Signal and Power Isolated RS-485 Transceiver with 15 kV ESD Protection Data Sheet ADM2582E/ADM2587E FEATURES FUNCTIONAL BLOCK DIAGRAM V V CC ISOOUT Isolated RS-485/RS-422 transceiver, configurable as half or full duplex isoPower DC-TO-DC CONVERTER isoPower integrated isolated dc-to-dc converter OSCILLATOR RECTIFIER 15 kV ESD protection on RS-485 input/output pins Complies with ANSI/TIA/EIA-485-A-98 and ISO 8482:1987(E) V ISOIN REGULATOR ADM2582E data rate: 16 Mbps ADM2587E data rate: 500 kbps 5 V or 3.3 V operation DIGITAL ISOLATION iCoupler TRANSCEIVER Connect up to 256 nodes on one bus Y Open- and short-circuit, fail-safe receiver inputs ENCODE DECODE D TxD Z High common-mode transient immunity: >25 kV/s Thermal shutdown protection DE ENCODE DECODE Safety and regulatory approvals UL recognition: 2500 V rms for 1 minute per UL 1577 A VDE Certificates of Conformity RxD DECODE ENCODE R B DIN EN 60747-5-2 (VDE 0884 Part 2): 2003-01 V = 560 V peak IORM RE ADM2582E/ADM2587E Operating temperature range: 40C to +85C Highly integrated, 20-lead, wide-body SOIC package GND GND 1 2 ISOLATION BARRIER Figure 1. APPLICATIONS Isolated RS-485/RS-422 interfaces Industrial field networks Multipoint data transmission systems GENERAL DESCRIPTION The ADM2582E/ADM2587E are fully integrated signal and The ADM2582E/ADM2587E driver has an active high enable. power isolated data transceivers with 15 kV ESD protection An active low receiver enable is also provided, which causes the and are suitable for high speed communication on multipoint receiver output to enter a high impedance state when disabled. transmission lines. The ADM2582E/ADM2587E include an The devices have current limiting and thermal shutdown integrated isolated dc-to-dc power supply, which eliminates the features to protect against output short circuits and situations need for an external dc-to-dc isolation block. where bus contention may cause excessive power dissipation. They are designed for balanced transmission lines and comply The parts are fully specified over the industrial temperature with ANSI/TIA/EIA-485-A-98 and ISO 8482:1987(E). range and are available in a highly integrated, 20-lead, wide-body SOIC package. The devices integrate Analog Devices, Inc., iCoupler technology to combine a 3-channel isolator, a three-state differential line driver, The ADM2582E/ADM2587E contain isoPower technology that a differential input receiver, and Analog Devices isoPower dc-to- uses high frequency switching elements to transfer power through dc converter into a single package. The devices are powered by a the transformer. Special care must be taken during printed circuit single 5 V or 3.3 V supply, realizing a fully integrated signal and board (PCB) layout to meet emissions standards. Refer to the power isolated RS-485 solution. AN-0971 Application Note, Control of Radiated Emissions with isoPower Devices, for details on board layout considerations. Rev. 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Technical Support www.analog.com 08111-001ADM2582E/ADM2587E Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Test Circuits ..................................................................................... 13 Applications ....................................................................................... 1 Switching Characteristics .............................................................. 14 Functional Block Diagram .............................................................. 1 Circuit Description......................................................................... 15 General Description ......................................................................... 1 Signal Isolation ........................................................................... 15 Revision History ............................................................................... 2 Power Isolation ........................................................................... 15 Specif icat ions ..................................................................................... 4 Truth Tables................................................................................. 15 ADM2582E Timing Specifications ............................................ 5 Thermal Shutdown .................................................................... 15 ADM2587E Timing Specifications ............................................ 5 Open- and Short-Circuit, Fail-Safe Receiver Inputs.............. 15 ADM2582E/ADM2587E Package Characteristics ................... 5 DC Correctness and Magnetic Field Immunity ........................... 15 ADM2582E/ADM2587E Regulatory Information .................. 6 Applications Information .............................................................. 17 ADM2582E/ADM2587E Insulation and Safety-Related PCB Layout and Electromagnetic Interference (EMI) .......... 17 Specifications ................................................................................ 6 Insulation Lifetime ..................................................................... 18 ADM2582E/ADM2587E VDE 0884 Insulation Isolated Power Supply Considerations .................................... 19 Characteristics .............................................................................. 6 Typical Applications ................................................................... 20 Absolute Maximum Ratings ............................................................ 7 Outline Dimensions ....................................................................... 22 ESD Caution .................................................................................. 7 Ordering Guide .......................................................................... 22 Pin Configuration and Function Descriptions ............................. 8 Typical Performance Characteristics ............................................. 9 REVISION HISTORY 5/2018Rev. F to Rev. G 6/2011Rev. B to Rev. C Changes to Table 10 .......................................................................... 8 Changes to Features Section and Figure 1 ..................................... 1 Deleted Electromagnetic Interference (EMI) Considerations Changes to Table 4 ............................................................................. 4 Section .............................................................................................. 16 Changes to Table 5 ............................................................................. 5 Changes to PCB Layout and Electromagnetic Interference Deleted Table 6 Renumbered Sequentially ................................... 5 (EMI) Section .................................................................................. 17 Added Thermal Resistance Parameter, Table 8 ....................... 6 JA Changes to Figure 35 ...................................................................... 18 Changes to Table 9 ............................................................................. 6 Changes to PCB Layout Reference ............................................... 19 Changes to Table 10 .......................................................................... 7 Changes to Ordering Guide .......................................................... 22 Changes to Table 13 ....................................................................... 14 Moved DC Correctness and Magnetic Field Immunity 9/2016Rev. E to Rev. F S ection .............................................................................................. 14 Changes to Ordering Guide .......................................................... 20 Changes to PCB Layout Section and Figure 35 .......................... 16 Changes to Figure 39 ...................................................................... 17 10/2014Rev. D to Rev. E Changes to Typical Applications Section and Figure 40 ........... 18 Changes to Table 12 ........................................................................ 14 9/2014Rev. C to Rev. D Changes to Figure 9 .......................................................................... 9 Rev. G Page 2 of 22