MaxLinear — MxL831xx RS-485 Transceivers

MaxLinear has launched two families of RS-485 serial transceivers which provide a reliable communications interface and low EMI in harsh industrial environments.

The slew-limited output drivers in the new MxL831xx transceivers reduce the transmission of EMI to protect sensitive equipment nearby, and reduce the reflections caused by cables that are improperly terminated.

The new MaxLinear offering consists of four products in two families: the MxL8310x and the MxL8311x. The MxL83101 and MxL83102 transceivers operate from a 5 V power supply. The MxL83111 and MxL83112 operate from a power-supply range of 3 V to 5.5 V. This allows for single product qualification for use in both 3.3 V and 5 V systems.

The transceivers are suitable for bidirectional communication on balanced multi-point bus transmission lines. They conform to the specifications of the RS-485 and RS-422 EIA standards. The bus pins tolerate electrical fast transient (EFT) events as specified by the IEC 61000-4-4 standard, protecting the system from short, high-voltage bursts that are caused by switch contactors, relays, faulty power connections or other sources.

The new transceivers are available in an industry-standard package and pin-out. Robust, reliable and interoperable with other RS-485 equipment, the MxL831xx products are well suited to a wide range of applications in demanding environments, and provide a secure way to broaden a manufacturer’s supplier base for crucial connectivity components.