{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX3949ETE+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX3949ETE","canonicalUrl":"https://icboms.com/analog-devices/MAX3949ETE","factsUrl":"https://icboms.com/api/mcp/products/MAX3949ETE%2B","rawCanonicalId":null},"summary":{"shortDescription":"Maxim Integrated MAX3949ETE+, Laser Diode Driver, 11.3 Gbps, 105 mA bias, 85 mA modulation, 2.95V–3.63V supply, -40°C to 95°C, 16-WFQFN Exposed Pad (16-TQFN 3x3), Tube, Surface Mount, ROHS3 compliant, Active.","salesMarkdown":"## 11.3 Gbps laser diode driver for SFP+ optical modules The Maxim Integrated MAX3949ETE+ is a single-channel laser diode driver rated for 11.3 Gbps operation, designed to drive a differential-modulated laser in 10G SFP+ optical transceivers. It delivers a bias current up to 105 mA and a modulation current up to 85 mA, with a supply range of 2.95 V to 3.63 V. The part is specified over -40°C to 95°C, suiting it for industrial-temperature telecom and datacom equipment where the optics cage sees ambient heat from adjacent line cards. ## Package and rework — 16-TQFN with exposed pad Housed in a 16-lead WFQFN with an exposed pad (3 mm x 3 mm TQFN footprint), this package is a standard for high-speed laser drivers where the thermal pad must be soldered to a ground-plane via array to pull heat out of the die. The exposed pad is the primary thermal path — without a proper via stitch under the pad, junction temperature climbs fast at 85 mA modulation continuous. It is an MSL 1 part out of the bag, so no bake is needed before reflow if the sealed pouch is intact. ## Lifecycle and sourcing reality The MAX3949ETE+ carries an Active product status per the manufacturer, with ROHS3 compliance. No immediate obsolescence risk, but as with any high-speed analog IC, it is worth checking the manufacturer's PCN page annually for die shrinks or assembly site changes that could affect RF performance. ## What the modulation and bias ratings mean for the BOM The 105 mA bias current ceiling and 85 mA modulation current define the laser diode types this driver can handle. For a typical 10Gbps DFB laser, the MAX3949ETE+ has headroom.","metaTitle":"MAX3949ETE+ Laser Diode Driver, 11.3Gbps, 16-TQFN","metaDescription":"MAX3949ETE+ laser diode driver from Maxim Integrated. 11.3 Gbps data rate, 105 mA bias, 85 mA modulation. 2.95V to 3.63V supply. -40°C to 95°C. Active, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"Laser Diode Driver","Package":"Tube","Data Rate":"11.3Gbps","Mounting Type":"Surface Mount","Current - Bias":"105 mA","Package / Case":"16-WFQFN Exposed Pad","lifecycle_stage":"eol_hot","Current - Supply":"55 mA","Voltage - Supply":"2.95V ~ 3.63V","Number of Channels":"1","Current - Modulation":"85mA","Operating Temperature":"-40°C ~ 95°C","Supplier Device Package":"16-TQFN (3x3)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.14","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$7.14000","currency":"USD"},{"qty":10,"price":"$6.44900","currency":"USD"},{"qty":25,"price":"$6.14920","currency":"USD"},{"qty":100,"price":"$5.33950","currency":"USD"},{"qty":250,"price":"$5.09948","currency":"USD"},{"qty":500,"price":"$4.64954","currency":"USD"},{"qty":1000,"price":"$4.04960","currency":"USD"},{"qty":2500,"price":"$3.89961","currency":"USD"}]},"links":{"datasheetUrl":"https://datasheets.maximintegrated.com/en/ds/MAX3949.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the data rate of MAX3949ETE+?","answer":"The MAX3949ETE+ is rated for 11.3 Gbps operation, covering 10G SFP+ and 10G Fibre Channel line rates with margin."},{"question":"What is the difference between MAX3949ETE+ and MAX3949ETE?","answer":"The MAX3949ETE+ and MAX3949ETE are the same die and package; the '+' suffix indicates ROHS3 compliance (lead-free). The non-plus variant is not ROHS3 compliant. Functionally and pin-compatibly identical."},{"question":"Is MAX3949ETE+ compatible with 10Gbps SFP+ modules?","answer":"Yes, the 11.3 Gbps data rate covers 10G SFP+ LRM, SR, and LR optical modules. The bias and modulation currents are well within the typical drive requirements for 10Gbps DFB and VCSEL lasers used in SFP+ form factors."},{"question":"What is the typical application of MAX3949ETE+?","answer":"The MAX3949ETE+ is a laser diode driver for 10G SFP+ optical transceivers, 10G Fibre Channel modules, and other 11.3 Gbps optical links in telecom and datacom equipment. It operates over -40°C to 95°C, suiting it for outdoor and industrial-temperature environments."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX3949ETE","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX3949ETE 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}}