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MAX3485CSA+T - Analog Devices

Description: RS-422/RS-485 Interface IC

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MAX3485CSA+T - Analog Devices PCB footprint - Small Outline Packages - Small Outline Packages - 8 SO-3
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MAX3485CSA+T - Analog Devices  - 3D model - Small Outline Packages - 8 SO-3
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MAX3485CSA+T Details

  • Manufacturer Part Number:

    MAX3485CSA+T

  • Brand Name:

    Analog Devices Inc

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    8-SOIC_N-150_MIL

  • Package Description:

    SOP, SOP8,.25

  • Pin Count:

    8

  • Manufacturer Package Code:

    8-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:

    COMMON I/O; 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-G8

  • JESD-609 Code:

    e3

  • Length:

    4.9 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    8

  • Operating Temperature-Max:

    70 °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:

    SOP8,.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

  • Technology:

    CMOS

  • Temperature Grade:

    COMMERCIAL

  • 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

MAX3485CSA+T Frequently Asked Questions (FAQs)

  • A good PCB layout for the MAX3485CSA+T involves keeping the analog and digital grounds separate, using a solid ground plane, and placing the device close to the transceiver. Additionally, it's recommended to use a 4-layer PCB with a dedicated layer for the analog signals, and to minimize the length of the traces between the device and the transceiver.
  • To ensure proper termination for RS-485 applications, a 120Ω termination resistor should be placed at the far end of the cable, and a 220Ω pull-up resistor should be connected to the DE pin. Additionally, the RE pin should be connected to the logic high level when the transmitter is enabled.
  • The maximum cable length supported by the MAX3485CSA+T depends on the data rate and the type of cable used. As a general rule, the maximum cable length is approximately 4000 feet at 100kbps, 1000 feet at 1Mbps, and 400 feet at 10Mbps.
  • To handle hot swapping with the MAX3485CSA+T, it's recommended to use a hot-swap controller or a power switch with a built-in hot-swap function. This will ensure that the device is properly powered down before the connection is broken, and that the bus is not damaged during the hot-swap process.
  • The recommended power-up sequence for the MAX3485CSA+T is to power up the VCC pin first, followed by the VDD pin. This ensures that the device is properly initialized and that the internal voltage regulators are enabled in the correct order.

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MAX3485CSA+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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