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5V CAN transceiver offers DeviceNet compliance

Posted: 21 Sep 2010     Print Version  Bookmark and Share

Keywords:transceiver  factory automation  DeviceNet physical layer 

Texas Instruments Inc. unveils the SN65HVD252, a controller area network (CAN) transceiver that claims to exceed all DeviceNet physical layer specifications and is targeted for operation in industrial environments such as factory automation, process control equipment, networked sensors or building automation.

CAN Transceiver

The SN65HVD252 connects to a 3.3V microcontroller and features bus-pin voltage protection from -36V to 40V. Key features include driver output current limiting, and over-temperature driver shutdown.

TI said the CAN transceiver's propagation delay is 10 per cent faster than DeviceNet requirements. Its hysteresis is reportedly 13 per cent higher than rival products, which makes for improved noise immunity. Electrostatic discharge is up to six times better than that of the closest competitor.

A listen-only loopback feature that allows the local node controller to synchronise its baud rate with that of the CAN bus is available in a variant—the SN65HVD253.

TI's ISO7421 digital isolator and other isolation devices can work with both the SN65HVD252 and the SN65HVD253.

The SN65HVD252 and SN65HVD253 are available now in an SOIC (D) package with a suggested resale price of Rs.37.36 ($0.80) in quantities of 1,000.

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