{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX5943AEEE+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX5943AEEE~3","canonicalUrl":"https://icboms.com/analog-devices/MAX5943AEEE~3","factsUrl":"https://icboms.com/api/mcp/products/MAX5943AEEE%2B","rawCanonicalId":null},"summary":{"shortDescription":"Maxim MAX5943AEEE+, N+1 ORing Controller, N-Channel FET drive, 7.5V–37V supply, 1.3 mA supply current, 100 ns turn-off delay, -40°C to 85°C, 16-QSOP package.","salesMarkdown":"The MAX5943AEEE+ is an N+1 ORing controller that drives an external N-channel MOSFET in redundant power-supply ORing configurations. It targets FireWire applications. The 100 ns turn-off delay is the headline speed figure: when the input voltage drops below the output, the controller shuts the external FET in 100 ns, preventing reverse current that could collapse the output rail. That speed matters for hot-swap and redundant-supply designs where millisecond delays cause bus droop. Housed in a 16-pin QSOP (3.90 mm body width, 0.154\" pitch), the surface-mount package fits dense PCB layouts. The supplier device package is 16-QSOP, a common footprint for ORing controllers in this class.","metaTitle":"MAX5943AEEE+ N+1 ORing Controller, 7.5V–37V, 100ns turn-off","metaDescription":"Maxim MAX5943AEEE+ N+1 ORing Controller for FireWire, 7.5V–37V supply, 1.3 mA quiescent, 100 ns turn-off, -40°C to 85°C, 16-QSOP.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Type":"N+1 ORing Controller","Package":"Tube","FET Type":"N-Channel","Applications":"FireWire®","Mounting Type":"Surface Mount","Package / Case":"16-SSOP (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Current - Supply":"1.3 mA","Delay Time - OFF":"100 ns","Voltage - Supply":"7.5V ~ 37V","Internal Switch(s)":"No","Ratio - Input:Output":"N:1","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"16-QSOP"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.54","priceTiers":[{"qty":1,"price":"$5.54000","currency":"USD"},{"qty":10,"price":"$4.97600","currency":"USD"},{"qty":25,"price":"$4.70400","currency":"USD"},{"qty":100,"price":"$4.07690","currency":"USD"},{"qty":250,"price":"$3.86780","currency":"USD"},{"qty":500,"price":"$3.47056","currency":"USD"},{"qty":1000,"price":"$2.92698","currency":"USD"},{"qty":2500,"price":"$2.78063","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a883e4fc0dcc789211deb18cd293722b.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/MAX5943AEEE%2B/alternatives.json"},"ai":{"faq":[{"question":"What is the MAX5943AEEE+ used for?","answer":"It is an N+1 ORing controller for redundant power-supply ORing, primarily in FireWire (IEEE 1394) applications. It drives an external N-channel MOSFET to replace a Schottky diode, reducing forward drop and power dissipation."},{"question":"Is MAX5943AEEE+ compatible with 12V systems?","answer":"Yes — the supply range is 7.5V to 37V, so it covers 12V and 24V rails without issue."},{"question":"What is the difference between MAX5943AEEE+ and MAX5943BEEE+?","answer":"The difference lies in the turn-off threshold and timing; the 'A' variant is the standard-speed version with 100 ns turn-off, while the 'B' variant targets a different threshold. Both are pin-compatible in the same 16-QSOP footprint."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX5943AEEE~3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX5943AEEE~3 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}