{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CD74HC7046AE","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"CD74HC7046AE","canonicalUrl":"https://icboms.com/texas-instruments/CD74HC7046AE","factsUrl":"https://icboms.com/api/mcp/products/CD74HC7046AE","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74HC series Phase Lock Loop (PLL) with VCO and lock detect, CD74HC7046AE, 38 MHz max frequency, 2V to 6V supply, CMOS I/O, 1 circuit, 1:2 ratio, -55°C to 125°C, 16-PDIP, tube.","salesMarkdown":"## PLL with VCO and lock detect — what it does on your board The Texas Instruments CD74HC7046AE is a 74HC-series phase-locked loop (PLL) that integrates a voltage-controlled oscillator (VCO) and a lock-detection circuit on a single chip. It accepts CMOS-level inputs and delivers CMOS-level outputs. The part is designed for clock synchronization, frequency synthesis, and FM demodulation in systems where a clean, phase-locked reference is needed — motor-drive timing, telecom framing, or data-recovery clocking in industrial control. Rated for the full military temperature range of -55°C to 125°C, it fits into avionics, satellite, downhole instrumentation, and outdoor telecom enclosures where the ambient sees extremes. The wide supply range of 2 V to 6 V means it can sit on a 3.3 V or 5 V rail without a separate regulator — one less BOM line. ## 38 MHz maximum frequency — what that means for your design The 38 MHz maximum frequency sets the upper bound for the VCO and phase-detector operation. If your system needs to lock to a reference above that, this part won't close the loop — you'd need a faster PLL such as the 74HCT version or a dedicated high-speed PLL. For most microcontroller clock multiplication, serial data recovery up to 38 MHz, or synthesizing a 38 MHz carrier, it has the headroom. The 1:2 input-to-output ratio means one reference input can generate two related output frequencies, useful for driving separate clock domains from a single source. ## Package and mounting — through-hole for prototyping and long-life builds Housed in a 16-pin PDIP (0.300\" wide, 7.62 mm pitch) with through-hole mounting. This is the classic DIP footprint — sockets readily available, hand-solderable, and preferred for breadboard prototyping. ## Lifecycle and supply — still active, no LTB clock ticking The CD74HC7046AE carries an active lifecycle status and is ROHS3 compliant. The 74HC series has been a workhorse logic family for decades, and TI continues to support it — no need to qualify a substitute for new designs today.","metaTitle":"CD74HC7046AE PLL with VCO and Lock Detect, 38 MHz, 16-PDIP","metaDescription":"CD74HC7046AE is a 74HC-series phase-locked loop with VCO and lock detection. 38 MHz max frequency, 2V-6V supply, -55°C to 125°C. Active, ROHS3.","metaKeywords":null},"attributes":{"series":"74HC","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":"74HC","Package":"Tube","Mounting Type":"Through Hole","Package / Case":"16-DIP (0.300\\\", 7.62mm)","Frequency - Max":"38MHz","lifecycle_stage":"eol_hot","Voltage - Supply":"2V ~ 6V","Divider/Multiplier":"No/No","Number of Circuits":"1","Ratio - Input:Output":"1:2","Operating Temperature":"-55°C ~ 125°C","Supplier Device Package":"16-PDIP","Differential - Input:Output":"No/No"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.91","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.91000","currency":"USD"},{"qty":10,"price":"$2.61100","currency":"USD"},{"qty":25,"price":"$2.46840","currency":"USD"},{"qty":100,"price":"$2.13930","currency":"USD"},{"qty":250,"price":"$2.02964","currency":"USD"},{"qty":500,"price":"$1.82118","currency":"USD"},{"qty":1000,"price":"$1.55250","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/95ac1c8e8ddaf68f854a6c057c4ad625.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum operating frequency of CD74HC7046AE?","answer":"The maximum frequency is 38 MHz. This is the upper limit for the VCO and phase-detector operation. For reference signals above 38 MHz, a different PLL is required."},{"question":"Can CD74HC7046AE replace CD4046?","answer":"The CD74HC7046AE is a 74HC-series PLL with integrated VCO and lock detect, similar in function to the classic CD4046. It operates at a higher maximum frequency (38 MHz vs typically ~1 MHz for the CD4046) and over a wider temperature range (-55°C to 125°C). Pin compatibility depends on the specific CD4046 variant; verify the pinout against your PCB layout before substitution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/CD74HC7046AE","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/CD74HC7046AE 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}}