STMicroelectronics L9963T-TR, Battery Backup IC, 3.3 V to 5V Input 1.4V Output 18 mA, SO-16N 64-Pin

The STMicroelectronics L9963T series is a general purpose SPI to isolated SPI transceiver intended to create a communication bridge between devices located into different voltage domains. It is able to transfer communication data incoming from a classical 4-wire based SPI Interface to a 2-wire isolated Interface (and viceversa).

• AEC-Q100 qualified
• Full ISO26262 compliant, ASIL-D systems ready
• Compatible with both 3.3 V and 5 V logics
• Supports both XFMR and Capacitive isolation