{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CD74HC7266E","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"CD74HC7266E","canonicalUrl":"https://icboms.com/texas-instruments/CD74HC7266E","factsUrl":"https://icboms.com/api/mcp/products/CD74HC7266E","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74HC series, CD74HC7266E, XNOR (Exclusive NOR) gate, 4 circuits, 2 inputs per gate, through-hole 14-DIP (0.300\", 7.62mm), supply 2V to 6V, output current 5.2mA/5.2mA, propagation delay 30ns @ 6V/50pF, operating temperature -55°C to 125°C.","salesMarkdown":"## XNOR gate — equality checker for harsh environments The Texas Instruments CD74HC7266E is a quad 2-input XNOR (Exclusive NOR) gate from the 74HC high-speed CMOS logic family. An XNOR output goes HIGH when both inputs match — it is the fundamental building block for digital equality detection, controlled inversion, and parity-check logic. With four independent gates in a single 14-DIP package, this part consolidates board-level compare functions into one DIP footprint. Rated across the full military temperature range of -55°C to 125°C, this is not a commercial or industrial-grade gate. It is specified for designs that must function reliably in avionics, satellite, missile guidance, or downhole instrumentation where the ambient temperature swings well beyond the -40°C to 85°C industrial band. The 14-DIP through-hole package is a natural fit for prototyping, socketed breadboards, and legacy-system repair — not for high-volume SMT assembly. ## Supply range and logic compatibility The 2V to 6V supply range means the CD74HC7266E can be powered from a 3.3V or 5V rail directly, without a level translator at the supply pin. The input logic levels scale with VCC: at 5V, a LOW is typically below 1.8V and a HIGH above 1.5V, which is compatible with standard 5V CMOS and TTL families. For a 3.3V system, the thresholds shift proportionally — still cleanly driven by a 3.3V microcontroller output. Each output sources or sinks 5.2mA — enough to drive a single LS TTL load or a low-power LED indicator, but not a relay coil or high-fanout bus. For heavier loads, buffer the output with a discrete transistor or a dedicated line driver. ## 30 ns propagation delay — timing budget context The 30ns maximum propagation delay at 6V and 50pF load (typical is lower) places this gate in the moderate-speed tier. It is fast enough for control logic, status decoding, and clock-enable generation at a few MHz, but not for high-speed data paths running above 10 MHz. When cascading several gates in a critical timing path, sum the delays against your clock period — 30ns per stage adds up quickly. ## Lifecycle and sourcing reality The CD74HC7266E carries an Active lifecycle status and is ROHS3 compliant. The 14-DIP through-hole package ships in Tube form.","metaTitle":"CD74HC7266E Texas Instruments 74HC XNOR Gate, 14-DIP","metaDescription":"CD74HC7266E quad 2-input XNOR gate from the 74HC family. Wide 2V–6V supply, 5.2mA output drive, 30ns prop delay at 6V. Through-hole 14-DIP, military temp range.","metaKeywords":null},"attributes":{"series":"74HC","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Series":"74HC","Package":"Tube","Logic Type":"XNOR (Exclusive NOR)","Mounting Type":"Through Hole","Package / Case":"14-DIP (0.300\\\", 7.62mm)","lifecycle_stage":"eol_hot","Number of Inputs":"2","Voltage - Supply":"2V ~ 6V","Number of Circuits":"4","Operating Temperature":"-55°C ~ 125°C","Input Logic Level - Low":"0.5V ~ 1.8V","Supplier Device Package":"14-PDIP","Input Logic Level - High":"1.5V ~ 4.2V","Current - Quiescent (Max)":"2 µA","Current - Output High, Low":"5.2mA, 5.2mA","Max Propagation Delay @ V, Max CL":"30ns @ 6V, 50pF"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.23","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.23000","currency":"USD"},{"qty":10,"price":"$1.99900","currency":"USD"},{"qty":25,"price":"$1.88600","currency":"USD"},{"qty":100,"price":"$1.60690","currency":"USD"},{"qty":250,"price":"$1.50884","currency":"USD"},{"qty":500,"price":"$1.32022","currency":"USD"},{"qty":1000,"price":"$1.09390","currency":"USD"},{"qty":2500,"price":"$1.06756","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/795392e79689acd50e17282318bfae1d.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is CD74HC7266E compatible with 5V logic?","answer":"Yes. At a 5V supply, the input LOW threshold is 0.5V to 1.8V and the HIGH threshold is 1.5V to 4.2V, which is directly compatible with standard 5V CMOS and TTL outputs."},{"question":"What is the difference between CD74HC7266E and CD74HCT7266E?","answer":"The CD74HCT variant is TTL-compatible at the input thresholds, while the HC variant uses CMOS-level thresholds that scale with VCC. For a 5V-only system with TTL outputs, the HCT version is a drop-in; for mixed 3.3V/5V designs, the HC version offers wider supply flexibility."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/CD74HC7266E","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/CD74HC7266E 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}}