描述 Description

The TJA1046 is a dual high-speed CAN transceiver that provides two interfaces between aController Area Network (CAN) protocol controller and the physical two-wire CAN-bus. Itis composed of two fully independent TJA1044GT transceivers. The transceivers aredesigned for high-speed CAN applications in the automotive industry, providing thedifferential transmit and receive capability to (a microcontroller with) a CAN protocolcontroller. The TJA1046 guarantees robust communication at data rates up to 5 Mbit/s asused in, for example, CAN FD networks.
The TJA1046 offers a feature set optimized for 12 V automotive applications and excellentElectroMagnetic Compatibility (EMC) performance.
Additionally, the TJA1046 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
Excellent EMC performance at speeds up to 500 kbit/s, even without a commonmode choke

The HVSON package allows for more than 70 % PCB space saving compared with traditional SOpackages. These features make the TJA1046 an excellent choice for networks containingmore than one HS-CAN interface requiring a low-power mode with wake-up capability viathe CAN-bus, especially for body and gateway control units.
The TJA1046 implements the CAN physical layer as defined in the current ISO11898 standard(ISO11898-2: 2003, ISO11898-5: 2007 and the pending updated version of ISO11898-2:2016). Pending the release of ISO11898-2:2016 including CAN FD andSAE-J2284-4/5, additional timing parameters defining loop delay symmetry are specified.This implementation enables reliable communication in the CAN FD fast phase at datarates up to 5 Mbit/s.

特性 Features

General
? Two fully independent TJA1044GT HS-CAN transceivers combined in a singlepackage
? Fully ISO 11898-2:2003 and ISO 11898-5:2007 compliant
? Timing guaranteed for data rates up to 5 Mbit/s
? Improved TXD to RXD propagation delay of 210 ns
? Very low-current Standby mode with host and bus wake-up capability
? Optimized for use in 12 V automotive systems
? EMC performance satisfies 'Hardware Requirements for LIN, CAN and FlexRayInterfaces in Automotive Applications’, Version 1.3, May 2012.
? Leadless HVSON14 package (3.0 mm × 4.5 mm) with improved Automated OpticalInspection (AOI) capability
? Can interface with 3.3 V and 5 V-supplied microcontrollers, provided themicrocontroller I/Os are 5 V tolerant
? AEC-Q100 qualified
? Dark green product (halogen free and Restriction of Hazardous Substances(RoHS) compliant)
Predictable and fail-safe behavior
? Functional behavior predictable under all supply conditions
? Transceivers disengage from bus when not powered (zero load)
? Transmit Data (TXD) and bus dominant time-out functions
? Internal biasing of TXDx and STBx input pins
Protection
? High ESD handling capability on the bus pins (8 kV IEC and HBM)
? Bus pins protected against transients in automotive environments
? Undervoltage detection on VCCx pins
? Thermally protected