Single chip CAN transceiver cuts isolator system component count and size

Texas Instruments Inc. (Dallas, Texas) claims to have introduced the first isolated controller-area network (CAN) transceiver. Combining CAN and isolation technologies, the ISO1050 not only reduces component count, but lowers system-level power consumption by 38 percent compared to isolated optocoupler solutions. It is also expected to greatly simplify board design in applications as wide ranging as industrial automation, motor control and medical equipment.

The ISO1050 is a galvanically isolated CAN transceiver that meets DeviceNet and CAN timing requirements. It typically achieves a loop delay of 150ns, allowing designers to use longer network cables compared to other common isolated CAN solutions. Up to 4000 VPEAK of galvanic isolation is provided, preventing noise currents on a data bus or other circuits from entering the local ground and interfering with or damaging sensitive circuitry. Meanwhile, the life expectancy of this device is more than 25 years, making it well suited to applications such as motor or power substation control.

The ISO1050 is available in an 8-pin DUB package with a 6.1mm width that suits high-voltage applications where a minimum clearance is required. A 16-pin SOIC package will be available in late 2009. Both versions boast a temperature range from -55 to 105oC, meeting industrial requirements.

Samples and evaluation models can be ordered at TI’s website

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