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ADM489A:  5 V, Slew-Rate Limited, Low Power, 250 kbps, Full Duplex EIA RS-485 Transceiver (with DE/RE)

产品详情

The ADM488A and ADM489A are low power, differential line transceivers suitable for communication on multipoint bus transmission lines. They are intended for balanced data transmission and comply with both RS-485 and RS-422 standards of the Electronics Industries Association (EIA). Both products contain a single differential line driver and a single differential line receiver, making them suitable for full-duplex data transfer. The ADM489A contains an additional receiver and driver enable control.

The input impedance is 12 kΩ, allowing 32 transceivers to be connected on the bus. The ADM488A/ADM489A operate from a single 5 V ± 10% power supply.

Excessive power dissipation that is caused by bus contention or 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 ADM488A/ADM489A are fabricated on BiCMOS, an advanced mixed technology process combining low power CMOS with fast switching bipolar technology.

The ADM488A/ADM489A are fully specified over the industrial temperature range and are available in SOIC and MSOP packages.

Applications
  • Low power RS-485 and RS-422 systems
  • DTE-DCE interface
  • Packet switching
  • Local area networks
  • Data concentration
  • Data multiplexers
  • Integrated services digital network (ISDN)

特点和优势

  • Complies with ANSI TIA/EIA-485-A-1998 and ISO 8482: 1987(E)
  • 250 kbps data rate
  • Single 5 V ± 10% supply
  • −7 V to +12 V bus common-mode range
  • Connect up to 32 nodes on the bus
  • Reduced slew rate for low EM interference
  • Short-circuit protection
  • 30 μA supply current

Functional Block Diagram


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可用系统电压 V 工作电压轨 V 负载电流 A

文档

快讯名称 内容类型 文件类型
ADM488A/ADM489A: Full-Duplex, Low Power,Slew Rate Limited, EIA RS-485 Transceivers Data Sheet (Rev B, 06/2014) (pdf, 281 kB) 产品数据手册 PDF
AN-1176:二进制.Bxl文件格式的元件尺寸和符号  (pdf, 671 kB) 应用笔记 PDF
AN-1176: Component Footprints and Symbols in the Binary .Bxl File Format  (pdf, 671 kB) 应用笔记 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.
在线研讨会 WEBCAST
Industrial Automation Solutions  (pdf, 6110 kB) 概况 PDF
Emerging Energy Applications Solutions Bulletin, Volume 10, Issue 4  (pdf, 1496 kB) 解决方案通报 PDF
Test & Instrumentation Solutions Bulletin, Volume 10, Issue 3  (pdf, 1334 kB) 解决方案通报 PDF
RAQs index 非常见问题解答 HTML
术语表 专业词汇表 HTML

评估套件,原理图符号和PCB封装

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Sample样片申请及购买

价格,封装及供货状态

ADM489A 型号选项
产品型号 封装 引脚 温度范围 包装和数量 报价*(100-499) 报价*1000 pcs RoHS 查看PCN/PDN 查看库存/
购买/样片
ADM489ABRMZ 产品状态: 量产 10 ld MSOP 10 工业 Tube, 50 $ 1.29 $ 1.10 Y  材料信息 查看PCN 订购 样片
ADM489ABRMZ-REEL7 产品状态: 量产 10 ld MSOP 10 工业 Reel, 1000 - $ 1.10 Y  材料信息 查看PCN 订购
ADM489ABRZ 产品状态: 量产 14 ld SOIC 14 工业 Tube, 56 $ 1.24 $ 1.05 Y  材料信息 查看PCN 订购 样片
ADM489ABRZ-REEL7 产品状态: 量产 14 ld SOIC 14 工业 Reel, 1000 - $ 1.05 Y  材料信息 查看PCN 订购
帮助

这里所列出的美国报价单仅供预算参考,指美元报价(规定订量的每片美元,美国离岸价),如有修改不再另行通知。由于地区关税、商业税、汇率及手续费原因,国际报价可能不同。对于特殊批量报价,请与您当地的ADI公司办事处或代理商联络。对于评估板和套件的报价是指一个单位价格。

EZLINX™ ICOUPLER®隔离式接口开发环境
产品型号 描述 报价 RoHS 查看PCN/PDN 查看库存/
购买/样片
EZLINX-IIIDE-EBZ 产品状态: 量产 iCoupler® Isolated Interface Development Environment Evaluation Board $ 149.00 -
标准RS-485全双工(14引脚SOIC封装)评估板EVAL-RS485FDEBZ
产品型号 描述 报价 RoHS 查看PCN/PDN 查看库存/
购买/样片
EVAL-RS485FDEBZ 产品状态: 量产 Evaluation Board $ 30.00 -
ADM1491EBRZ 产品状态: 量产 5V, Enhanced ESD, 16 Mbps, 32 nodes, -40C to +85C $ 2.44 -
ADM3070EARZ 产品状态: 量产 3.3V, Enhanced ESD, 250 kbps, 256 nodes, -40C to +85C $ 1.96 -
ADM3070EYRZ 产品状态: 量产 3.3V, Enhanced ESD, 250 kbps, 256 nodes, -40C to +125C $ 2.15 -
ADM3073EARZ 产品状态: 量产 3.3V, Enhanced ESD, 500 kbps, 256 nodes, -40C to +85C $ 1.96 -
ADM3073EYRZ 产品状态: 最后订购时间 3.3V, Enhanced ESD, 500 kbps, 256 nodes, -40C to +125C $ 2.15 -
ADM3076EARZ 产品状态: 量产 3.3V, Enhanced ESD, 16 Mbps, 256 nodes, -40C to +85C $ 1.96 -
ADM3076EYRZ 产品状态: 量产 3.3V, Enhanced ESD, 16 Mbps, 256 nodes, -40C to +125C $ 2.15 -
ADM3491AR 产品状态: 量产 3.3V, 10 Mbps, 32 nodes, -40C to +85C, Not ROHS Compliant $ 4.27 -
ADM3491ARZ 产品状态: 量产 3.3V, 10 Mbps, 32 nodes, -40C to +85C $ 3.69 -
ADM3491EARZ 产品状态: 量产 3.3V, Enhanced ESD, 12 Mbps, 32 nodes, -40C to +85C $ 1.71 -
ADM489ABRZ 产品状态: 量产 5V, 250 kbps, 32 nodes, -40 to +85C $ 2.22 -

所示报价为单片价格。所列的美国报价单仅供预算参考,指美元报价(每片美国离岸价),如有修改,恕不另行通知。由于地区关税、商业税、汇率及手续费原因,国际报价可能不同。

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