UM3851S8

The UM3851 is a high-speed CAN transceiver that provides an interface between a Controller Area Network (CAN) protocol controller and the physical two-wire CAN bus. The transceiver is designed for high-speed CAN applications in the automotive industry, providing differential transmit and receive capability to (a microcontroller with) a CAN protocol controller. The UM3851 offers improved Electro Magnetic Compatibility (EMC) and Electro Static Discharge (ESD) performance, and also features: - Ideal passive behavior to the CAN bus when the supply voltage is off - UM3851S8 and UM3851DA can be interfaced directly to microcontrollers with supply voltages from 3V to 5V The UM3851 implements the CAN physical layer as defined in ISO 11898-2:2016 and SAE J2284- 1 to SAE J2284-5. This implementation enables reliable communication in the CAN FD fast phase at data rates up to 5 Mbit/s. These features make the UM3851 an excellent choice for all types of HS-CAN networks, in nodes that do not require a standby mode with wake-up capability via the bus.

Applications

• Automotive industry
• Industrial

Key features

• Control ISO 11898-2:2016 and SAE J2284-1 to SAE J2284-5 compliant
• Timing guaranteed for data rates up to 5 Mbit/s in the CAN FD fast phase
• Suitable for 12V and 24V systems
• ΔVIO input on UM3851S8 and UM3851DA allows for direct interfacing with 3V to 5V microcontrollers (available in SOP8 and very small DFN8 packages respectively)
• EN input on UM3851S8E allows the microcontroller to switch the transceiver to a very low-current Off mode
• AEC-Q100 compliance
• Transceiver disengages from the bus when not powered up (zero load)
• High Electro Static Discharge (ESD) handling capability on the bus pins
• Transmit Data (TXD) dominant time-out function
• Undervoltage detection on pins VCC and ΔVIO
• Thermally protected