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IL4822 Datasheet(PDF) 1 Page - NVE Corporation |
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IL4822 Datasheet(HTML) 1 Page - NVE Corporation |
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1 / 29 page  IL4822 / IL4622 / IL4685 IsoLoop ® is a registered trademark of NVE Corporation. *U.S. Patent number 5,831,426; 6,300,617 and others. Rev. E NVE Corporation 11409 Valley View Road, Eden Prairie, MN 55344-3617 Phone: (952) 829-9217 YouTube.com/NveCorporation ©NVE Corporation High-Speed Isolated RS-422 / RS-485 Transceivers with Integrated DC-to-DC Convertors Block Diagrams Features • 40 Mbps transceiver • Integrated ¼ watt, DC-to-DC convertor • 3.3 V or 5 V bus supplies; both fully compatible and interoperable with 5 V buses • 1/5 Unit Load; 160 node fanout • Fully PROFIBUS compliant (IL4822) • 2500 VRMS isolation voltage • Up to 16.5 kV bus ESD protection • Full failsafe • Overcurrent and thermal shutdown protection • −40 °C to 85 °C temperature range • VDE 0884-17 certified; UL1577 registered • EN 55032 CISPR 32 Class B compliant • 0.3" True 8™ mm 16-pin SOIC package Applications • Factory automation • Industrial control networks • Medical instruments Description IL4xxx-Series Transceivers are high-speed, fully-isolated, differential bus transceivers with integrated DC-to-DC convertors to provide fully-isolated bus supplies from the 3.3 V controller supply. The IL4822 generates a 5 V bus supply; the IL46xx versions generate 3.3 V bus supplies. The 3.3 V versions can provide more current than 5 V bus supplies. Despite their 3.3 V bus supplies, IL46xx versions are fully compatible and interoperable with 5 V buses. IL4x22 versions have full-duplex connections for RS-422 or RS-485 buses; the IL4685 has a half-duplex transceiver generally used with RS-485. The IL4822 is fully PROFIBUS compliant. The devices use NVE’s proven, patented* spintronic Giant Magnetoresistance (GMR) isolation technology and IsoLoop® high-efficiency micro-scale isolation transformers. A unique ceramic/polymer composite barrier provides full isolation and virtually unlimited barrier life. Integrated shielding and DC-to-DC convertor frequency hopping minimize EMI. Parts are EN 55032 CISPR 32 Class B compliant with just a small amount of stitching capacitance. Current limiting and thermal shutdown features protect against bus short circuits and contention to prevent excessive power dissipation. DE D R RE A B IL4x22 VDD1A VDD2 Y Z ,- , 4 4- ) * IL4685 8,, ) 8,, ) |
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