TJA1040T/CM,118

CAN 接口集成电路 High-speed CAN transceiver with standby mode

Operating modes

The TJA1040 provides two modes of operation which are selectable via pin STB. See Table 1 for a description of the modes of operation.

Wake-up TJA1040T/CM

In the standby mode the bus lines are monitored via a low-power differential comparator. Once the low-power differential comparator has detected a dominant bus level for more than tBUS, pin RXD will become LOW.

GENERAL DESCRIPTION TJA1040T/CM

The TJA1040 is the interface between the Controller Area Network (CAN) protocol controller and the physical bus. It is primarily intended for high speed applications, up to 1 MBaud, in passenger cars. The device provides differential transmit capability to the bus and differential receive capability to the CAN controller.

FEATURES TJA1040T/CM

• Fully compatible with the ISO 11898 standard

• High speed (up to 1 MBaud)

• Very low-current standby mode with remote wake-up capability via the bus

• Very low ElectroMagnetic Emission (EME)

• Differential receiver with high common-mode range for ElectroMagnetic Immunity (EMI)

• Transceiver in unpowered state disengages from the bus (zero load)

• Input levels compatible with 3.3 V and 5 V devices

• Voltage source for stabilizing the recessive bus level if split termination is used (further improvement of EME)

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