L9965T-TR [STMicroelectronics]

L9965T and L9965TS are bidirectional SPI transceivers that, in a BMS system, allow communication between isolated devices into different voltage domains through a twisted-pair connection.

The devices belong to the L9965 chipset family for high voltage battery management systems monitoring and control.

• AEC-Q100 qualification ongoing
• Temperature grade 1: -40 °C to +125 °C operating temperature range
• HBM ESD classification level 2
• CDM ESD classification level C4B
• Full ISO26262 compliant, ASIL-D systems ready, documentation available
• Automatic wake-up of BMS/BMU MCU and PMIC from SHUTDOWN/SLEEP in case of fault detected in the chain
• Single or dual channel p/n in the same package for ring connection
• Up to 59 devices in chain supported
• Cable lengths verified up to 10 meters
• 10 MHz 4-wire SPI interface
• 4 Mbps 2-wire vertical interface (VIF)
• Supports both transformer and capacitive isolation
• Compressed burst data read for enhanced communication speed over the whole chain
• Broadcast write command to configure and control all devices in the chain (or a subset)
• Very low EMI susceptibility and emissions
• Compatible with 3.3 V and 5 V logics
• Supply voltage from 6 V to 24 V