Infineon TLE9250SJ: High-Speed CAN Transceiver for Automotive Network Interfaces
The evolution of automotive electronics towards greater connectivity, automation, and electrification demands robust and reliable communication backbones. At the heart of most in-vehicle networks (IVNs) lies the Controller Area Network (CAN), a proven standard for real-time data exchange between electronic control units (ECUs). The Infineon TLE9250SJ stands out as a premier high-speed CAN transceiver, engineered to meet the stringent requirements of modern automotive applications.
This integrated circuit serves as the critical physical interface between a microcontroller's CAN protocol controller and the physical two-wire CAN bus. It is designed for high-speed CAN networks operating at data rates up to 2 Mbit/s, supporting the increasing data throughput required by advanced driver-assistance systems (ADAS), powertrain modules, and body control units. A key feature of the TLE9250SJ is its robust ESD protection, exceeding 8 kV according to the Human Body Model (HBM), which safeguards the device and the connected microcontroller from electrostatic discharge events common in automotive manufacturing and service environments.
Furthermore, the device boasts excellent electromagnetic compatibility (EMC) performance and very low electromagnetic emission (EME), minimizing its interference with other sensitive electronics in the vehicle. This is complemented by high electromagnetic immunity (EMI), ensuring reliable operation even in the electrically noisy environment of an automobile.
Compliance with the ISO 11898-2:2016 and SAE J2284 standards guarantees interoperability with other CAN transceivers in the market. The TLE9250SJ also includes advanced failure mode management and diagnosis capabilities. Its built-in power management features, including a dedicated low-power mode with local and remote wake-up functionality, are essential for supporting partial networking. This allows certain ECUs to enter a sleep state when not needed, significantly reducing the vehicle's quiescent current and overall power consumption—a critical factor for electric and hybrid vehicles.
Housed in a compact, surface-mountable SOIC-8 package, the TLE9250SJ is designed for automated assembly and offers high reliability for operation across the demanding automotive temperature range (-40°C to 150°C junction temperature). Its combination of performance, protection, and power efficiency makes it an ideal solution for building next-generation automotive network interfaces.
The Infineon TLE9250SJ is a highly integrated and robust high-speed CAN transceiver that provides the essential link for reliable data communication in vehicles. Its standout features include superior ESD protection, excellent EMC performance, full compliance with automotive standards, and advanced low-power management, making it a top-tier choice for designers of automotive electronic systems.
Keywords: High-Speed CAN Transceiver, Automotive ESD Protection, ISO 11898-2, Low-Power Mode, Electromagnetic Compatibility (EMC)
