TJA1051 is a high-speed CAN transceiver that serves as an interface between the CAN controller and the physical bus, providing differential transmission and reception capabilities.
The TJA1051 is a high‑speed CAN transceiver that interfaces between a CAN controller and the physical bus, designed for automotive applications with a transmission rate up to 1 Mbit/s. It operates on 12 V or 24 V systems and offers low‑power mode where the device becomes invisible on the bus when powered down.
Key features include full compliance with ISO 11898‑2, low electromagnetic emission, I/O pins compatible with 3 V‑5 V microcontrollers, and robust protection against ESD, over‑voltage, and over‑temperature. The device is available in compact SO8 or HVSON8 packages with detailed pin descriptions and a block diagram illustrating its internal architecture. This manual is written in Chinese.
| Maximum data rate | 1 Mbit/s |
|---|---|
| Operating voltage systems | 12 V and 24 V |
| I/O voltage range | 3 V ~ 5 V |
| ESD protection (CANL/CANH) | ±8 kV (IEC 61000‑4‑2) |
| Package types | SO8 or HVSON8 |
The TJA1051 supports a maximum CAN bus speed of 1 Mbit/s.
It is suitable for both 12 V and 24 V automotive systems.
The CANL and CANH pins are protected up to ±8 kV (IEC 61000‑4‑2), other pins up to ±4 kV, and the device includes additional mechanical and over‑temperature protection.