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MAX7221EWG+ - Analog Devices

Description: MAX7221EWG+, LED Display Driver, 8-Digits 64-Segments, 4 → 5.5 V, 24-Pin SOIC W

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MAX7221EWG+ Details

  • Manufacturer Part Number:

    MAX7221EWG+

  • Brand Name:

    Analog Devices Inc

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    24-SOIC_W-300_MIL

  • Package Description:

    0.300 INCH, MS-013, SOIC-24

  • Pin Count:

    24

  • Manufacturer Package Code:

    24-SOIC_W-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-PDSO-G24

  • JESD-609 Code:

    e3

  • Length:

    15.4 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:

    SOP

  • Package Equivalence Code:

    SOP24,.4

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    2.65 mm

  • Supply Voltage-Max:

    5.5 V

  • Supply Voltage-Min:

    4 V

  • Supply Voltage-Nom:

    5 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

  • Width:

    7.5 mm

  • fmax-Min:

    1.3 MHz

MAX7221EWG+ Frequently Asked Questions (FAQs)

  • The MAX7221EWG+ can handle clock frequencies up to 10 MHz, but it's recommended to use a clock frequency of 5 MHz or less for reliable operation.
  • To ensure proper initialization, the MAX7221EWG+ requires a power-on reset (POR) pulse of at least 1 ms duration. Additionally, the chip select (CS) pin should be held high for at least 1 ms after power-up to allow the internal oscillator to stabilize.
  • To minimize noise and ensure reliable operation, it's recommended to follow a star-grounding layout, keep the clock and data lines as short as possible, and use a ground plane to shield the device. Additionally, decoupling capacitors should be placed close to the device's power pins.
  • To troubleshoot issues with the MAX7221EWG+, check the clock and data line signals using an oscilloscope to ensure they are within the specified voltage and timing ranges. Also, verify that the chip select (CS) and write enable (WE) pins are being driven correctly. If issues persist, try resetting the device using the POR pin or re-initializing the device using the initialization sequence.
  • Yes, the MAX7221EWG+ can be used with a 3.3V supply voltage, but the output voltage and current will be reduced accordingly. The output voltage will be approximately 3.3V, and the output current will be limited to 20 mA per segment. Additionally, the device's internal oscillator frequency may be affected, so it's recommended to consult the datasheet for specific details on operation at 3.3V.

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MAX7221EWG+ 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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