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The SN65HVD1050DR meets or exceeds the specifications of the ISO 11898 standard and is suitable for applications using Controller Area Network (CAN).

As a CAN transceiver, this device provides differential transmission capability for the bus and differential reception capability for the CAN controller, with a signal rate of up to 1 megabits per second (Mbps) (1)

The SN65HVD1050DR is specifically designed for operation in extremely harsh environments. Therefore, the device features cross-line, overvoltage, and ground loss protection (-27 V to 40 V), over-temperature shutdown, a common-mode voltage range of -12 V to 12 V, and can withstand voltage transients of -200 V to 200 V as specified by the ISO 7637 standard.

Pin 8 provides two different operating modes: high-speed mode or silent mode. High-speed mode is selected by connecting the S pin (Pin 8) to ground.

If a high logic level is applied to the S pin of the SN65HVD1050DR, the device enters listen-only mode, where the driver is disabled while the receiver remains fully functional.

In silent mode, all bus activity is passed through the receiver output to the local protocol controller. When data transmission is required, the local protocol controller reverses this low-current silent mode by applying a logic low level to the S pin to restore full-function operation.

The dominant timeout circuit in the SN65HVD1050DR prevents the driver from blocking network communication due to hardware or software failures. The timeout circuit is triggered by the falling edge of TXD (pin 1). If no rising edge is detected before the circuit's timeout constant expires, the driver is disabled. The circuit is then reset by the next rising edge of TXD.  

Vref (pin 5) can serve as a VCC/2 voltage reference to stabilise the output common-mode voltage point.

The SN65HVD1050DR is suitable for an operating temperature range of –40°C to 125°C.

Features of the SN65HVD1050DR

Improved alternative to the TJA1050

High electromagnetic compatibility (EMI)

Extremely low electromagnetic emission (EME)

Complies with or exceeds the following standards

ISO 11898-2

CAN bus fault protection (-27 V to 40 V)  

Dominant timeout function  

Glitch-free CAN bus during power-on and power-off  

Input and output  

High input impedance with low VCC voltage  

Monotonic output change during power cycling

Applications of the SN65HVD1050DR

Industrial automation

DeviceNet™ data bus (supplier ID #806)

SAE J2284 high-speed CAN bus (for automotive applications)

SAE J1939 standard data bus interface

ISO 11783 standard data bus interface

NMEA 2000 standard data bus interface

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