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Key Specifications
Part Number Description Status VCC(Min)(V) VCC(Max)(V) Max Data Rate(Mbps) I/O (V) Bus fault voltage(V) Operating Temperature Range(℃) Pin/Package EV Kit Available?
UM3851S8E High-speed CAN transceiver Active 4.5 5.5 5 2.8 to 5.5 -58 to +58 -40 to 125 8/SOP8 Y
View All>>   Product Description
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. 
- 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
- VIO 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 VIO
- Thermally protected
Pin Configuration

- Automotive industry
- Industrial
- Control

Ordering Information

Part Number
Operating Temperature
Mark Code
Package Type
Shipping Qty
-40°C to +125°C
3000pcs/13 Inch
Tape & Reel
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