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MAX3485AEASA+ - Analog Devices

Description: Maxim MAX3485AEASA+, Line Transceiver, 1993/ RS-485, EIA RS-422 1 (RS-485/RS-422)-TX 1 (RS-485/RS-422)-RX, 3.3 V, 8-Pin

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MAX3485AEASA+ - Analog Devices - PCB symbol
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MAX3485AEASA+ - Analog Devices PCB footprint - Small Outline Packages - Small Outline Packages - 8 SO-3
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MAX3485AEASA+ - Analog Devices - 3D model - Small Outline Packages - 8 SO-3
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MAX3485AEASA+ Details

  • Manufacturer Part Number:

    MAX3485AEASA+

  • Brand Name:

    Analog Devices Inc

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    8-SOIC_N-150_MIL

  • Package Description:

    SOP-8

  • Pin Count:

    8

  • Manufacturer Package Code:

    8-SOIC_N-150_MIL

  • Country Of Origin:

    Japan, Mainland China, Malaysia, Philippines, Singapore, South Korea, Taiwan, Thailand, USA

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Date Of Intro:

    2016-09-19

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    9

  • Differential Output:

    YES

  • Driver Number of Bits:

    1

  • High Level Input Current-Max:

    0.000002 A

  • Input Characteristics:

    DIFFERENTIAL SCHMITT TRIGGER

  • Interface IC Type:

    LINE TRANSCEIVER

  • Interface Standard:

    EIA-422; TIA-422; EIA-485; TIA-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

  • Out Swing-Min:

    1.5 V

  • Output Low Current-Max:

    0.002 A

  • 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:

    35 ns

  • Receiver Number of Bits:

    1

  • Seated Height-Max:

    1.75 mm

  • Supply Current-Max:

    4 mA

  • Supply Voltage-Max:

    3.6 V

  • Supply Voltage-Min:

    3 V

  • Supply Voltage-Nom:

    3.3 V

  • Surface Mount:

    YES

  • Technology:

    BICMOS

  • 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

MAX3485AEASA+ Frequently Asked Questions (FAQs)

  • A good layout and routing practice for the MAX3485AEASA+ involves keeping the analog and digital grounds separate, using a solid ground plane, and minimizing the length of the traces between the device and the capacitors. Additionally, it's recommended to use a shielded cable for the RS-485 bus and to keep the bus away from noisy signals.
  • To ensure reliable communication in a noisy industrial environment, use a shielded cable, twisted pair wiring, and implement error-checking mechanisms such as CRC or checksum in the protocol. Additionally, consider using a common-mode choke or a ferrite bead to filter out high-frequency noise.
  • The maximum cable length supported by the MAX3485AEASA+ depends on the baud rate, cable characteristics, and noise environment. As a general guideline, the maximum cable length is around 4000 feet (1219 meters) at 115.2 kbps, but it's recommended to consult the datasheet and perform tests to determine the maximum cable length for a specific application.
  • The MAX3485AEASA+ can be configured for half-duplex or full-duplex operation by controlling the DE (driver enable) and RE (receiver enable) pins. For half-duplex operation, tie DE to RE, and for full-duplex operation, use separate control signals for DE and RE.
  • The recommended termination scheme for the RS-485 bus using the MAX3485AEASA+ is to use a 120-ohm termination resistor at each end of the bus, and to ensure that the total bus capacitance is less than 400 pF.

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MAX3485AEASA+ Overview

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About Analog Devices

Analog Devices Inc. is a global leader in the design and manufacturing of analog, mixed-signal, and digital signal processing integrated circuits and software solutions for the industrial, automotive, healthcare, communications industries. Analog Devices serves a diverse range of markets including industrial, automotive, healthcare, energy, aerospace, defense, and consumer electronics industries. Analog Devices’ product portfolio includes a wide range of ICs, modules, and subsystems.

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