{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX7221EWG+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX7221EWG","canonicalUrl":"https://icboms.com/analog-devices/MAX7221EWG","factsUrl":"https://icboms.com/api/mcp/products/MAX7221EWG%2B","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX7221EWG+ LED display driver, 8-digit 7-segment + DP, 4-wire serial interface, 24-SOIC (0.295\", 7.50mm width), surface mount, tube.","salesMarkdown":"## What is the MAX7221EWG+ and what does it drive? The MAX7221EWG+ is an LED display driver from Analog Devices that controls up to eight 7-segment digits with decimal points, or 64 individual LEDs, through a 4-wire serial interface. It integrates a BCD code-B decoder, multiplex scan circuitry, segment and digit drivers, and a 150 µA shutdown mode — reducing the BOM count for numeric or alphanumeric display panels. ## Supply voltage and current budget Operating from 4 V to 5.5 V, it draws up to 330 mA supply current when all segments are lit — the 5 V rail must be sized to deliver this peak without droop, especially if the display is multiplexed at full brightness. The 330 mA figure is the worst-case supply current; actual draw depends on segment current set by an external resistor and the number of digits scanned. A 5 V supply with 500 mA headroom covers the driver plus the LED forward current. ## Package and board-fit Housed in a 24-SOIC (0.295\", 7.50 mm width) surface-mount package, the MAX7221EWG+ occupies a standard SOIC footprint with 1.27 mm pitch — no fine-pitch routing challenges. The wide-body SOIC allows adequate trace escape under the part for the 4-wire serial bus and segment outputs. A 0.1 µF decoupling capacitor close to the supply pin is recommended to handle the 330 mA transient when the display updates. Because it is an active, current-generation part, it is available through authorized distribution channels and can be quoted to order against BOM quantities without last-time-buy risk.","metaTitle":"MAX7221EWG+ LED Driver, 8-Digit, 24-SOIC, Active","metaDescription":"MAX7221EWG+ LED driver IC, 8-digit 7-segment, 4-wire serial interface, 24-SOIC, -40 to +85°C. Active production, ROHS3 compliant. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tube","Interface":"4-Wire Serial","Display Type":"LED","Configuration":"7 Segment + DP","Mounting Type":"Surface Mount","Package / Case":"24-SOIC (0.295\\\", 7.50mm Width)","lifecycle_stage":"eol_hot","Current - Supply":"330 mA","Voltage - Supply":"4V ~ 5.5V","Digits or Characters":"8 Digits","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"24-SOIC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$14.78","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$14.78000","currency":"USD"},{"qty":10,"price":"$13.58700","currency":"USD"},{"qty":25,"price":"$13.02360","currency":"USD"},{"qty":100,"price":"$11.47470","currency":"USD"},{"qty":250,"price":"$10.91152","currency":"USD"},{"qty":500,"price":"$10.20756","currency":"USD"},{"qty":1000,"price":"$9.36280","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy MAX7221EWG+ and how do I get a price?","answer":"The MAX7221EWG+ is sourced through independent and authorized distribution."},{"question":"What is MAX7221EWG+'s listed interface?","answer":"It uses a 4-wire serial interface (SPI-compatible) to communicate with the host microcontroller, simplifying the connection to just data in, clock, chip select, and load."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX7221EWG","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX7221EWG when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}