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ST3485EIDT - STMicroelectronics

Description: RS-422/RS-485 Interface IC 3.3 V powered, 15 kV ESD protected, up to 12 Mbps RS-485/RS-422 transceiver

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ST3485EIDT - STMicroelectronics PCB footprint - Small Outline Packages - Small Outline Packages - SO8 package outline
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ST3485EIDT Details

  • Manufacturer Part Number:

    ST3485EIDT

  • Brand Name:

    STMicroelectronics

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    SOP-8

  • Country Of Origin:

    Morocco

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Factory Lead Time:

    12 Weeks

  • Manufacturer:

    STMicroelectronics

  • YTEOL:

    7.2

  • Differential Output:

    YES

  • Driver Number of Bits:

    1

  • Input Characteristics:

    DIFFERENTIAL SCHMITT TRIGGER

  • Interface IC Type:

    LINE TRANSCEIVER

  • Interface Standard:

    EIA-422; EIA-485

  • JESD-30 Code:

    R-PDSO-G8

  • JESD-609 Code:

    e3

  • Length:

    4.9 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    8

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Characteristics:

    DIFFERENTIAL

  • Output Polarity:

    COMPLEMENTARY

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP8,.25

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Peak Reflow Temperature (Cel):

    260

  • Receive Delay-Max:

    50 ns

  • Receiver Number of Bits:

    1

  • Seated Height-Max:

    1.75 mm

  • Supply Current-Max:

    2.2 mA

  • Supply Voltage-Max:

    3.6 V

  • Supply Voltage-Min:

    3 V

  • Supply Voltage-Nom:

    3.3 V

  • Surface Mount:

    YES

  • Temperature Grade:

    AUTOMOTIVE

  • Terminal Finish:

    Matte Tin (Sn) - annealed

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

  • Time@Peak Reflow Temperature-Max (s):

    30

  • Transmit Delay-Max:

    30 ns

  • Width:

    3.9 mm

ST3485EIDT Frequently Asked Questions (FAQs)

  • A good PCB layout for the ST3485EIDT involves keeping the input and output traces short and symmetrical, using a solid ground plane, and placing decoupling capacitors close to the device. A 4-layer PCB with a dedicated power plane and a solid ground plane is recommended.
  • The ST3485EIDT requires a stable power supply with minimal noise and ripple. Use a high-quality voltage regulator and decouple the device with 10uF and 100nF capacitors in parallel, placed close to the device. Ensure the power supply can provide the required current.
  • The ST3485EIDT supports data transfer rates up to 100 Mbps, but the actual rate depends on the system design, cable quality, and transmission distance.
  • To minimize EMI and RFI, use a shielded cable, keep the cable length short, and use a common-mode choke or ferrite bead on the cable. Ensure the PCB layout is optimized for EMI reduction, and use a metal enclosure or shielding if necessary.
  • The ST3485EIDT has a maximum junction temperature of 150°C. Ensure good airflow, use a heat sink if necessary, and avoid blocking airflow around the device. Monitor the device temperature and adjust the system design accordingly.

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About STMicroelectronics

STMicroelectronics (ST) is a global semiconductor company that designs, manufactures, and markets a broad range of integrated circuits (ICs), discrete devices, and other electronic components. STMicroelectronics offers a diverse portfolio of semiconductor products covering a wide range of applications and industries. Their product categories include microcontrollers, analog and mixed-signal ICs, MEMS (Micro-Electro-Mechanical Systems) sensors, power management ICs, RF (Radio Frequency) transceivers, aut

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