TJA1042 Datasheet, PDF (1/20 Pages) NXP Semiconductors – High-speed CAN transceiver with Standby mode

TJA1042
High-speed CAN transceiver with Standby mode
Rev. 02 — 8 July 2009
Product data sheet
1. General description
The TJA1042 is a high-speed CAN transceiver that 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, providing the differential transmit and receive capability to (a
microcontroller with) a CAN protocol controller.
The TJA1042 is a step up from the TJA1040, PCA82C250 and PCA82C251 high-speed
CAN transceivers. 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
• Direct interfacing to microcontrollers with 3 V to 5 V supply voltages on TJA1042T/3
and TJA1042TK/3
These features make the TJA1042 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
2.1 General
I Fully ISO 11898-2 and ISO 11898-5 compliant
I Suitable for 12 V and 24 V systems
I Low ElectroMagnetic Emission (EME) and high ElectroMagnetic Immunity (EMI)
I V_IO input on TJA1042T/3 and TJA1042TK/3 allows for direct interfacing with 3 V to 5 V
microcontrollers (available in SO8 and very small HVSON8 packages respectively)
I SPLIT voltage output on TJA1042T for stabilizing the recessive bus level (available in
SO8 package only)
2.2 Low-power management
I Very low-current Standby mode with host and bus wake-up capability
I Functional behavior predictable under all supply conditions
I Transceiver disengages from the bus when not powered up (zero load)
2.3 Protections
I High ESD handling capability on the bus pins
I Bus pins protected against transients in automotive environments