50Mbit/s RS-485 transceiver series protects communications

Analog Devices has announced two 50Mbit/s RS-485/RS-422 transceivers. The ADM3065E and ADM3066E transceivers are designed for use in harsh environments including industrial automation, motor control, military and avionics.

The ADM3065E and ADM3066E transceivers combine IEC61000-4-2 Level 4 electrostatic discharge (ESD) protection, high speed data communication, support of 1.8V input/output (I/O) logic (ADM3066E), and an industrial temperature range in small, space saving packages. According to Analog Devices, these features provide design flexibility while simplifying implementation and improving performance of standard RS-485 communication links. System level IEC ESD threats have discharge levels with higher peak currents and voltages compared to HBM (Human Body Model) ESD. The ADM306xE’s IEC ESD level protection is for customers operating in industrial environments. With the receiver fail safe, applications are immune to common, real-world faults such as incorrect wiring which cause opens or shorts. A receiver fail-safe guarantees a known state on the data bus. Glitch-free, hot swap capability enables error-free data operation when a circuit board is inserted into a powered backplane to ensure motors are properly controlled, meters correctly read and machinery runs smoothly with valid data. The RS-485 transceivers also comply with popular protocols such as Profibus, BACnet and Modbus to support a variety of network topologies.

  The ADM306xE transceiver series operates with a 3.0 to 5.5V voltage range on VCC. The ADM3066E integrates a VIO logic supply, enabling a flexible digital interface capable of operating as low as 1.62V and allowing direct connection to low power processors and field programmable gate arrays (FPGAs) that operate at 1.8V. The ADM306xE transceiver series offer IEC61000-4-2 ESD protection provided on the bus pins in addition to receiver short circuit, open circuit, and floating input failsafe protection. The transceivers also feature a high data rate, up to 50Mbit/, required by high speed motor control applications, extended industrial temperature ranges of -40 to +125 degree C and connectivity for 128 nodes on the bus.

The ADM3065E is available now in eight-lead, 3.0 x 3.0mm micro small outline package (MSOP) and an eight-lead, narrow body small outline integrated circuit (SOIC). The ADM3066E is available this month and offered in a 10-lead 3.0 x 3.0mm lead frame chip scale package (LFCSP) and 10-lead 3.0 x 3.0mm MSOP.




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