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MAX7221ENG+ - Analog Devices

Description: MAXIM INTEGRATED PRODUCTS - MAX7221ENG+ - Display Driver, LCD 8 Digits, 7 Segments, 4.0V to 5.5V Supply, SPI Interface, DIP-24

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MAX7221ENG+ - Analog Devices - PCB symbol
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PCB Footprints
MAX7221ENG+ - Analog Devices PCB footprint - Dual-In-Line Packages - Dual-In-Line Packages - N24+1_2022
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MAX7221ENG+ - Analog Devices - 3D model - Dual-In-Line Packages - N24+1_2022
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MAX7221ENG+ Details

  • Manufacturer Part Number:

    MAX7221ENG+

  • Brand Name:

    Analog Devices Inc

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    24-PDIP-300_MIL

  • Package Description:

    0.300 INCH, PLASTIC, MS-001, DIP-24

  • Pin Count:

    24

  • Manufacturer Package Code:

    24-PDIP-300_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:

    1997-07-15

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    9

  • Additional Feature:

    COMMON-CATHODE

  • Data Input Mode:

    SERIAL

  • Display Mode:

    SEGMENT

  • Interface IC Type:

    LED DISPLAY DRIVER

  • JESD-30 Code:

    R-PDIP-T24

  • JESD-609 Code:

    e3

  • Length:

    30.545 mm

  • Moisture Sensitivity Level:

    1

  • Multiplexed Display Capability:

    YES

  • Number of Digits/Characters:

    8-DIGIT

  • Number of Functions:

    1

  • Number of Segments:

    7

  • Number of Terminals:

    24

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    DIP

  • Package Equivalence Code:

    DIP24,.3

  • Package Shape:

    RECTANGULAR

  • Package Style:

    IN-LINE

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    4.572 mm

  • Supply Voltage-Max:

    5.5 V

  • Supply Voltage-Min:

    4 V

  • Supply Voltage-Nom:

    5 V

  • Surface Mount:

    NO

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    Matte Tin (Sn) - annealed

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    2.54 mm

  • Terminal Position:

    DUAL

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

    30

  • Width:

    7.62 mm

  • fmax-Min:

    1.3 MHz

MAX7221ENG+ Frequently Asked Questions (FAQs)

  • The MAX7221ENG+ can handle clock frequencies up to 10 MHz, but it's recommended to use a clock frequency between 100 kHz to 1 MHz for optimal performance.
  • To ensure proper initialization, the MAX7221ENG+ requires a power-on reset (POR) pulse of at least 1 ms, followed by a clock signal and a valid data signal. The device will then automatically initialize and start operating.
  • To minimize noise and EMI, it's recommended to use a 4-layer PCB with a solid ground plane, keep the clock and data lines as short as possible, and use a shielded cable for the serial interface. Additionally, decouple the power supply with a 0.1 μF capacitor and a 10 μF capacitor in parallel.
  • To troubleshoot issues with the MAX7221ENG+, check the clock and data signals using an oscilloscope, ensure that the device is properly initialized, and verify that the data is being sent correctly. Also, check for any noise or interference on the power supply lines and ensure that the display is properly connected and configured.
  • The MAX7221ENG+ is designed to operate with a 3.3V power supply, but it can tolerate a 5V power supply with some limitations. However, it's not recommended to use a 5V power supply as it may reduce the device's reliability and lifespan. If a 5V power supply is used, ensure that the input signals are 3.3V-compatible and use a voltage regulator to reduce the power supply voltage to 3.3V.

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MAX7221ENG+ 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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