Half-duplex transceiver targets industrial, remote data collection apps - Embedded.com

Half-duplex transceiver targets industrial, remote data collection apps


Fremont, Calif.—Exar Corp. released the SP4082E, a highly integrated 5V RS-485/RS-422 half duplex transceiver that targets remote E-metering monitoring, building automation, HVAC controls, security camera systems and applications on long, or un-terminated transmission lines.

The SP4082E is designed for reliable, bidirectional communication on multipoint bus transmission lines and contains one differential driver and one differential receiver. It supports the entire common-mode voltage range from -7V to +12V.

Receivers are specially designed to fail-safe to a logic high output state if the inputs are left un-driven or shorted. In addition, all receivers have exceptionally high input impedance, which places only 1/8th the standard load on a shared bus. All RS-485 bus-pins are protected against severe ESD events up to ±15kV (Human Body Model).

The device operates from a single 5.0V power supply and draws negligible quiescent power. The device can independently enable and disable the driver and receiver and enter a low power shutdown mode if both driver and receiver are disabled. All outputs maintain high impedance in shutdown or when powered-off.

Pricing: $0.49 each in 1,000-piece quantities.
Availability: Samples are available now.
Datasheet: click here.

Exar Corp., www.exar.com

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