{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TP3420AV308","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TP3420AV308","canonicalUrl":"https://icboms.com/texas-instruments/TP3420AV308","factsUrl":"https://icboms.com/api/mcp/products/TP3420AV308","rawCanonicalId":null},"summary":{"shortDescription":"TP3420AV308, Digital SLIC, Basic Function, 1 Function, PQC, ISDN Interface, 4.75V ~ 5.25V Supply, 20-PLCC (9x9) Package, Surface Mount, Active.","salesMarkdown":"## Digital SLIC for 5V ISDN line cards The TP3420AV308 is a digital subscriber line interface circuit (SLIC) from the TP3420 family, designed as a basic-function, single-channel interface for ISDN telecom equipment. It operates from a 4.75V to 5.25V supply rail, the standard for legacy 5V digital loop carrier and PBX line card designs. ## Supply rail and interface fit The 4.75V to 5.25V supply range means this SLIC expects a regulated 5V rail with ±5% tolerance. If your BOM uses a 3.3V-only backplane, this part will not drop in without a local 5V regulator. The ISDN interface is the defining feature — this is not a generic analog SLIC for POTS; it is specific to ISDN basic-rate access, typically used in NT1, TA, or central-office line termination cards. ## Package and assembly note The 20-PLCC with J-leads (20-LCC J-Lead) is a known footprint for telecom SLICs. J-leads allow visual inspection of solder joints, which is useful for field-repair scenarios. The 9x9 mm body is compact for a 20-pin device. No exposed thermal pad — dissipation is through the leads and PCB copper. RoHS non-compliant per the listing, so verify your assembly's solder alloy and exemption requirements if you are running a lead-free line. ## Lifecycle and sourcing posture For a telecom SLIC that may be supporting long-lifefield ISDN infrastructure, this means you can qualify it for new production runs without immediate obsolescence risk.","metaTitle":"TP3420AV308 Digital SLIC, ISDN Interface, 20-PLCC, Active","metaDescription":"TP3420AV308 digital subscriber line interface circuit (SLIC) with ISDN interface, 4.75V~5.25V supply, 20-PLCC package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Package":"Bulk","Interface":"ISDN","Mounting Type":"Surface Mount","Package / Case":"20-LCC (J-Lead)","lifecycle_stage":"eol_hot","Voltage - Supply":"4.75V ~ 5.25V","Supplier Device Package":"20-PLCC (9x9)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$10.0","stockQuantity":0,"priceTiers":[{"qty":30,"price":"$10.00000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/4e2e42959b121deca103d4986d90b63f.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TP3420AV308","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TP3420AV308 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}}