Compact high-speed RS-485 receivers target demanding industrial applications

Accommodating the complex demands of next-generation high-speed serial communications designs, a new family of high-speed RS-485/RS-422 receivers has been introduced by Exar. The XR33180, XR33181, XR33183, and XR33184 occupy a 3mm x 3mm footprint and feature 52Mbps data rates, fast 15ns propagation delay and 2ns maximum receiver skew. The family is best suited for high-performance industrial applications such as multi-drop clock distribution, telecom networking, robotic control, process automation and local area networking, says the company. The devices operate from either a 3.3V or 5V supply and are available in tiny 5-pin and 6-pin TSOT23 packages, ideal for high-speed point-to-point RS-485 applications where space is a concern. The XR33184 includes a low voltage logic pin that eliminates the need for a level shifter when interfacing to MCUs or FPGAs that run off of lower supply voltages. "These stand-alone receivers add point-to-point operability and a tiny footprint option to our broad family of RS-485 serial transceivers," said Dale Wedel, VP of high-performance analog, Exar. "With features like the enhanced ESD protection, a logic supply pin, true fail-safe circuitry and enhanced receiver failsafe protection, these receivers meet the growing demands of today’s high performance serial communication applications." The RoHS-compliant devices feature ±15kV ESD protection on the receiver inputs and exceed the highest ESD rating of IEC 61000-4-2 and operate over an extended temperature range of -40C to +125C.