{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CD4543BMT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"CD4543BMT","canonicalUrl":"https://icboms.com/texas-instruments/CD4543BMT","factsUrl":"https://icboms.com/api/mcp/products/CD4543BMT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments CD4543BMT BCD-to-LCD driver, 1 digit, 7 segment, 3V–18V supply, 40 nA, 16-SOIC, Tape & Reel.","salesMarkdown":"The CD4543BMT: That means it remains a valid line-item for new builds and ongoing production — no last-time-buy scramble, no forced redesign. The device is ROHS3 compliant, so it clears the regulatory gate for EU and most global markets without a waiver. ## 3V to 18V supply — the fit for mixed-voltage and battery systems The 3V to 18V supply range is the headline spec that decides where this part lands. That 40 nA typical supply current means it adds negligible drain in a battery-backed meter or portable instrument that spends most of its life asleep. The operating temperature range of -55°C to 125°C covers military and industrial extremes — think engine-bay instrumentation, outdoor utility meters, or avionics panel displays. The wide temperature grade also gives headroom for self-heating in a sealed enclosure. ## BCD input, LCD output — what the interface actually drives This is a BCD-to-7-segment LCD driver, not an LED driver. The BCD input accepts four-bit binary-coded decimal from a microcontroller or counter, and the output drives the segments of a single-digit LCD. The LCD drive waveform is inherently AC-coupled — the CD4543B generates the backplane and segment signals internally, so you don't need external oscillator or level-shift components for the glass. ## 16-SOIC package — board-fit for automated assembly The supplier device package is 16-SOIC, so the land pattern matches the JEDEC MS-012 variation. Tape & Reel packaging is the typical reel for volume production; Cut Tape (CT) is also available for prototype or low-volume builds. No exposed pad — standard SOIC-16 thermal management applies.","metaTitle":"CD4543BMT BCD-to-LCD Driver, 1-Digit, 16-SOIC","metaDescription":"Active TI CD4543BMT BCD-to-7-segment LCD driver, 3V–18V supply, 40 nA supply current, -55°C to 125°C range. 16-SOIC SMD. Quoted per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Interface":"BCD","Display Type":"LCD","Configuration":"7 Segment","Mounting Type":"Surface Mount","Package / Case":"16-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Current - Supply":"40 nA","Voltage - Supply":"3V ~ 18V","Digits or Characters":"1 Digit","Operating Temperature":"-55°C ~ 125°C","Supplier Device Package":"16-SOIC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.23","priceTiers":[{"qty":1,"price":"$1.23000","currency":"USD"},{"qty":10,"price":"$1.09800","currency":"USD"},{"qty":25,"price":"$1.04160","currency":"USD"},{"qty":100,"price":"$0.85570","currency":"USD"},{"qty":250,"price":"$0.79992","currency":"USD"},{"qty":500,"price":"$0.70692","currency":"USD"},{"qty":1250,"price":"$0.55809","currency":"USD"},{"qty":2500,"price":"$0.52650","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/4eb6699abfd5750dd922e1dd33f509b7.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/CD4543BMT/alternatives.json"},"ai":{"faq":[{"question":"Will the CD4543BMT drop in as a replacement for the CD74HCT4511E?","answer":"Not without a board change. The CD74HCT4511E drives LED displays with a 4.5V minimum supply and comes in a through-hole DIP package. The CD4543BMT drives LCDs, operates from 3V to 18V, and is surface-mount in 16-SOIC. The function is similar — BCD-to-7-segment — but the display type and package are different, so the PCB layout and the display glass or LED array must match the driver."},{"question":"What compliance documentation does Texas Instruments provide for the CD4543BMT?","answer":"The CD4543BMT is ROHS3 Compliant, which means it meets the EU RoHS directive without exemptions for restricted substances. Texas Instruments typically provides a Certificate of Compliance and material declaration upon request through distribution channels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/CD4543BMT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/CD4543BMT when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}