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MAX3485CSA+ - Analog Devices

Description: MAX3485CSA+, Line Transceiver, RS-485, RS-422 10 Mbit/s Differential, 3.3 V, 8-Pin SOIC

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MAX3485CSA+ Details

  • Manufacturer Part Number:

    MAX3485CSA+

  • Brand Name:

    Analog Devices Inc

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    8-SOIC_N-150_MIL

  • Package Description:

    0.150 INCH, SO-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:

    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+ Frequently Asked Questions (FAQs)

  • A good layout and routing practice for the MAX3485CSA+ 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 cable away from noise sources.
  • To ensure reliable communication in a noisy industrial environment, use a shielded cable, twisted pair wiring, and a common-mode choke to reduce electromagnetic interference (EMI). Also, consider using a repeater or an isolator to extend the distance and improve the signal quality. Additionally, implement error-checking and correction mechanisms in the communication protocol to detect and correct errors.
  • The maximum cable length supported by the MAX3485CSA+ depends on the data rate, cable characteristics, and noise environment. As a general guideline, the MAX3485CSA+ can support cable lengths up to 4000 feet (1219 meters) at a data rate of 10 Mbps. However, it's recommended to consult the datasheet and perform simulations or testing to determine the maximum cable length for a specific application.
  • The MAX3485CSA+ 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 the DE pin to the RE pin, and for full-duplex operation, tie the DE pin to VCC and the RE pin to GND. Additionally, the direction control pin (DIR) can be used to control the direction of data transmission.
  • Common failure modes of the MAX3485CSA+ include overvoltage, overcurrent, and ESD damage. To mitigate these failure modes, use voltage regulators and overvoltage protection devices, add current-limiting resistors, and implement ESD protection circuits. Additionally, follow proper PCB design and layout guidelines, and ensure that the device is operated within its recommended operating conditions.

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MAX3485CSA+ 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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