This board implements a complete isolated 5-volt RS-485 node using an IL2985E low-power transceiver, an ILDC11-15E ultraminiature isolated DC-DC convertor, and a commodity boost regulator.
4 by 3 inch (100 by 75 mm) board provides screw terminal and test point connections.
The IL2985E is a low-power, fully-isolated, differential 5-volt bus transceiver. The ILDC11-15E isolates the 3.3-volt controller supply, and a boost regulator provides a fully-isolated five-volt bus supply.
The IL2985E is a low-power, 4 Mbps isolated RS-485 transceiver, with a typical total quiescent current of 2.4 mA. Compatible with 3.3 V or 5 V input logic; 7 kV bus ESD protection; 50 kV per microsecond transient immunity. 16-pin wide-body SOIC package with True 8™ mm creepage.