{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LF347D","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LF347D","canonicalUrl":"https://icboms.com/texas-instruments/LF347D","factsUrl":"https://icboms.com/api/mcp/products/LF347D","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics LF347D, JFET-input quad operational amplifier, 14-SOIC surface mount, 3 MHz gain bandwidth, 13V/µs slew rate, 7 V to 36 V supply, 0°C to 70°C.","salesMarkdown":"## What this quad JFET op-amp is and where it lands on the bench The STMicroelectronics LF347D is a JFET-input quad operational amplifier in a 14-SOIC package. It gives you four independent op-amp channels with a 3 MHz gain-bandwidth product and a 13V/µs slew rate — enough to handle audio-band signals and moderate-speed analog processing without the output rounding off. The JFET inputs keep input bias current at 50 pA, which matters when you're buffering high-impedance sources like photodiodes or piezo sensors. Supply range runs from 7 V to 36 V total, so it fits both single-rail and split-rail designs common in bench instruments, audio mixers, and industrial signal conditioning. ## Active production — no LTB scramble The LF347D carries an Active lifecycle status and is ROHS3 compliant. That means ST is still making it, there's no last-time-buy clock ticking, and you can qualify it into a new BOM without worrying about an imminent EOL notice. For repair stock, that's the difference between ordering a fresh reel and hunting down NOS on the broker market. ## SOIC-14 footprint — fits the board without re-spinning The 14-SOIC (0.154\", 3.90 mm width) body is a standard narrow SOIC footprint. The 40 mA per-channel output current is enough to drive a headphone amp or the input of an ADC.","metaTitle":"STMicroelectronics LF347D JFET Quad Op-Amp, 3 MHz GBW","metaDescription":"LF347D JFET-input quad op-amp in SOIC-14. 3 MHz GBW, 13V/µs slew rate, 50 pA input bias. Active production, ROHS3 compliant. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Package":"Tube","Slew Rate":"13V/µs","Mounting Type":"Surface Mount","Amplifier Type":"J-FET","Package / Case":"14-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Current - Supply":"8mA (x4 Channels)","Number of Circuits":"4","Current - Input Bias":"50 pA","Operating Temperature":"0°C ~ 70°C (TA)","Gain Bandwidth Product":"3 MHz","Voltage - Input Offset":"5 mV","Supplier Device Package":"14-SOIC","Current - Output / Channel":"40 mA","Voltage - Supply Span (Max)":"36 V","Voltage - Supply Span (Min)":"7 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.97","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.57000","currency":"USD"},{"qty":10,"price":"$3.20500","currency":"USD"},{"qty":25,"price":"$3.03000","currency":"USD"},{"qty":100,"price":"$2.62610","currency":"USD"},{"qty":250,"price":"$2.49144","currency":"USD"},{"qty":500,"price":"$2.23558","currency":"USD"},{"qty":1000,"price":"$2.22338","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/21052a5b4fa4650a1f6eee8b92576c9a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy LF347D and how do I get a price?","answer":"The LF347D is available to order through independent distribution. Submit an RFQ for current pricing and availability — stock levels and price are confirmed at quote time, not published here."},{"question":"What is the difference between LF347 and LF347D?","answer":"The LF347D is the surface-mount SOIC-14 variant of the LF347. The D suffix indicates the SOIC package, while the base LF347 typically comes in a DIP package. Electrically they share the same JFET quad op-amp core with 3 MHz GBW and 13V/µs slew rate."},{"question":"Can I use LF347D in place of TL074?","answer":"Yes, the LF347D is a common pin-compatible replacement for the TL074 in SOIC-14. Both are JFET-input quad op-amps with the same pinout. The LF347D offers a higher slew rate (13V/µs vs 13V/µs typical for TL074 — check the specific TL074 variant) and similar 3 MHz GBW. Verify the supply voltage range and temperature grade match your application."},{"question":"What is LF347D's listed slew rate?","answer":"The LF347D has a slew rate of 13V/µs, which defines how fast the output voltage can change. This is sufficient for audio-frequency signals and moderate-speed analog processing up to roughly 200 kHz full-power bandwidth at 10 V output swing."},{"question":"When sourcing LF347D, what's the closest functional second-source?","answer":"The LF247DT is a close functional sibling with a wider temperature range (-40°C to 105°C) and a slightly higher slew rate of 16 V/µs, but it is not a direct pin-compatible second-source — verify the package and supply voltage before substituting. For a direct drop-in, the TL074 in SOIC-14 is the most common alternative with the same pinout."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LF347D","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LF347D 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}}