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ADM2486BRWZ-REEL

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21
High Speed, Half-Duplex
i
Coupler
Isolated RS-485 Transceiver
Data Sheet
ADM2486
Rev. E Document Feedback
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responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
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Tel: 781.329.4700 ©2004–2013 Analog Devices, Inc. All rights reserved.
Technical Support www.analog.com
FEATURES
Half-duplex, isolated RS-485 transceiver
PROFIBUS® compliant
ANSI EIA/TIA 485-A and ISO 8482: 1987(E) compliant
20 Mbps data rate
5 V or 3 V operation (V
DD1
)
High common-mode transient immunity: >25 kV/μs
Isolated DE status output
Receiver open-circuit, fail-safe design
Thermal shutdown protection
50 nodes on bus
Safety and regulatory approvals
UL recognition—2500 V
rms
for 1 minute per UL 1577
CSA Component Acceptance Notice #5A
IEC 609501 800 V
rms
(basic), 400 V
rms
(reinforced)
VDE Certificate of Conformity
DIN V VDE 0884-10 (VDE V 0884-10): 2006-12
V
IORM
= 560 V peak
Operating temperature range: −40°C to +85°C
Wide body, 16-lead SOIC package
APPLICATIONS
Isolated RS-485/RS-422 interfaces
PROFIBUS networks
Industrial field networks
Multipoint data transmission systems
GENERAL DESCRIPTION
The ADM2486 differential bus transceiver is an integrated,
galvanically isolated component designed for bidirectional
data communication on multipoint bus transmission lines. It
is designed for balanced transmission lines and complies with
ANSI EIA/TIA-485-A and ISO 8482: 1987(E).
The device employs Analog Devices iCoupler® technology to
combine a 3-channel isolator, a three-state differential line
driver, and a differential input receiver into a single package.
The logic side of the device is powered with either a 5 V or a
3 V supply, and the bus side uses an isolated 5 V supply.
FUNCTIONAL BLOCK DIAGRAM
RTS
V
DD1
DE
GND
1
A
B
V
DD2
GND
2
GALVANIC ISOLATION
LOGIC SIDE
TxD
RxD
BUS SIDE
04604-001
RE
PV
ADM2486
Figure 1.
The ADM2486 driver has an active-high enable feature. The
driver differential outputs and the receiver differential inputs
are connected internally to form a differential input/output port
that imposes minimal loading on the bus when the driver is
disabled or when VDD1 or VDD2 = 0 V. Also provided is an
active-high receiver disable feature that causes the receive
output to enter a high impedance state.
The device has current-limiting and thermal shutdown features
to protect against output short circuits and situations where bus
contention may cause excessive power dissipation. The part is
fully specified over the industrial temperature range and is
available in a 16-lead, wide body SOIC package.
ADM2486* PRODUCT PAGE QUICK LINKS
Last Content Update: 02/23/2017
COMPARABLE PARTS
View a parametric search of comparable parts.
EVALUATION KITS
• AD-FMCMOTCON2-EBZ Evaluation Board
• ADM2486 Evaluation Board
DOCUMENTATION
Application Notes
• AN-0971: Recommendations for Control of Radiated
Emissions with isoPower Devices
• AN-1176: Component Footprints and Symbols in the
Binary .Bxl File Format
• AN-1179: Junction Temperature Calculation for Analog
Devices RS-485/RS-422, CAN, and LVDS/M-LVDS
Transceivers
• AN-727: iCoupler® Isolation in RS-485 Applications
• AN-740: iCoupler® Isolation in RS-232 Applications
• AN-793: ESD/Latch-Up Considerations with iCoupler®
Isolation Products
• AN-825: Power Supply Considerations in iCoupler®
Isolation Products
• AN-960: RS-485/RS-422 Circuit Implementation Guide
Data Sheet
• ADM2486: High Speed, Half-Duplex
i
Coupler® Isolated
RS-485 Transceiver Data Sheet
User Guides
• UG-240: Evaluation Board for the ADM2486 High Speed,
Half-Duplex
i
Coupler Isolated RS-485 Transceiver
SOFTWARE AND SYSTEMS REQUIREMENTS
• ADI RS-485/RS-422 Cross Reference Guide
• RS-232 Transceivers Cross Reference Guide
REFERENCE MATERIALS
Press
• Analog Devices Achieves Major Milestone by Shipping 1
Billionth Channel of iCoupler Digital Isolation
Product Selection Guide
• Digital Isolator Product Selection and Resource Guide
Solutions Bulletins & Brochures
• Emerging Energy Applications Solutions Bulletin, Volume
10, Issue 4
• Test & Instrumentation Solutions Bulletin, Volume 10,
Issue 3
Technical Articles
• Inside iCoupler® Technology:ADuM347x PWM Controller
and Transformer Driver with Quad-Channel Isolators
Design Summary
• MS-2127: Designing with
i
Coupler Digital Isolators in Solar
PV Inverters
• MS-2155: Options and Solutions for Partitioning Isolated
Power in Isolated RS-485 Nodes
• N
App
kin Note: Lowering the Power of the ADuM524x
DESIGN RESOURCES
• ADM2486 Material Declaration
• PCN-PDN Information
• Quality And Reliability
• Symbols and Footprints
DISCUSSIONS
View all ADM2486 EngineerZone Discussions.
SAMPLE AND BUY
Visit the product page to see pricing options.
TECHNICAL SUPPORT
