ST4E1240

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High-speed 3.3 V / 5 V RS485 transceiver with ± 12 kV IEC 61000-4-2 contact ESD protection

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Product overview

Description

The ST4E1216 and ST4E1240 are low-power differential line transceivers for data transmission standard RS485 applications in half-duplex mode, compatible with either 3.3 V or 5 V rail power supplies, fully operating from 3 V to 5.5 V.

The ST4E1216 and the ST4E1240 operate respectively up to 16 Mbps and 40 Mbps. They are ideal for multipoint applications over extended cable runs. They are robust to ESD transients. In particular, the bus pins support ±12 kV IEC 61000-4-2 contact discharge. They also feature robust hot-swap capability during switching on and off, or during hot insertion.

The ST4E1216 and ST4E1240 are available in the standard SO-8 package and operate respectively with a -40 °C to 125 °C and -40 °C to 85 °C temperature range.

  • All features

    • Meets or exceeds TIA/EIA-485A standard requirements
    • 3 V to 5.5 V supply voltage
    • Differential output voltage (VOD) exceeds 2.1 V at 5 V supply for PROFIBUS compatibility
    • High speed: up to 40 Mbps data rate
    • More than 64 transceivers on the bus (up to 100 nodes)
    • Integrated protections
      • Fail-safe receiver (bus open, idle, and shorted)
      • Thermal shutdown protection
      • Hot-swap capability (with parasitic capacitance up to 100 pF)
      • Bus I/O ESD protection±12 kV IEC61000-4-2 contact discharge≥ ±8 kV HBM ESD±4 kV IEC61000-4-4 class-A fast transient burst (EFT)
    • Low quiescent current in shutdown mode
    • Available in industry standard SO-8

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STMicroelectronics - ST4E1240

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
ST4E1240DT
Active
SO-8 Industrial Ecopack3

ST4E1240DT

Package:

SO-8

Material Declaration**:

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SO-8

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Ecopack3

(**) 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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