{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX6921AWI+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX6921AWI","canonicalUrl":"https://icboms.com/analog-devices/MAX6921AWI","factsUrl":"https://icboms.com/api/mcp/products/MAX6921AWI%2B","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX6921AWI+, VF Tube Driver, 4-Wire Serial Interface, 8V to 76V Supply, 1.65 mA Supply Current, -40°C to +125°C, 28-SOIC (0.295\", 7.50mm Width), Tube, Active.","salesMarkdown":"## What it is and where it fits The Analog Devices MAX6921AWI+ is a vacuum fluorescent (VF) display tube driver that takes a 4-wire serial input and drives the high-voltage grid and anode segments of a VFD panel. The supply range spans 8V to 76V, which covers the typical anode voltage needed for most single- and multi-digit VFD tubes without an external boost converter. The driver sits between a host MCU (or serial controller) and the VFD tube, handling the level shift from logic-level signals to the tube's high-voltage drive requirements. Operating temperature covers -40°C to +125°C. The 28-SOIC package with 0.295-inch body width (7.50 mm) is a surface-mount footprint. ## Supply range and current draw The 8V to 76V supply input is the headline rating for this part — it determines whether the MAX6921AWI+ can directly power the VFD tube's anode supply or needs an intermediate regulator. At 76V max, it handles most standard VFD tubes (typically 12V to 70V anode). Supply current is 1.65 mA typical, which is low enough that multiple drivers on a single high-voltage rail won't stress the bias supply. Watch the total current draw if driving a multi-digit panel with several drivers paralleled. ## Package and mounting Supplied in a Tube, the 28-SOIC wide-body package (0.295-inch, 7.50 mm width) is a surface-mount footprint. The supplier device package is listed as 28-SOIC. ## Lifecycle and compliance ROHS3 compliant. No NRND or last-time-buy dates have been issued. No pin-compatible second source is listed.","metaTitle":"MAX6921AWI+ VFD Tube Driver, 8V-76V, 28-SOIC, Active","metaDescription":"MAX6921AWI+ VFD tube driver from Analog Devices. 4-wire serial interface, 8V to 76V supply, -40°C to +125°C, 28-SOIC. Active production, ROHS3 compliant.","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":"Vacuum Fluorescent (VF)","Mounting Type":"Surface Mount","Package / Case":"28-SOIC (0.295\\\", 7.50mm Width)","lifecycle_stage":"eol_hot","Current - Supply":"1.65 mA","Voltage - Supply":"8V ~ 76V","Operating Temperature":"-40°C ~ 125°C","Supplier Device Package":"28-SOIC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$9.52","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$9.52000","currency":"USD"},{"qty":10,"price":"$8.59900","currency":"USD"},{"qty":25,"price":"$8.19920","currency":"USD"},{"qty":100,"price":"$7.11930","currency":"USD"},{"qty":250,"price":"$6.79932","currency":"USD"},{"qty":500,"price":"$6.19938","currency":"USD"},{"qty":1000,"price":"$5.39946","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a81510744b4a8937b79b6e4eee871248.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can MAX6921AWI+ drive multiple VFD tubes?","answer":"Yes, the driver can drive multiple VFD tubes if the total segment and grid count stays within the output capability of the device and the supply current budget. The 1.65 mA supply current is the chip's own draw; the tube load current is additional and must be within the driver's output ratings."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX6921AWI","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX6921AWI when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}