode when not actively transmitting or receiving data, contributing to overall system power efficiency.
• Error detection and reporting: It includes error detection mechanisms that allow for the identification and reporting of communication errors within the CAN network.

Advantages and Disadvantages

Advantages

• Robustness in automotive environments
• High-speed data transmission capability
• Low power consumption
• Integrated fault protection mechanisms

Disadvantages

• Limited compatibility with non-automotive applications
• Relatively higher cost compared to generic transceivers

Working Principles

The TJA1021T/20/CM,118 operates based on the principles of the Controller Area Network (CAN) protocol. It facilitates bidirectional communication between ECUs by converting digital signals into differential voltages suitable for transmission over the CAN bus. The transceiver also incorporates error detection and correction mechanisms to ensure reliable data transfer.

Detailed Application Field Plans

The TJA1021T/20/CM,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

Detailed and Complete Alternative Models

1. TJA1028
2. TJA1040
3. MCP2551
4. SN65HVD230
5. PCA82C250

These alternative models offer similar functionality and are commonly used in automotive communication systems.

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