3.3 V powered, 15 kV ESD protected, up to 20 Mbps RS-485/RS-422 transceiver, [-40oC, 105oC] temperature range

The ST4485EB device is a ± 15 kV ESD protected, 3.3 V low power transceiver for RS-485 and RS-422 communications. The device contains one driver and one receiver in half duplex configuration.

The ST4485EB transmits and receives at a guaranteed data rate of at least 20 Mbps.

All transmitter outputs and receiver inputs are protected to ± 15 kV using “Human Body Model”.

The driver is short-circuit current limited and is protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high-impedance state.

Key Features

  • ESD protection
    • ± 15 kV human body model
    • ± 8 kV IEC 1000-4-2 contact discharge
  • Operate from a single 3.3 V supply - no charge pump required
  • Interoperable with 5 V logic
  • 1 μA low current shutdown mode max.
  • Guaranteed 20 Mbps data rate
  • -7 to 12 V common mode input voltage range
  • Half duplex versions available
  • Industry standard 75176 pinout
  • Current limiting and thermal shutdown for driver overload protection
  • Guaranteed high receiver output state for floating inputs with no signal present
  • Allow up to 64 transceivers on the bus
  • Wide operating temperature range: -40 to +105 °C



Description バージョン サイズ
DS9898 DS9898: 3.3 V powered, 15 kV ESD protected, up to 20 Mbps RS-485/RS-422 transceiver 3.0 309 KB
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

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
ST4485EBDR SO-8 Tape And Reel -40 105 - Active 1.51 1000 NEC EAR99 CHINA MORE INFO サンプル入手 買い物かごに追加 DISTRIBUTOR AVAILABILITY

(*) 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**
ST4485EBDR アクティブSO-8IndustrialEcopack3 0 0

(**) 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.