{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LF398P","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LF398P","canonicalUrl":"https://icboms.com/texas-instruments/LF398P","factsUrl":"https://icboms.com/api/mcp/products/LF398P","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LF398P, Sample and Hold Circuit, 1 Circuit, 10 nA Input Bias, 2 mV Input Offset, 4.5 mA Supply, 10 V to 36 V Span, 0°C to 70°C, 8-DIP Through Hole.","salesMarkdown":"## Sample-and-hold in a through-hole DIP — what the LF398P brings to the analog chain The Texas Instruments LF398P is a monolithic sample-and-hold circuit in an 8-pin DIP package (8-DIP, 0.300\" body, 7.62 mm pitch, through-hole mounting). It holds one sample of an analog input voltage on an external hold capacitor, with a typical acquisition time determined by that capacitor value. Input bias current is 10 nA, and input offset voltage is 2 mV. ## 10 V to 36 V supply span — where it lands in the power budget The 10 V minimum supply means the LF398P needs at least ±5 V dual rails or a single 10 V rail to function. The 36 V maximum covers ±18 V supplies, common in ±15 V analog systems. The 4.5 mA supply current is the quiescent draw — the hold capacitor charging current adds to the total from the input signal source, not the supply pin. In a ±15 V system the part dissipates about 135 mW quiescent, well within the DIP package's thermal capability at 70°C ambient. It will not meet the -40°C cold start or 85°C+ soak required for automotive under-hood, outdoor telecom cabinets, or factory floor zones near ovens. For those environments, an industrial or military-temperature sample-and-hold (e.g., the LF398H in a hermetic package, or a modern CMOS S/H with extended range) would be needed. ## Active production, but RoHS non-compliant — a sourcing flag For new designs with a RoHS mandate, a Pb-free equivalent (e.g., the LF398N/NOPB in a PDIP package) should be specified. For legacy BOMs or exempt applications (military, medical, high-rel), the LF398P remains a valid, in-production choice.","metaTitle":"LF398P Sample and Hold Circuit, 8-DIP Through Hole, Active","metaDescription":"LF398P sample and hold circuit from Texas Instruments. 10 V to 36 V supply, 4.5 mA supply current, 0°C to 70°C. 8-DIP through-hole package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Package":"Bulk","Mounting Type":"Through Hole","Amplifier Type":"Sample and Hold","Package / Case":"8-DIP (0.300\\\", 7.62mm)","lifecycle_stage":"eol_hot","Current - Supply":"4.5mA","Number of Circuits":"1","Current - Input Bias":"10 nA","Operating Temperature":"0°C ~ 70°C","Voltage - Input Offset":"2 mV","Supplier Device Package":"8-PDIP","Voltage - Supply Span (Max)":"36 V","Voltage - Supply Span (Min)":"10 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.66","stockQuantity":0,"priceTiers":[{"qty":181,"price":"$1.66000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/3a8cd77d6233eb45eced17824d4cae49.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LF398P","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LF398P 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}}