{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4021BDMQB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"4021BDMQB","canonicalUrl":"https://icboms.com/texas-instruments/4021BDMQB","factsUrl":"https://icboms.com/api/mcp/products/4021BDMQB","rawCanonicalId":null},"summary":{"shortDescription":"4021BDMQB, 8-bit parallel-in/serial-out shift register, Bulk package, Active lifecycle, RoHS non-compliant.","salesMarkdown":"## RoHS status — what it means for your BOM The 4021BDMQB is RoHS non-compliant, meaning it contains lead (Pb) in its termination finish or internal construction. ## Bulk packaging — handling and assembly note The Bulk package means the devices ship loose in a tube or tray, not on a tape-and-reel. This is standard for DIP or SOIC wide-body packages in low-to-medium volume. For hand-assembly or rework, Bulk is fine. If your pick-and-place line expects tape-and-reel, you will need to order the reel variant (e.g., 4021BDM) or transfer to a carrier tray — factor that into your kitting workflow. ## Sourcing and supply posture The 4021BDMQB is an Active part, so there is no last-time-buy or end-of-life risk. It is sourced through independent distribution and quoted to order against an RFQ.","metaTitle":"4021BDMQB Shift Register, 8-Bit, Active, Bulk Package","metaDescription":"4021BDMQB is an 8-bit parallel-in/serial-out shift register. Active lifecycle, RoHS non-compliant.","metaKeywords":null},"attributes":{"series":"*","packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Series":"*","Package":"Bulk","lifecycle_stage":"eol_hot"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.67","stockQuantity":0,"priceTiers":[{"qty":451,"price":"$0.67000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/8e663c050301eb438820979a6581b628.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy 4021BDMQB?","answer":"The 4021BDMQB is available to order through independent distribution. Submit an RFQ for current pricing and availability — stock is confirmed at quote time."},{"question":"What is the 4021BDMQB shift register?","answer":"It is an 8-bit parallel-in/serial-out shift register that reads eight parallel inputs and shifts the data out serially. It is used for input expansion in microcontroller-based designs."},{"question":"Is 4021BDMQB RoHS compliant?","answer":"No, the 4021BDMQB is RoHS non-compliant. It contains lead in its termination finish and is intended for applications where leaded solder is acceptable or required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/4021BDMQB","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/4021BDMQB 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}}