Texas Instruments Incorporated introduced a controller area network (CAN) transceiver that exceeds all DeviceNet physical layer specifications. The SN65HVD252 supports critical time budgets for latency and readily connects to a 3.3-V microcontroller. Designed for operation in harsh industrial environments such as factory automation, process control equipment, networked sensors or building automation, this device features bus-pin voltage protection from –36-V to 40-V, driver output current limiting, and over-temperature driver shutdown.
Key features and benefits of the SN65HVD252 and SN65HVD253
- Propagation delay is 10 percent faster than DeviceNet requirements, allowing more flexibility in system timing budgets.
- Hysteresis is 13 percent higher than the competition, providing greater noise immunity.
- Electrostatic discharge (ESD) is two to six times better than the nearest competitor for increased system reliability.
- The SN65HVD253, a similar industrial CAN transceiver, offers a listen-only loopback feature so that the local node controller can synchronize its baud rate with that of the CAN bus.
- Both devices work well with isolation devices such as TI's ISO7421 digital isolator.
Availability and pricing
The SN65HVD252 and SN65HVD253 are available now in an SOIC (D) package with a suggested resale price of $0.80 in quantities of 1,000.
