{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX3949ETE+T","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX3949ETET","canonicalUrl":"https://icboms.com/analog-devices/MAX3949ETET","factsUrl":"https://icboms.com/api/mcp/products/MAX3949ETE%2BT","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX3949ETE+T laser diode driver, 11.3 Gbps data rate, 105 mA bias current, 85 mA modulation current, 2.95 V to 3.63 V supply, 16-TQFN (3x3 mm) surface-mount package, active production, ROHS3 compliant.","salesMarkdown":"## Optical-module driver for 10G+ SFP+ links The MAX3949ETE+T is a single-channel laser diode driver from Analog Devices, designed to drive a laser diode at data rates up to 11.3 Gbps — the rate used in 10G SFP+ and 10GBASE-LR/ER optical transceivers, plus the 8.5 Gbps Fibre Channel standard. It is a direct-fit IC for the transmitter side of a small-form-factor pluggable module where the PCB real estate is tight and the supply rail is 3.3 V nominal. The driver sources a programmable bias current up to 105 mA and a modulation current up to 85 mA. The bias sets the laser's DC operating point above threshold; the modulation current is the AC swing that produces the optical extinction ratio. For a typical 1310 nm FP or DFB laser with a threshold around 10–20 mA, the 105 mA bias ceiling leaves headroom for temperature drift and aging without saturating the laser's power curve. Supply current is 55 mA typical — the driver's own consumption is separate from the bias and modulation currents delivered to the laser, so the total current draw from the 2.95–3.63 V rail is the sum of the three. The 55 mA figure means the driver itself does not dominate the module power budget; the laser's bias and modulation do. ## Package footprint and thermal land Housed in a 16-lead WFQFN with an exposed pad, 3x3 mm body (the supplier device package is called 16-TQFN). The 0.5 mm pitch QFN footprint is standard for SFP+ transmit-side ICs and routes out cleanly on a 4-layer board.","metaTitle":"MAX3949ETE+T Laser Diode Driver, 11.3 Gbps, 16-TQFN","metaDescription":"Analog Devices MAX3949ETE+T laser diode driver, 11.3 Gbps data rate, 105 mA bias, 85 mA modulation, 2.95-3.63 V supply, 16-TQFN, active production, ROHS3","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Type":"Laser Diode Driver","Package":"Tape & Reel (TR); Cut Tape (CT)","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":null,"sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX3949ETET","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX3949ETET when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}