SN65HVD1040

具有超低功耗待机模式和总线唤醒的工业 CAN 收发器

The meets or exceeds the specifications of the ISO 11898 standard for use in applications employing a Controller Area Network CAN. As a CAN bus transceiver, the SN65HVD1040 device provides differential transmit and receive capability for a CAN controller at signaling rates of up to 1 Mbps1.

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 V to 40 V, overtemperature shutdown, a –12 V to 12 V common-mode range, and will withstanding 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.

The SPLIT output pin 5 is available on the SN65HVD1040 as a VCC/2 common-mode bus voltage bias for a split-termination network.

The SN65HVD1040 is characterized for operation from –40°C to 125°C.

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Improved Drop-in Replacement for the TJA1040

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±12 kV ESD Protection

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Low-Current Standby Mode With Bus Wakeup:

5 µA Typical

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Bus-Fault Protection of –27 V to 40 V

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Rugged Split-Pin Bus Stability

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Dominant Time-Out Function

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Power-Up/Down Glitch-Free Bus Inputs and

Outputs

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High Input Impedance With Low VCC

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Monotonic Outputs During Power Cycling

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DeviceNet™ Vendor ID Number 806