Low power full duplex high speed RS-485/RS-422 transceiver, [-40oC, 85oC] temperature range

The ST490A is a low power transceiver for RS485 and RS-422 communications. The device contains one driver and one receiver in full duplex configuration. The ST490A draws 5mA (typ.) of supply current when unloaded or fully loaded with disabled drivers. It operates from a single 5V supply.

Driver is short-circuit current limited and is protected against excessive power dissipation by thermal shutdown circuitry that place the driver outputs into a high-impedance state. The receiver input has a fail-safe feature that guarantees a logic high output if both inputs are open circuit.

Key Features

  • Current limiting and thermal shutdown for driver overload protection
  • ±4 kV ESD protection
  • Low supply current: 5mA max
  • 70mV typical input hysteresis
  • -7V to 12V common mode input voltage range
  • Operate from a single 5 V supply
  • Designed for 25Mbps operation

リソース

技術文書

製品スペック
Description バージョン サイズ
DS2962 DS2962: Low power high speed RS-485/RS-422 transceiver 5.2 686 KB
アプリケーションノート
Description バージョン サイズ
AN1348 AN1348: ST485: an RS-485 based interface with lower data bit errors 3.2 112 KB

Publications and Collaterals

パンフレット
Description バージョン サイズ
Products and solutions for Smart industry 2.0 5 MB
サポート & コミュニティ

サンプル & 購入

製品型番 パッケージ Packing Type Operating Temperature (°C) (min) Operating Temperature (°C) (max) Autoshutdown Marketing Status Unit Price (US$) * 数量 ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
ST490ABDR SO-8 Tape And Reel -40 85 - Active 1.01 1000 NEC EAR99 CHINA MORE INFO DISTRIBUTOR AVAILABILITY
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(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

品質 & 信頼性

製品型番 Marketing Status パッケージ Grade RoHS Compliance Grade Material Declaration**
ST490ABDR アクティブSO-8IndustrialEcopack3
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(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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