{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CD74HC243E","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"CD74HC243E","canonicalUrl":"https://icboms.com/texas-instruments/CD74HC243E","factsUrl":"https://icboms.com/api/mcp/products/CD74HC243E","rawCanonicalId":null},"summary":{"shortDescription":"74HC series, CD74HC243E, Transceiver Non-Inverting, 3-State, 2V-6V supply, 1 element, 4 bits per element, 7.8mA output, -55°C to 125°C, 14-DIP (0.300\", 7.62mm), Through Hole, Tube.","salesMarkdown":"## What the scorch mark tells you — CD74HC243E on the repair bench The Texas Instruments CD74HC243E is a 74HC-series non-inverting transceiver with 3-state outputs, packed in a 14-pin DIP that fits the old through-hole sockets you still find on industrial controller boards from the 90s and early 2000s. ## Output drive — 7.8mA each way The 7.8mA output current high and low is modest by today's bus-driver standards — you're not going to fan out to a dozen CMOS loads without seeing edge slowdown. But for a single backplane slot, a ribbon-cable handshake, or driving the data lines between two legacy cards, it's adequate. The 3-state outputs let you wire-OR multiple transceivers on a shared bus without contention, as long as you sequence the output enables properly. ## Through-hole DIP — the legacy repair angle The 14-DIP (0.300\", 7.62mm) package is the reason this part still gets pulled from stock. When a 20-year-old PLC I/O card or a telecom line card loses its bus transceiver, you're not re-spinning the PCB — you're desoldering the dead DIP and dropping in a replacement. The 14-PDIP supplier package footprint is standard; any repair tech with a solder sucker and a steady hand can swap it in five minutes. No hot-air rework station needed, no BGA underfill to worry about. ## Lifecycle status — still an active line item For a repair depot or a long-life industrial product that qualified this transceiver a decade ago, that's the difference between a straightforward BOM line and a frantic broker search. The 74HC family has been in production for decades, and this part is still on the factory price list.","metaTitle":"CD74HC243E 74HC Transceiver, Non-Inverting, 2V-6V, 14-DIP","metaDescription":"CD74HC243E 74HC series non-inverting transceiver with 3-state outputs, 2V-6V supply, -55°C to 125°C range, 14-DIP package. Active, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":"74HC","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Series":"74HC","Package":"Tube","Logic Type":"Transceiver, Non-Inverting","Output Type":"3-State","Mounting Type":"Through Hole","Package / Case":"14-DIP (0.300\\\", 7.62mm)","lifecycle_stage":"eol_hot","Voltage - Supply":"2V ~ 6V","Number of Elements":"1","Operating Temperature":"-55°C ~ 125°C (TA)","Supplier Device Package":"14-PDIP","Current - Output High, Low":"7.8mA, 7.8mA","Number of Bits per Element":"4"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.92","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.92000","currency":"USD"},{"qty":10,"price":"$0.80800","currency":"USD"},{"qty":25,"price":"$0.75920","currency":"USD"},{"qty":100,"price":"$0.61950","currency":"USD"},{"qty":250,"price":"$0.57544","currency":"USD"},{"qty":500,"price":"$0.48972","currency":"USD"},{"qty":1000,"price":"$0.39178","currency":"USD"},{"qty":2500,"price":"$0.35505","currency":"USD"},{"qty":5000,"price":"$0.34650","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/99a5d50ec14907592e6b01518d2227de.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the function of CD74HC243E?","answer":"It is a non-inverting transceiver with 3-state outputs — one element, four bits wide. It buffers and directs data bidirectionally between two buses, with the outputs able to go high-impedance to allow other drivers to share the line."},{"question":"Are there alternatives to CD74HC243E?","answer":"If you need the wider supply range and extended temperature, the 74HC part is the one to stick with."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/CD74HC243E","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/CD74HC243E 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}}