The IL3085-1E low cost, galvanically isolated RS-485 transceiver from NVE offers data rate of 4Mbps and very low quiescent current. The IL3085 series delivers at least 1.5V into a 27Ω load for excellent data integrity over long cables, and is also compatible with 3V power supplies. A unique ceramic/polymer composite barrier provides excellent isolation and virtually unlimited barrier life. This particular device uses NVE’s patented IsoLoop spintronic Giant Magnetoresistance (GMR) technology and comes in a miniature QSOP package.

• Surface-mount low-cost, galvanically isolated RS-485 transceiver
• 3V and 5V power supplies
• Data rate of 4Mbps
• 7kV bus ESD protection
• Isolation of 2.5kV_RMS per UL 1577
• Working voltage of 300V_RMS per VDE V 0884-10
• Temperature range of −40°C to +85°C
• Typical common mode transiend immunity of 50kV/μs (30kV/μs minimum)
• Supports up to 32 nodes
• Thermal shutdown protection
• UL 1577 recognised, VDE V 0884-10 certified; meets or exceeds ANSI RS-485 and ISO 8482:1987(E)
• QSOP package

The IL3085 has current limiting and thermal shutdown features to protect against output short circuits and bus contentions that may cause excessive power dissipation, and also incorporate a “fail-safe if open” design, ensuring a logic high on R if the bus lines are disconnected or “floating.”

Typical applications for the IL3085 series include:

• Factory automation
• Industrial control networks
• Building environmental controls
• Equipment covered under IEC 61010-1 Edition 3
• 5kV_RMS rated IEC 60601-1 medical applications

The below table gives the recommended operating conditions for the NVE IL3085 isolated RS-485 transceiver series, including IL3085-1E: