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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?
UM3842S8S High-speed CAN transceiver with standby mode 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 UM3842 high–speed CAN transceiver 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 the differential transmit and receive capability to (a microcontroller with) a CAN protocol controller. The UM3842 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
• A very low–current Standby mode with bus wake–up capability
• UM3842S8 and UM3842DA can be interfaced directly to microcontrollers with supply voltages from 3V to 5V
The UM3842 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 UM3842 an excellent choice for all types of HS–CAN networks, in nodes that require a low–power mode with wake–up capability via the CAN bus.
- ISO 11898–2:2016 and SAE J2284–1 to SAE J2284–5 compliant
- Timing guaranteed for data rates up to 5Mbit/s in the CAN FD fast phase
- VIO input on UM3842S8 and UM3842DA allows for direct interfacing with 3 V to 5 V
- SPLIT voltage output on UM3842S8S for stabilizing the recessive bus level
- Available in SOP8 package and leadless DFN8 package (3.0 mm  3.0 mm) with improved Automated Optical Inspection (AOI) capability
- AEC–Q100 compliant
- Very low-current Standby mode with host and bus wake-up capability
- Transmit Data (TXD) dominant time-out function
- Bus-dominant time-out function in Standby mode
- Undervoltage detection on pins VCC and VIO
- High ESD handling capability on the bus pins (±8 kV)
- High voltage robustness on CAN pins (±58V)
- Bus pins protected against transients in automotive environments
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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