TJA1049
High-speed CAN transceiver with Standby mode
Rev. 3 — 16 September 2013
Product data sheet
1. General description
The TJA1049 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 (up to 1 Mbit/s) CAN applications in the automotive
industry, supplying the differential transmit and receive capability to (a microcontroller
with) a CAN protocol controller.
The TJA1049 belongs to the third generation of high-speed CAN transceivers from NXP
Semiconductors, offering significant improvements over first- and second-generation
devices such as the TJA1040. It offers improved ElectroMagnetic Compatibility (EMC)
and ElectroStatic 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
• TJA1049T/3 and TJA1049TK/3 can be interfaced directly to microcontrollers with
supply voltages from 3 V to 5 V
These features make the TJA1049 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.
2. Features and benefits
2.1 General
Fully ISO 11898-2 and ISO 11898-5 compliant
Suitable for 12 V and 24 V systems
Low ElectroMagnetic Emission (EME) and high ElectroMagnetic Immunity (EMI)
VIO input on TJA1049T/3 and TJA1049TK/3 allows for direct interfacing with 3 V to 5 V
microcontrollers
SPLIT voltage output on TJA1049T and TJA1049TK for stabilizing recessive bus level
Both variants available in SO8 and HVSON8 packages
Leadless HVSON8 package (3.0 mm 3.0 mm) with improved Automated Optical
Inspection (AOI) capability
Dark green product (halogen free and Restriction of Hazardous Substances (RoHS)
compliant)
2.2 Low-power management
Very low-current Standby mode with host and bus wake-up capability
Functional behavior predictable under all supply conditions
Transceiver disengages from the bus when not powered up (zero load)