{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74ALS175D","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74ALS175D","canonicalUrl":"https://icboms.com/texas-instruments/SN74ALS175D","factsUrl":"https://icboms.com/api/mcp/products/SN74ALS175D","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments SN74ALS175D, 74ALS series, D-Type flip-flop, 4-bit, positive edge triggered, master reset, complementary outputs, 50 MHz clock, 4.5V–5.5V supply, 17 ns propagation delay at 5V/50pF, 0°C to 70°C, 16-SOIC.","salesMarkdown":"## What the SN74ALS175D is and where it fits The Texas Instruments SN74ALS175D is a single-element, 4-bit D-type flip-flop from the 74ALS family, featuring positive-edge triggering, complementary outputs, and a master-reset function. It clocks at 50 MHz and delivers a propagation delay of 17 ns at 5 V with a 50 pF load, making it a solid choice for register, latch, and buffer applications in 5 V logic systems. The part is housed in a 16-SOIC surface-mount package and operates over the commercial temperature range of 0°C to 70°C, suitable for indoor equipment like office peripherals, test gear, and industrial control panels that stay in a conditioned environment. ## 50 MHz clock and 17 ns delay — timing budget reality The 50 MHz clock and 17 ns propagation delay at 5 V, 50 pF define the timing envelope. The 400 µA output high and 8 mA output low drive are typical for ALS logic. ## Active lifecycle and compliance The SN74ALS175D carries an Active product status, so there is no last-time-buy clock ticking. It is ROHS3 compliant, which covers the EU RoHS directive without exemptions. For a 5 V logic part that has been in production for decades, this is a stable, low-risk line item — no PCN surprises expected in the near term. ## Package and footprint notes The 16-SOIC package has a 3.90 mm body width and 0.154\" pitch. The part ships in Tube.","metaTitle":"SN74ALS175D D-Type Flip-Flop, 50 MHz, 16-SOIC","metaDescription":"TI SN74ALS175D D-type flip-flop with master reset, complementary outputs, 50 MHz clock, 17 ns propagation delay. Active, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":"74ALS","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"D-Type","Series":"74ALS","Package":"Tube","Function":"Master Reset","Output Type":"Complementary","Trigger Type":"Positive Edge","Mounting Type":"Surface Mount","Package / Case":"16-SOIC (0.154\\\", 3.90mm Width)","Clock Frequency":"50 MHz","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 5.5V","Number of Elements":"1","Operating Temperature":"0°C ~ 70°C (TA)","Supplier Device Package":"16-SOIC","Current - Quiescent (Iq)":"14 mA","Current - Output High, Low":"400µA, 8mA","Number of Bits per Element":"4","Max Propagation Delay @ V, Max CL":"17ns @ 5V, 50pF"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.29","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.29000","currency":"USD"},{"qty":10,"price":"$1.15700","currency":"USD"},{"qty":25,"price":"$1.09800","currency":"USD"},{"qty":100,"price":"$0.90210","currency":"USD"},{"qty":250,"price":"$0.84324","currency":"USD"},{"qty":500,"price":"$0.74518","currency":"USD"},{"qty":1000,"price":"$0.58830","currency":"USD"},{"qty":2500,"price":"$0.55500","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/dd9c714b8dbbc16b38342e372d67989d.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is SN74ALS175D a direct replacement for 74LS175?","answer":"The SN74ALS175D is a higher-speed, lower-power alternative to the 74LS175. The ALS version clocks at 50 MHz versus 40 MHz for the 74LS175, and its propagation delay is 17 ns versus 25 ns at 5 V. Both are positive-edge triggered D-types with master reset and complementary outputs in a 16-pin SOIC footprint. Pin compatibility is the same, so it drops in as a functional upgrade — just verify the supply current (14 mA quiescent for ALS vs 18 mA for LS) and output drive (8 mA low for both) against your load."},{"question":"What is the difference between SN74ALS175D and SN74HC175?","answer":"The SN74HC175 is a CMOS high-speed version with a wider supply range (2 V to 6 V) and lower quiescent current, while the SN74ALS175D is bipolar ALS logic limited to 4.5 V to 5.5 V. The ALS part offers higher output drive (8 mA low) compared to HC's typical 4 mA at 5 V, and its 50 MHz clock is faster than HC's typical 30–40 MHz. The trade-off is power: the ALS draws 14 mA quiescent versus microamps for HC. Choose ALS for legacy 5 V TTL-compatible buses; choose HC for low-power or mixed-voltage designs."},{"question":"Is SN74ALS175D RoHS compliant and lead-free?","answer":"Yes, the SN74ALS175D is ROHS3 compliant, meaning it meets the latest RoHS directive with no exempted substances. The part is lead-free and suitable for lead-free soldering processes."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74ALS175D","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74ALS175D 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}}