{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SNJ54LS490W","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SNJ54LS490W","canonicalUrl":"https://icboms.com/texas-instruments/SNJ54LS490W","factsUrl":"https://icboms.com/api/mcp/products/SNJ54LS490W","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments SNJ54LS490W decade counter, LS series, Bulk package, active lifecycle, RoHS non-compliant.","salesMarkdown":"## Decade counter in the LS family The Texas Instruments SNJ54LS490W is a decade counter from the LS (Low-Power Schottky) series, a logic family that balances speed and power for TTL-based systems. It counts in decade (0-9) sequence and is used in frequency division, time-base generation, and event counting within industrial control, instrumentation, and military/aerospace digital logic boards. The part is supplied in Bulk packaging, which means it ships as loose units — typical for through-hole or DIP-style ICs that go into prototype runs, repair stock, or low-volume production where tape-and-reel is unnecessary. ## Active lifecycle and RoHS status The SNJ54LS490W carries an Active product status — the manufacturer continues to support it for new designs and production builds. One important compliance note: this device is RoHS non-compliant. The lead-bearing finish is typical for legacy LS-series logic, which was designed before the RoHS directive. If your BOM requires RoHS-10 or lead-free solder processes, this part will not pass — you would need to evaluate a lead-free equivalent or accept the exemption for military/aerospace applications where RoHS exemptions often apply. ## Sourcing posture and availability Because the part is Active, it is sourced through authorized TI distribution channels as well as independent inventory. We quote the part to order against your BOM quantity — availability and current pricing are confirmed at RFQ time, not from a static stock figure.","metaTitle":"SNJ54LS490W Decade Counter, LS Series, Texas Instruments","metaDescription":"Texas Instruments SNJ54LS490W decade counter, LS series, Bulk package. Active lifecycle, RoHS non-compliant. Sourced to order against an RFQ.","metaKeywords":null},"attributes":{"series":"*","packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Series":"*","Package":"Bulk","lifecycle_stage":"eol_hot"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.13","stockQuantity":0,"priceTiers":[{"qty":96,"price":"$3.13000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/58ce81951206b02546d6c909f7192a36.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is a direct replacement for SNJ54LS490W?","answer":"The peer SNJ54HC193J is a 54-series counter from the HC family (higher speed, CMOS), but it is a 4-bit binary up/down counter, not a decade counter — the function differs. A true replacement would require checking the specific logic function and pinout against the original circuit."},{"question":"Where can I buy SNJ54LS490W?","answer":"The SNJ54LS490W is sourced to order against an RFQ through independent and authorized distribution channels. Availability and pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SNJ54LS490W","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SNJ54LS490W 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}}