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1FEATURES

? Improved Drop-in Replacement for the

TJA1040

? ±12 kV ESD Protection

? Low-Current Standby Mode with Bus Wake-up:

5 μA Typical

? Bus-Fault Protection of –27 V to 40 V

? Rugged Split-Pin Bus Stability

? Dominant Time-Out Function

? Thermal Shutdown Removed

? Power-Up/Down Glitch-Free Bus Inputs and

Outputs

– High Input Impedance with Low VCC

– Monotonic Outputs During Power Cycling

? DeviceNet Vendor ID # 806

APPLICATIONS

? Down-Hole Drilling

? High Temperature Environments

? Vibration/Modal Analysis

? Multi-Channel Data Acquisition

? Acoustics/Dynamic Strain Gauges

? Pressure Sensors

SUPPORTS EXTREME TEMPERATURE

APPLICATIONS

? Controlled Baseline

? One Assembly/Test Site

? One Fabrication Site

? Available in Extreme (–55°C/210°C)

Temperature Range (1)

? Extended Product Life Cycle

? Extended Product-Change Notification

? Product Traceability

? Texas Instruments high temperature products

utilize highly optimized silicon (die) solutions

with design and process enhancements to

maximize performance over extended

temperatures. All devices are characterized

and qualified for 1000 hours continuous

operating life at maximum rated temperature.

DESCRIPTION

The SN65HVD1040 meets or exceeds the specifications of the ISO 11898 standard for use in applications

employing a Controller Area Network (CAN). As CAN transceivers, these devices provide differential transmit and

receive capability for a CAN controller at signaling rates of up to 1 megabit per second (Mbps). (2)

Designed for operation in especially harsh environments, the device features ±12 kV ESD protection on the bus

and split pins, cross-wire, overvoltage and loss of ground protection from –27 to 40 V, a –12 V to 12 V commonmode

range, and will withstand voltage transients from –200 V to 200 V according to ISO 7637.

The STB input (pin 8) selects between two different modes of operation; high-speed or low-power mode. The

high-speed mode of operation is selected by connecting STB to ground.

If a high logic level is applied to the STB pin of the SN65HVD1040, the device enters a low-power bus-monitor

standby mode. While the SN65HVD1040 is in the low-power bus-monitor standby mode, a dominant bit greater

than 5 μs on the bus is passed by the bus-monitor circuit to the receiver output. The local protocol controller may

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

during a hardware or software failure. The time-out circuit is triggered by a falling edge on TXD (pin 1). If no

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 on TXD.