ST485ERB   Product is in volume production.

15 kV ESD protected, low power RS-485/RS-422 transceiver, [-40oC, 85oC] temperature range

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The ST485ERB is a low-power transceiver for RS-485 and RS-422 communication. Each driver output and receiver input is protected against ±15 kV electrostatic discharge (HBM) ± 8 kV (IEC-1000-4-2 contact discharge) shocks, without latch-up. These parts contain one driver and one receiver.

This transceiver draws 300 µA (typ.) of supply current when unloaded or fully loaded with disabled drivers.

It operates from a single 5 V supply.

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

The ST485ERB is designed for bi-directional data communication on multipoint bus transmission lines (half-duplex applications).

Key Features

  • Low quiescent current: 300 µA
  • Designed for RS-485 interface applications
  • - 7 V to 12 V common mode input voltage range
  • Driver maintains high impedance in 3-state or with the power OFF
  • 70 mV typical input hysteresis
  • 30 ns propagation delay, 5 ns skew
  • Operates from a single 5 V supply
  • Current limiting and thermal shutdown for driver overload protection
  • ESD protection:
    • ± 15 kV (HBM)
    • ± 8 kV (IEC-1000-4-2 contact discharge)
  • Allows up to 64 transceivers on the bus

Resources

Technical Documentation

Product Specifications
Description Version Size
DS3023 DS3023: ± 15 kV ESD protected, low-power RS-485/RS-422 transceiver 8.0 675.17 KB
Application Notes
Description Version Size
AN1348 AN1348: ST485: an RS-485 based interface with lower data bit errors 3.2 112.81 KB

Publications and Collaterals

Brochures
Description Version Size
Products and solutions for Smart industry 3.0 2.99 MB
Support & Community

Sample & Buy

Part Number Package Packing Type Operating Temperature (°C) (min) Operating Temperature (°C) (max) Autoshutdown Marketing Status Unit Price (US$) * Quantity ECCN (US) Country of Origin More info Order from ST Order from Distributors
ST485ERBDR SO-8 Tape And Reel -40 85 - Active 0.82 1000 EAR99 CHINA MORE INFO Buy Direct Add to cart 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

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
ST485ERBDR ActiveSO-8IndustrialEcopack3 0 0
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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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