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MAX3491ESD+T - Analog Devices

Description: RS-422/RS-485 Interface IC 3.3V Powered, 10Mbps and Slew-Rate Limited, True RS-485/RS-422 Transceivers

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MAX3491ESD+T - Analog Devices - PCB symbol
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MAX3491ESD+T - Analog Devices PCB footprint - Small Outline Packages - Small Outline Packages - 14 Narrow SO-
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MAX3491ESD+T - Analog Devices - 3D model - Small Outline Packages - 14 Narrow SO-
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MAX3491ESD+T Details

  • Manufacturer Part Number:

    MAX3491ESD+T

  • Brand Name:

    Analog Devices Inc

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    14-SOIC_N-150_MIL

  • Package Description:

    SO-14

  • Pin Count:

    14

  • Manufacturer Package Code:

    14-SOIC_N-150_MIL

  • Reach Compliance Code:

    Compliant

  • 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:

    1994-12-01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    9

  • Additional Feature:

    1 RECEIVER ACTIVE UNDER SHUTDOWN; TRISTATABLE RECEIVER

  • 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; EIA-485

  • JESD-30 Code:

    R-PDSO-G14

  • JESD-609 Code:

    e3

  • Length:

    8.65 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    14

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Out Swing-Min:

    1.5 V

  • Output Characteristics:

    3-STATE

  • Output Low Current-Max:

    0.0025 A

  • Output Polarity:

    COMPLEMENTARY

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP14,.25

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Receive Delay-Max:

    90 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:

    INDUSTRIAL

  • 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:

    35 ns

  • Width:

    3.9 mm

MAX3491ESD+T Frequently Asked Questions (FAQs)

  • A good PCB layout for the MAX3491ESD+T involves keeping the analog and digital grounds separate, using a solid ground plane, and placing the device close to the signal sources. Additionally, using a shielded cable for the RS-485 bus and keeping the bus termination resistors close to the device can help minimize EMI and noise.
  • To ensure reliable operation of the MAX3491ESD+T in high-temperature environments, it's essential to follow proper thermal management practices, such as providing adequate heat sinking, using a thermally conductive PCB material, and keeping the device away from heat sources. Additionally, derating the device's power consumption and using a thermal protection circuit can help prevent overheating.
  • In a multi-point RS-485 bus configuration, the MAX3491ESD+T can be used as a transceiver, but it's essential to ensure that the bus is properly terminated and that the total bus length does not exceed the recommended maximum. Additionally, the device's slew rate and output impedance should be considered to prevent signal reflections and ensure reliable data transmission.
  • To troubleshoot common issues with the MAX3491ESD+T, start by checking the device's power supply and signal connections. Verify that the device is properly configured and that the RS-485 bus is properly terminated. Use an oscilloscope to check the signal waveforms and look for signs of noise or distortion. If the issue persists, consult the device's datasheet and application notes for guidance on troubleshooting and debugging.
  • When using the MAX3491ESD+T in a system with multiple voltage domains, it's essential to ensure that the device's power supply and signal connections are properly isolated and level-shifted to prevent damage or malfunction. Additionally, consider using voltage translators or level shifters to ensure that the device's input and output signals are compatible with the system's voltage domains.

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MAX3491ESD+T 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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