描述 Description

The TJA1048 is a dual high-speed CAN transceiver that provides an interface between aController 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 CANprotocol controller.
The TJA1048 belongs to the third generation of high-speed CAN transceivers from NXPSemiconductors, offering significant improvements over first- and second-generationdevices such as the TJA1040. It offers improved Electro Magnetic 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 on both channels
Can be interfaced directly to microcontrollers with supply voltages from 3 V to 5 V
The TJA1048 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 the updated version of ISO11898-2:2016 including CAN FD and SAEJ2284-4/5, additional timing parameters defining loop delay symmetry are specified. Thisimplementation enables reliable communication in the CAN FD fast phase at data rates upto 5 Mbit/s.
These features make the TJA1048 an excellent choice for all types of HS-CAN networks containingmore than one HS-CAN interface that require a low-power mode with wake-up capability viathe CAN bus, especially for Body Control and Gateway units.

特性 Features

2.1 General
Two TJA1042/3 HS-CAN transceivers combined monolithically in a single package
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 allows for direct interfacing with 3 V to 5 V microcontrollers
Available in SO14 and HVSON14 packages
Leadless HVSON14 package (3.0 mm × 4.5 mm) with improved Automated OpticalInspection (AOI) capability
Dark green product (halogen free and Restriction of Hazardous Substances (RoHS)compliant)
AEC-Q100 qualified
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)
Wake-up receiver powered by VIO; allows shut down of VCC
2.3 Protection
High ESD handling capability on the bus pins
Bus pins protected against transients in automotive environments
Transmit Data (TXD) dominant time-out function
Undervoltage detection on pins VCC and VIO
Thermally protected