TJA1041A
High-speed CAN transceiver
Rev. 04 — 29 July 2008
Product data sheet
1. General description
The TJA1041A provides an advanced interface between the protocol controller and the
physical bus in a Controller Area Network (CAN) node. The TJA1041A is primarily
intended for automotive high-speed CAN applications (up to 1 Mbit/s). The transceiver
provides differential transmit capability to the bus and differential receive capability to the
CAN controller. The TJA1041A is fully compatible to the ISO 11898 standard, and offers
excellent ElectroMagnetic Compatibility (EMC) performance, very low power
consumption, and passive behavior when supply voltage is off. The advanced features
include:
• Low-power management, supporting local and remote wake-up with wake-up source
recognition and the capability to control the power supply in the rest of the node
• Several protection and diagnosis functions including short circuits of the bus lines and
first battery connection
• Automatic adaptation of the I/O-levels, in line with the supply voltage of the controller
2. Features
2.1 Optimized for in-vehicle high-speed communication
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Fully compatible with the ISO 11898 standard
Communication speed up to 1 Mbit/s
Very low ElectroMagnetic Emission (EME)
Differential receiver with wide common-mode range, offering high
ElectroMagnetic Immunity (EMI)
Passive behavior when supply voltage is off
Automatic I/O-level adaptation to the host controller supply voltage
Recessive bus DC voltage stabilization for further improvement of EME behavior
Listen-only mode for node diagnosis and failure containment
Allows implementation of large networks (more than 110 nodes)
2.2 Low-power management
I Very low-current in Standby and Sleep mode, with local and remote wake-up
I Capability to power down the entire node, still allowing local and remote wake-up
I Wake-up source recognition
2.3 Protection and diagnosis (detection and signalling)
I TXD dominant clamping handler with diagnosis
