Eight-pin IC is drop-in replacement for common devices
A range of Controller Area Network (CAN) products from Texas Instruments offers full qualification to automotive grade Q100. The range includes the SN65HVD1040-Q1, a high speed transceiver that meets or exceeds the specifications of the ISO 11898 standard and is an enhanced drop-in replacement for commonly used eight-pin devices.
The SN65HVD1040-Q1 provides differential transmit capability to the communications bus and differential receive capability to a CAN controller at signalling rates of up to 1Mbit/s.
Designed for operation in the harsh environments commonly encountered in automotive applications, the device features overtemperature, cross-wire, over-voltage and 'loss of ground' protection from -27V to +40V. In addition, it boasts a common mode range of -12V to +12V and can withstand voltage transients from -200V to +200V, in accordance with ISO7637.
The device functions in two modes, user-selectable according to the voltage applied to pin eight of the device. In high-speed mode, the device is fully operational; in standby mode, the device enters a low current state with the receiver remaining active as a bus monitor. In this mode, a dominant bit of 5ms duration or greater on the bus is passed by the bus-monitor circuit to the receiver output. The local protocol controller can then reactivate the device when it needs to transmit to the bus.
A dominant time-out circuit in the SN65HVD1040 prevents the driver from blocking network communication with a hardware or software failure. The time-out circuit is triggered by a falling edge applied to pin one of the device. If no subsequent rising edge is seen before the time-out constant of the circuit expires, the driver is disabled. The circuit is then reset by the next rising edge.
The SN65HVD1040 is characterised for operation from -40°C to +125°C and is supplied in Small Outline Integrated Circuit (SOIC) packaging.
Features
Automotive qualified CAN transceiver
Meets or exceeds the requirements of ISO 11898-5
Low power (less than 12µA) standby mode with bus wake up
Tested in accordance with ISO 7637
ESD protected bus pins (±8kV HBM)
Bus fault protection of -27V to +40V
Dominant time-out function
Customer-specific configuration control can be supported along with major-change approval
High ElectroMagnetic Immunity (EMI)
Low ElectroMagnetic Emissions (EME)
Thermal shutdown protection
Power-up/down glitch-free bus inputs and outputs
High input impedance with low VCC
Monotonic outputs during power cycling
Applications
GMW3122 Dual-wire CAN physical layer
SAE J2284 high speed CAN for automotive applications
SAE J1939 standard data bus interface
ISO 11783 standard data bus interface
NMEA 2000 standard data bus interface
Industrial automation
DeviceNet data buses
For further information, including the SN65HVD1040 Datasheet and details on how to obtain Samples, pleaseclick here
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