Introducing the ISO7021FD Isolated CAN Transceiver

The ISO7021FD from Texas Instruments is a high-performance, isolated CAN (Controller Area Network) transceiver that serves as a critical interface between the CAN protocol controller and the physical two-wire CAN bus. Designed with robustness and reliability in mind, this transceiver is ideal for industrial and automotive applications where isolation is necessary to protect against noise, ground loop errors, and harmful voltage differences.

Key Features of ISO7021FD

• Signal Isolation: The ISO7021FD provides galvanic isolation of 5000 VRMS for 1 minute per UL 1577. This feature ensures that the data and devices on either side of the transceiver are protected from high voltage spikes and surges.
• High-Speed Data Transfer: With a data rate up to 1 Mbps, it is well-suited for the high-speed communication requirements of modern industrial systems.
• Robustness: The device is designed to handle common-mode voltages up to ±25 V, making it robust against electrical disturbances and improving system reliability.
• Low Power Consumption: The ISO7021FD operates with a low quiescent current, which is critical for power-sensitive applications.
• Extended Temperature Range: It functions reliably over an industrial temperature range of -40°C to +125°C, ensuring performance in harsh environments.

Applications

The ISO7021FD is versatile and can be used in various applications, including:

• Industrial automation and control systems
• Motor drives and inverters
• Automotive networks
• Medical equipment
• Energy generation and distribution systems

Reliability and Safety

With its built-in safety features, the ISO7021FD helps to create a safer and more reliable network by providing necessary isolation. Its fail-safe design ensures that the device defaults to a known state in the event of power loss. Additionally, the transceiver is AEC-Q100 qualified for automotive applications, demonstrating its compliance with stringent industry standards.

Overall, the ISO7021FD from Texas Instruments is a robust, high-performance isolated CAN transceiver that offers the features and protections needed for critical communication in industrial and automotive environments.