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MAX4890ETJ+ - Analog Devices

Description: Maxim MAX4890ETJ+, 4-port Ethernet Switch, 10 Mbit/s, 100 Mbit/s, 1000 Mbit/s 3 ??3.6 V, 32-Pin TQFN%0%0

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MAX4890ETJ+ - Analog Devices - PCB symbol
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PCB Footprints
MAX4890ETJ+ - Analog Devices PCB footprint - Quad Flat No-Lead - Quad Flat No-Lead - 32 TQFN-EP(T3255-4)
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MAX4890ETJ+ - Analog Devices - 3D model - Quad Flat No-Lead - 32 TQFN-EP(T3255-4)
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MAX4890ETJ+ Details

  • Manufacturer Part Number:

    MAX4890ETJ+

  • Brand Name:

    Analog Devices Inc

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    32-LFCSP-5X5X0.75

  • Package Description:

    5 X 5 MM, TQFN-32

  • Pin Count:

    32

  • Manufacturer Package Code:

    32-LFCSP-5X5X0.75

  • Country Of Origin:

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

  • HTS Code:

    8542.39.00.01

  • Date Of Intro:

    2005-02-17

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    10

  • JESD-30 Code:

    S-XQCC-N32

  • JESD-609 Code:

    e3

  • Length:

    5 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    32

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Package Body Material:

    UNSPECIFIED

  • Package Code:

    HVQCCN

  • Package Shape:

    SQUARE

  • Package Style:

    CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    0.8 mm

  • Supply Voltage-Nom:

    3.3 V

  • Surface Mount:

    YES

  • Technology:

    BICMOS

  • Telecom IC Type:

    LAN SWITCHING CIRCUIT

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    Matte Tin (Sn) - annealed

  • Terminal Form:

    NO LEAD

  • Terminal Pitch:

    0.5 mm

  • Terminal Position:

    QUAD

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

    30

  • Width:

    5 mm

MAX4890ETJ+ Frequently Asked Questions (FAQs)

  • A good PCB layout for the MAX4890ETJ+ involves keeping the analog and digital grounds separate, using a solid ground plane, and placing the device close to the power supply. Additionally, it's recommended to use a shielded cable for the RS-485 bus and to keep the bus lines as short as possible.
  • To ensure reliable communication in noisy industrial environments, use a shielded cable, twisted pair wiring, and implement error-checking mechanisms such as CRC or checksum in the communication protocol. Additionally, consider using a common-mode choke or ferrite beads to filter out high-frequency noise.
  • The maximum cable length supported by the MAX4890ETJ+ depends on the data rate, cable characteristics, and noise environment. As a general guideline, the MAX4890ETJ+ can support cable lengths up to 4000 feet (1219 meters) at a data rate of 250 kbps. However, it's recommended to consult the datasheet and perform tests to determine the maximum cable length for a specific application.
  • The MAX4890ETJ+ 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 and RE together and connect them to a single control signal. For full-duplex operation, connect DE and RE to separate control signals.
  • The recommended termination scheme for the RS-485 bus using the MAX4890ETJ+ is to use a 120-ohm termination resistor at each end of the bus, and to match the impedance of the cable to the termination resistor. This helps to minimize reflections and ensure reliable communication.

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MAX4890ETJ+ 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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