{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74LS148DR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74LS148DR","canonicalUrl":"https://icboms.com/texas-instruments/SN74LS148DR","factsUrl":"https://icboms.com/api/mcp/products/SN74LS148DR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74LS Priority Encoder, SN74LS148DR, 1 x 8:3 circuit, 4.75-5.25V supply, 0°C to 70°C, 16-SOIC package, Surface Mount.","salesMarkdown":"## Priority encoder for 8-line to 3-line conversion The SN74LS148DR is a priority encoder from Texas Instruments' 74LS family, encoding eight active-low inputs into a three-bit binary output. The 1 x 8:3 circuit means a single encoder handles eight input lines, outputting the highest-priority active input's binary code. ## Output drive and signal integrity The rated output currents are 400 µA sourcing (high) and 8 mA sinking (low). That 20:1 asymmetry means the encoder drives CMOS logic inputs cleanly on the high side but has limited fan-out on the low side — a typical LS TTL load of 1.6 mA per input allows sinking five standard loads before the output voltage rises above V_OL(max). ## Package and board integration Supplied in a 16-SOIC package with a 3.90 mm body width and 1.27 mm pin pitch, the SN74LS148DR mounts on the board surface — the 0.154-inch width is the standard SOIC-16 footprint shared across the 74LS logic family, so a single PCB land pattern serves multiple encoder or decoder variants.","metaTitle":"SN74LS148DR 74LS Priority Encoder, 1 x 8:3, 16-SOIC","metaDescription":"Texas Instruments SN74LS148DR priority encoder, 1 x 8:3 circuit, 4.75-5.25V supply, 0-70°C. Active production, ROHS3 compliant. Sourced to order.","metaKeywords":null},"attributes":{"series":"74LS","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Type":"Priority Encoder","Series":"74LS","Circuit":"1 x 8:3","Package":"Tape & Reel (TR); Cut Tape (CT)","Mounting Type":"Surface Mount","Package / Case":"16-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"4.75V ~ 5.25V","Independent Circuits":"1","Operating Temperature":"0°C ~ 70°C","Voltage Supply Source":"Single Supply","Supplier Device Package":"16-SOIC","Current - Output High, Low":"400µA, 8mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.66","priceTiers":[{"qty":1,"price":"$1.66000","currency":"USD"},{"qty":10,"price":"$1.48200","currency":"USD"},{"qty":25,"price":"$1.40680","currency":"USD"},{"qty":100,"price":"$1.15560","currency":"USD"},{"qty":250,"price":"$1.08024","currency":"USD"},{"qty":500,"price":"$0.95464","currency":"USD"},{"qty":1000,"price":"$0.75366","currency":"USD"},{"qty":2500,"price":"$0.71100","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/8917628062708722d1df4fc908d94172.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SN74LS148DR/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74LS148DR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74LS148DR 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}}