{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74LS670N","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74LS670N","canonicalUrl":"https://icboms.com/texas-instruments/SN74LS670N","factsUrl":"https://icboms.com/api/mcp/products/SN74LS670N","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74LS series Register File, SN74LS670N, 4 x 4 organization, 4.75-5.25V supply, 0-70°C, 16-DIP (0.300\", 7.62mm), Through Hole, Tube.","salesMarkdown":"## 4 x 4 register file in a 16-pin DIP The Texas Instruments SN74LS670N is a 4 x 4 register file from the 74LS Schottky family, organized as four independent 4-bit registers with a single 1:1 addressing scheme per circuit. It sits in a 16-pin DIP (0.300\" body) with through-hole mounting — a footprint that has been standard in industrial control and legacy processor designs for decades. Output drive is specified at 2.6 mA source and 8 mA sink — enough to drive standard TTL inputs on a backplane but not intended for heavy capacitive or relay loads. ## What the 4 x 4 architecture means on the bench Four independent 4-bit registers with separate read and write addressing — the 1:1 circuit per register means each register has its own address decode, so simultaneous read and write operations to different registers are possible. The 16-pin DIP package dedicates four pins to address inputs (two for read, two for write), four for data I/O, plus control strobes and supply rails. The 2.6 mA / 8 mA output drive is typical for 74LS — expect a fan-out of about 10 standard LS loads per output. If driving a bus with higher capacitance, a 74LS244 buffer after the register file is a common layout fix.","metaTitle":"SN74LS670N Register File, 74LS, 4 x 4, 16-DIP","metaDescription":"Texas Instruments SN74LS670N 4 x 4 register file, 74LS family, 4.75-5.25V supply, 0-70°C, 16-DIP. Active, RoHS3 compliant. Sourced per RFQ.","metaKeywords":null},"attributes":{"series":"74LS","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Type":"Register File","Series":"74LS","Circuit":"1 x 1:1","Package":"Tube","Mounting Type":"Through Hole","Package / Case":"16-DIP (0.300\\\", 7.62mm)","lifecycle_stage":"eol_hot","Voltage - Supply":"4.75V ~ 5.25V","Independent Circuits":"4","Operating Temperature":"0°C ~ 70°C (TA)","Voltage Supply Source":"Single Supply","Supplier Device Package":"16-PDIP","Current - Output High, Low":"2.6mA, 8mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.9","priceTiers":[{"qty":1,"price":"$2.90000","currency":"USD"},{"qty":10,"price":"$2.60400","currency":"USD"},{"qty":25,"price":"$2.46120","currency":"USD"},{"qty":100,"price":"$2.13310","currency":"USD"},{"qty":250,"price":"$2.02376","currency":"USD"},{"qty":500,"price":"$1.81590","currency":"USD"},{"qty":1000,"price":"$1.54800","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/49329a4d26f32212d9304acae677d391.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SN74LS670N/alternatives.json"},"ai":{"faq":[{"question":"Will SN74LS670N drop into a board designed for SN74LS348N?","answer":"No — the SN74LS348N is a priority encoder (1 x 8:3) in the same 16-pin DIP footprint but with completely different pinout and function. The SN74LS670N is a register file with address and data I/O pins; the SN74LS348N encodes eight inputs to three outputs. They are not pin-compatible or functionally interchangeable."},{"question":"What compliance documentation does Texas Instruments provide for SN74LS670N?","answer":"Texas Instruments provides RoHS3 compliance certification (lead-free per EU 2015/863). The part is also REACH compliant and carries the standard 74LS family datasheet with electrical characteristics, timing diagrams, and application notes. No UL or IEC certification is listed for this logic part."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74LS670N","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74LS670N 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}}