LT3960 High-Speed Transceiver

ADI's LT3960 is a robust high-speed transceiver that extends a single-master I²C bus through harsh or noisy environments at up to 400 kbps using the CAN-physical layer. One LT3960 sits near the I²C master, creating from SCL and SDA equivalent differential buses (I²CAN) on two twisted pairs. At the other end of the twisted pairs, a second LT3960 recreates the I²C bus locally for any slave I²C devices. A built-in 3.3 V LDO powers both the I²C and I²CAN buses from a single input supply from 4 V to 60 V. Alternatively, the LT3960 can be powered directly from a 3.3 V or 5 V supply.

Features

• I²CAN transceiver for transmitting I2C over two twisted pairs: Differential communication is significantly more robust in harsh environments
• Operation from 4 V to 60 V power supply range with internal 3.3 V regulator: Ability to be powered directly from high voltage rails shared by neighboring devices (e.g., LED drivers); eliminates the need for additional buck regulator
• Wide common mode range of ±36 V: Extends functionality in environments with high common mode voltages due to electrical noise or local ground potential differences due to ground loop

Applications

• Automotive: A²B, road noise cancellation, LED driver communication, and matrix LED managers
• Industrial automation
• General purpose