IL485 Isolated RS485 Interface Functional Diagram Features 3.3 V Input Supply Compatible 2500 V Isolation (1 min.) RMS 25 ns Maximum Propagation Delay DE ISODE 35 Mbps Data Rate 1 ns Pulse Skew (typ.) Designed for Multi-point Transmission D on Long Bus Lines in Noisy Environments 60 mA Driver Output Capability A R Thermal Shutdown Protection B Meets or Exceeds ANSI RS-485 and ISO 8482:1987(E) RE 40C to +85C Temperature Range PROFIBUS International Component Recognition IL485 16-Pin SOIC Package UL1577 and IEC 61010-2001 Approval V (AB) DE RE ISODE R D Mode ID Applications 200 mV L L L H X Receive Profibus/RS485 Systems 200 mV L L L L X Receive Multiple Data Point Transmission 7<V<12 X H X Z X Receive/Drive ID Description 1.5 V H L H H H Drive The IL485 is a galvanically isolated, high-speed differential bus 1.5 V H L H L L Drive transceiver, designed for bidirectional data communication on balanced transmission lines. The devices use NVEs patented* Open L L L H X Indeterminate IsoLoop spintronic Giant Magnetoresistance (GMR) technology. The IL485 is the first isolated RS-485 interface in a standard 16-pin H = High Level, L = Low Level SOIC package that meets the ANSI Standards EIA/TIA-422-B and X = Irrelevant, Z = High Impedance RS-485 and is compatible with 3.3V input supplies. The IL485 has current limiting and thermal shutdown features to protect against output short circuits and bus contention situations that could cause excessive power dissipation. With 1 ns pulse skew and 16 ns propagation delay, the IL485 is ideal for PROFIBUS applications. Isoloop is a registered trademark of NVE Corporation. REV. Q *U.S. Patent number 5,831,426 6,300,617 and others. NVE Corporation 11409 Valley View Road, Eden Prairie, MN 55344-3617 Phone: (952) 829-9217 Fax: (952) 829-9189 www.IsoLoop.com 2008 NVE Corporation IL485 (11) Absolute Maximum Ratings Parameters Symbol Min. Typ. Max. Units Test Conditions Storage Temperature T 65 150 C S Ambient Operating Temperature T 40 100 C A Voltage Range at A or B Bus Pins 7 12 V (1) Supply Voltage V , V 0.5 7 V DD1 DD2 Digital Input Voltage 0.5 V + 0.5 V DD Digital Output Voltage 0.5 V + 1 V DD 725 25C Continuous Total Power Dissipation mW 377 85C Maximum Output Current I 95 mA O Lead Solder Temperature 260 C 10 sec. ESD 2 kV HBM Recommended Operating Conditions Parameters Symbol Min. Typ. Max. Units Test Conditions V 3.0 5.5 DD1 Supply Voltage V V 4.5 5.5 DD2 Input Voltage at any Bus Terminal V 12 V I (separately or common mode) V 7 IC 2.4 V = 3.3 V DD1 High-Level Digital Input Voltage V V V IH DD1 3.0 V = 5.0 V DD1 Low-Level Digital Input Voltage V 0 0.8 V IL (2) Differential Input Voltage V +12/ 7 V ID High-Level Output Current (Driver) I 60 mA OH High-Level Digital Output Current I 8 mA OH (Receiver) Low-Level Output Current (Driver) I 60 mA OL Low-Level Digital Output Current I 8 mA OL (Receiver) Ambient Operating Temperature T 40 85 C A Transient Immunity 20 kV/s Digital Input Signal t ,t DC Stable IR IF Rise and Fall Times Insulation Specifications Parameters Symbol Min. Typ. Max. Units Test Conditions Creepage Distance 8.08 mm 14 Barrier Impedance >10 7 pF Leakage Current 0.2 A 240 V , 60 Hz RMS Safety and Approvals IEC61010-1 TUV Certificate Numbers: N1502812, N1502812-101 Classification: Reinforced Insulation Model Package Pollution Degree Material Group Max. Working Voltage IL485 0.3 SOIC II III 300 V RMS UL 1577 Component Recognition Program File Number: E207481 Rated 2500V for 1 minute RMS Soldering Profile Per JEDEC J-STD-020C, MSL=2 2 NVE Corporation 11409 Valley View Road Eden Prairie, MN 55344-3617 USA Telephone: (952) 829-9217 Fax (952) 829-9189 Internet: www.isoloop.com