{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CD74HCT4046AMT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"CD74HCT4046AMT","canonicalUrl":"https://icboms.com/texas-instruments/CD74HCT4046AMT","factsUrl":"https://icboms.com/api/mcp/products/CD74HCT4046AMT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74HCT series CD74HCT4046AMT, Phase Lock Loop (PLL) with VCO, CMOS input/output, 38 MHz max frequency, 4.5V–5.5V supply, -55°C to 125°C, 16-SOIC surface mount.","salesMarkdown":"## 38 MHz PLL with integrated VCO — what it buys you The Texas Instruments CD74HCT4046AMT is a single-circuit phase-locked loop (PLL) with an on-chip voltage-controlled oscillator (VCO), built in 74HCT CMOS logic. It accepts CMOS-level inputs and delivers CMOS-level outputs, running from a 4.5 V to 5.5 V supply rail. The VCO can be swept up to 38 MHz, which sets the practical upper bound for the PLL's capture and lock range. The 1:4 input-to-output ratio means one reference input can drive four phase-detector outputs — useful for distributing a clean clock or synchronizing multiple local oscillators from a single source. ## Military temperature range — not just industrial Rated from -55°C to 125°C operating, this part crosses into military/defense territory. That makes it a candidate for avionics black boxes, satellite power-conditioning loops, or downhole instrumentation where the ambient hits 105°C+ and the junction needs headroom. The 16-SOIC package (3.90 mm body width) is a standard surface-mount footprint, so board layout is straightforward — no exotic pad geometry required. ## Active lifecycle — no end-of-life clock ticking Marked as Active with ROHS3 compliance, so there is no LTB window to chase, no last-buy deadline. For a BOM line that needs a PLL with a VCO in a 5 V system, this part is safe to qualify into production without worrying about a sudden obsolescence notice. The 74HCT family has broad distribution, so supply is generally stable — no allocation-era panic needed here. ## Sourcing and fit for the BOM This is a current-production, widely stocked part in the 74HCT logic family.","metaTitle":"CD74HCT4046AMT PLL with VCO, 38 MHz, 16-SOIC","metaDescription":"CD74HCT4046AMT phase-locked loop with VCO, 38 MHz max, CMOS I/O, 4.5V–5.5V, -55°C to 125°C, 16-SOIC. Active, ROHS3.","metaKeywords":null},"attributes":{"series":"74HCT","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Clock & Timing ICs"],"specifications":{"PLL":"Yes","Type":"Phase Lock Loop (PLL)","Input":"CMOS","Output":"CMOS","Series":"74HCT","Package":"Tape & Reel (TR); Cut Tape (CT)","Mounting Type":"Surface Mount","Package / Case":"16-SOIC (0.154\\\", 3.90mm Width)","Frequency - Max":"38MHz","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 5.5V","Divider/Multiplier":"No/No","Number of Circuits":"1","Ratio - Input:Output":"1:4","Operating Temperature":"-55°C ~ 125°C","Supplier Device Package":"16-SOIC","Differential - Input:Output":"No/No"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.3","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.30000","currency":"USD"},{"qty":10,"price":"$1.16000","currency":"USD"},{"qty":25,"price":"$1.10120","currency":"USD"},{"qty":100,"price":"$0.90450","currency":"USD"},{"qty":250,"price":"$0.84552","currency":"USD"},{"qty":500,"price":"$0.74720","currency":"USD"},{"qty":1250,"price":"$0.58989","currency":"USD"},{"qty":2500,"price":"$0.55650","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/6a11f662d0c048466d8cd73d30c0d38c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum frequency of CD74HCT4046AMT?","answer":"The VCO can be driven up to 38 MHz maximum. This sets the upper limit for the PLL's lock range; the actual capture range depends on the loop filter components you choose."},{"question":"Is CD74HCT4046AMT a replacement for CD4046?","answer":"Functionally similar — both are PLLs with VCO — but the CD74HCT4046AMT uses HCT logic (CMOS with TTL-compatible input thresholds) and operates from 4.5 V to 5.5 V, while the original CD4046 is a full CMOS part with a wider supply range. Verify input thresholds and supply compatibility before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/CD74HCT4046AMT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/CD74HCT4046AMT when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T10:39:33.080Z","lastPublished":"2026-07-16T10:39:33.080Z","indexable":true}}