●Overview
●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 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
●The TJA1049 implements the CAN physical layer as defined in the current ISO11898 standard (ISO11898-2:2003, ISO11898-5:2007 and the pending updated version of ISO 11898-2:2016). Pending the release of ISO11898-2:2016 including CAN FD and SAE J2284-4/5, additional timing parameters defining loop delay symmetry are specified. This implementation enables reliable communication in the CAN FD fast phase at data rates up to 5 Mbit/s.
●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.
●MoreLess
●## Features
●### General
● Fully ISO 11898-2:2003 and ISO 11898-5:2007 compliant
● Timing guaranteed for data rates up to 5 Mbit/s in the CAN FD fast phase
● 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
● AEC-Q100 qualified
● Dark green product (halogen free and Restriction of Hazardous Substances (RoHS) compliant)
●### 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)
●### Protection
● High ESD handling capability on the bus pins
● Bus pins protected against transients in automotive environments
● Transmit Data (TXD) dominant time-out function
● Bus-dominant time-out function in Standby mode
● Undervoltage detection on pins VCC and VIO
● Thermally protected
●## Features
