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ADM488:  5 V, Slew-Rate Limited, Low Power, 250 kbps, Full Duplex EIA RS-485 Transceiver

Product Details


The ADM488 and ADM489 are low power differential line transceiver suitable for communication on multipoint bus transmission lines.

They are intended for balanced data transmission and comply with both EIA Standards RS-485 and RS-422. Both products contains a single differential line driver and a single differential line receiver making them suitable for full duplex data transfer.

The ADM489 contains an additional receiver and driver enable control.

The input impedance is 12 kohms, allowing 32 transceivers to be connected on the bus.

The ADM488/ADM489 operates from a single +5 V ± 10% power supply. Excessive power dissipation caused by bus contention or by output shorting is prevented by a thermal shutdown circuit. This feature forces the driver output into a high impedance state if during fault conditions a significant temperature increase is detected in the internal driver circuitry.

The receiver contains a fail-safe feature that results in a logic high output state if the inputs are unconnected (floating). The ADM488/ADM489 is fabricated on BiCMOS, an advanced mixed technology process combining low power CMOS with fast switching bipolar technology.

The ADM488/ADM489 is fully specified over the industrial temperature range and is available in DIP, SOIC and TSSOP packages.

FEATURES and BENEFITS

  • Meets EIA RS-485 Standard
  • 250 kbps Data Rate
  • Single 5 V ± 10% Supply
  • –7 V to +12 V Bus Common-Mode Range
  • 12 kO Input Impedance
  • 2 kV EFT Protection Meets IEC1000-4-4
  • High EM Immunity Meets IEC1000-4-3
  • Reduced Slew Rate for Low EM Interference
  • Short Circuit Protection
  • Excellent Noise Immunity
  • 30 µA Supply Current

Functional Block Diagram for ADM488

Enter values and click on PowerMe to find power solutions for this IC. PowerMe launch of ADIsimPower Voltage Regulator Design Tool
(Nominal) For IC being powered
Available System Voltage V Operating Voltage Rail V Load Current A

Documentation

Title Content Type File Type
ADM488/ADM489: Full-Duplex, Low Power, Slew Rate Limited, EIA RS-485 Transceivers Data Sheet  (Rev D, 04/2006) (pdf, 379 kB) Data Sheets PDF
AN-1176: Component Footprints and Symbols in the Binary .Bxl File Format  (pdf, 671 kB) Application Notes PDF
AN-960: RS-485/RS-422 Circuit Implementation Guide  (pdf, 245 kB) Application Notes PDF
Solving Isolation Challenges in Industrial Automation
This webcast will discuss the role isolation plays in providing protection and reducing the system bit-error-rate, using the specific design challenges of an RS-485 network. Topics to be covered in this presentation will include: Why and when one should isolate, Types of isolation and their advantages, Design Considerations for an RS-485 node (and how this translates to design considerations for signal isolation) as well as many other topics.
Webcasts WEBCAST
EMC, CE Mark, IEC801... What's it all about?
... New devices to ease the job.
(Analog Dialogue, Vol. 30, No. 4)
Analog Dialogue HTML
Interface Parametric Search Product Selection Guide HTML
Brochure: Motor and Power Control Solutions  (pdf) Overview PDF
Industrial Automation Solutions  (pdf, 6110 kB) Overview PDF
Emerging Energy Applications Solutions Bulletin, Volume 10, Issue 4  (pdf, 1496 kB) Solutions Bulletins PDF
Test & Instrumentation Solutions Bulletin, Volume 10, Issue 3  (pdf, 1334 kB) Solutions Bulletins PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

SampleSample & Buy

Price, packaging, availability

ADM488 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADM488AN Status: Obsolete 8 ld PDIP 8 Ind Tube, 50 - N  Material Info PCN/PDN Contact ADI
ADM488ANZ Status: Production 8 ld PDIP 8 Ind Tube, 50 - Y  Material Info PCN Purchase
ADM488AR Status: Obsolete 8 ld SOIC 8 Ind Tube, 98 - N  Material Info PDN Contact ADI
ADM488AR-REEL7 Status: Obsolete SOIC 150 MIL 8 Comm. Reel, 1000 - N  Material Info PDN Contact ADI
ADM488ARZ Status: Production 8 ld SOIC 8 Ind Tube, 98 - Y  Material Info Notify Me Purchase
ADM488ARZ-REEL Status: Production 8 ld SOIC 8 Ind Reel, 2500 - Y  Material Info Notify Me Purchase
ADM488ARZ-REEL7 Status: Production SOIC 150 MIL 8 Comm. Reel, 1000 - Y  Material Info Notify Me Purchase
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

Standard RS-485 Full-Duplex (8-lead SOIC) Evaluation Board, EVAL-RS485FD8EBZ
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-RS485FD8EBZ Status: Production Evaluation Board $30.00 Yes -
ADM3071EARZ Status: Production 3.3V, Enhanced ESD, 250 kbps, 256 nodes, -40C to +85C $1.90 Yes -
ADM3071EYRZ Status: Last Time Buy 3.3V, Enhanced ESD, 250 kbps, 256 nodes, -40C to +125C $2.08 Yes -
ADM1490EBRZ Status: Production 5V, Enhanced ESD, 16 Mbps, 32 nodes, -40C to +85C $2.44 Yes -
ADM3074EARZ Status: Production 3.3V, Enhanced ESD, 500 kbps, 256 nodes, -40C to +85C $1.90 Yes -
ADM3074EYRZ Status: Production 3.3V, Enhanced ESD, 500 kbps, 256 nodes, -40C to +125C $2.08 Yes -
ADM3077EARZ Status: Production 3.3V, Enhanced ESD, 16 Mbps, 256 nodes, -40C to +85C $1.90 Yes -
ADM3077EYRZ Status: Production 3.3V, Enhanced ESD, 16 Mbps, 256 nodes, -40C to +125C $2.08 Yes -
ADM3488ARZ Status: Production 3.3V, 250 kbps, 32 nodes, -40C to +85C $1.21 Yes -
ADM3488EARZ Status: Production 3.3V, Enhanced ESD, 250 kbps, 32 nodes, -40C to +85C $1.59 Yes -
ADM3490ARZ Status: Production 3.3V, 10 Mbps, 32 nodes, -40C to +85C $1.42 Yes -
ADM3490EARZ Status: Production 3.3V, Enhanced ESD, 12 Mbps, 32 nodes, -40C to +85C $1.65 Yes -
ADM4854ARZ Status: Production 5V, 115 kbps, 256 nodes, -40 to +85C $0.91 Yes -
ADM4855ARZ Status: Production 5V, 500 kbps, 256 nodes, -40 to +85C $0.91 Yes -
ADM4856ARZ Status: Production 5V, 2.5 Mbps, 256 nodes, -40 to +85C $0.91 Yes -
ADM4857ARZ Status: Production 5V, 10 Mbps, 256 nodes, -40 to +85C $0.91 Yes -
ADM488ABRZ Status: Production 5V, 250 kbps, 32 nodes, -40 to +85C $1.91 Yes -

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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