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number.
DOCUMENT FEEDBACK
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ADM2486 Data Sheet
Rev. E | Page 2 of 20
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Timing Specifications ....................................................................... 5
ADM2486 Characteristics ............................................................... 6
Package Characteristics ............................................................... 6
Regulatory Information ............................................................... 6
Insulation and Safety-Related Specifications ............................ 6
VDE 0884-10 Insulation Characteristics ................................... 7
Absolute Maximum Ratings ............................................................ 8
ESD Caution .................................................................................. 8
Pin Configuration and Function Descriptions ............................. 9
Test Circuits ..................................................................................... 10
Switching Characteristics .............................................................. 11
Typical Performance Characteristics ........................................... 12
Circuit Description......................................................................... 14
Electrical Isolation ...................................................................... 14
Tr ut h Tables................................................................................. 14
Power-Up/Power-Down Thresholds ....................................... 14
Thermal Shutdown .................................................................... 15
Receiver Fail-Safe Inputs ........................................................... 15
Magnetic Field Immunity .......................................................... 15
Applications Information .............................................................. 16
PC Board Layout ........................................................................ 16
Power _Val id Input ..................................................................... 16
Isolated Power Supply Circuit .................................................. 17
Outline Dimensions ....................................................................... 18
Ordering Guide .......................................................................... 18
REVISION HISTORY
11/13—Rev. D to Rev. E
Changes to Features Section............................................................ 1
Changes to Table 4 ............................................................................ 6
Changes to VDE 0884-10 Insulation Characteristics Section
and Table 6 ......................................................................................... 7
Updated Outline Dimensions ....................................................... 18
Changes to Ordering Guide .......................................................... 18
2/06—Rev. C to Re v. D
Updated Format .................................................................. Universal
Changes to Table 1 ............................................................................ 3
Changes to Table 8 ............................................................................ 9
Changes to Figure 22 and Figure 23 ............................................. 13
Changes to Table 9 and Table 10 ................................................... 14
Added PC Board Layout Section ................................................. 16
Changes to Isolated Power Supply Circuit Section and
Figure 32 .......................................................................................... 17
3/05—Rev. B to Re v. C
Change to Package Characteristics ................................................. 7
Changes to Figure 12, Figure 14, and Figure 15 ......................... 11
Change to Power_Valid Input Section ......................................... 16
1/05—Rev. A to Rev. B
Added PROFIBUS logo .................................................................... 1
11/04—Rev. 0 to Rev. A
Changes to Figure 1 ........................................................................... 1
Changes to Figure 6 ........................................................................ 10
Added Figure 22 through Figure 25 ............................................. 13
Updated Outline Dimensions ....................................................... 18
Changes to Ordering Guide .......................................................... 18
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21

ADM2486BRWZ-REEL

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Manufacturer:
Analog Devices Inc.
Description:
Digital Isolators Isolated HighSpeed RS-485 Transciever IC
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