IL485W Isolated RS485 Interface With Handshake Functional Diagram Features 2500 V Isolation (1 min.) RMS 25 ns Maximum Propagation Delay 35 Mbps Data Rate DE ISODE 1 ns Pulse Skew (typ.) Designed for Multi-point Transmission D on Long Bus Lines in Noisy Environments 60 mA Driver Output Capability A Thermal Shutdown Protection R B Meets or Exceeds ANSI RS-485 and ISO 8482:1987(E) RE 40C to +85C Temperature Range OUT IN 1 1 PROFIBUS International Component Recognition 16-Pin SOIC Package UL1577 and IEC 61010-2001 Approval IL485W Applications V (AB) DE RE ISODE R D Mode ID Profibus/RS485 Systems 200 mV L L L H X Receive Multiple Data Point Transmission 200 mV L L L L X Receive Description 7<V<12 X H X Z X Receive/Drive I The IL485W is a galvanically isolated, high-speed differential bus 1.5 V H L H H H Drive transceiver, designed for bidirectional data communication on 1.5 V H L H L L Drive balanced transmission lines. The devices use NVEs patented* IsoLoop spintronic Giant Magnetoresistance (GMR) technology. The Open L L L H X Indeterminate IL485W 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 IL485W has current limiting and thermal shutdown features to RE IN1 OUT1 protect against output short circuits and bus contention situations that L L L could cause excessive power dissipation. L H H H X Z With 1 ns pulse skew and 16 ns propagation delay, the IL485W is ideal for PROFIBUS applications. DE/ISODE and IN1/OUT1 allow isolated RTSAS and DTSAS handshaking. Isoloop is a registered trademark of NVE Corporation. REV. N *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 IL485W (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 5.5 V 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 Supply Voltage V V 4.5 5.5 V DD1, DD2 Input Voltage at any Bus Terminal V 12 V I (separately or common mode) V 7 IC High-Level Digital Input Voltage V 3.0 V V IH 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 IL485W 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