{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX4890EETJ+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX4890EETJ","canonicalUrl":"https://icboms.com/analog-devices/MAX4890EETJ","factsUrl":"https://icboms.com/api/mcp/products/MAX4890EETJ%2B","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX4890EETJ+ Ethernet switch, octal SPDT 2:1 multiplexer, 650MHz -3dB bandwidth, 5.5Ohm on-resistance, 3V-3.6V supply, 32-TQFN exposed pad, tube.","salesMarkdown":"## What this octal Ethernet switch does on the board The MAX4890EETJ+ is an octal SPDT (single-pole double-throw) switch, configured as a 2:1 multiplexer/demultiplexer across four channels. Each channel routes one of two differential signal pairs to a common port, making it a LAN switch for 1000BASE-T Ethernet. The -3dB bandwidth of 650MHz comfortably covers the 125MHz fundamental and its harmonics required for Gigabit Ethernet signaling, so the switch does not roll off the eye diagram on a 1000BASE-T link. On-state resistance is 5.5Ohm maximum — low enough that the series impedance does not degrade the return loss budget on a 100-Ohm differential pair, but high enough that the switch should be placed after the magnetics, not between the PHY and the line. ## Supply rail and temperature grade Single supply range is 3V to 3.6V, matching a 3.3V rail common in networking equipment. The part is supplied in tube packaging. For volume orders, reel packaging may be available — confirm the packing option at quote time.","metaTitle":"MAX4890EETJ+ Ethernet Switch, 650MHz, 5.5Ohm, 32-TQFN","metaDescription":"MAX4890EETJ+ octal Ethernet switch from Analog Devices. 650MHz -3dB bandwidth, 5.5Ohm R_on, 4-channel SPDT 2:1 mux. Active, ROHS3 compliant. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Package":"Tube","Features":"Differential Compatibility, LAN, 1000 Base-T","Applications":"Networking","Mounting Type":"Surface Mount","-3db Bandwidth":"650MHz","Package / Case":"32-WFQFN Exposed Pad","Switch Circuit":"SPDT","lifecycle_stage":"eol_hot","Number of Channels":"4","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"32-TQFN (5x5)","On-State Resistance (Max)":"5.5Ohm","Voltage - Supply, Single (V+)":"3V ~ 3.6V","Multiplexer/Demultiplexer Circuit":"2:1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$8.08","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$8.08000","currency":"USD"},{"qty":10,"price":"$7.29600","currency":"USD"},{"qty":25,"price":"$6.95680","currency":"USD"},{"qty":100,"price":"$6.04060","currency":"USD"},{"qty":250,"price":"$5.76912","currency":"USD"},{"qty":500,"price":"$5.26008","currency":"USD"},{"qty":1000,"price":"$4.58136","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/7087a81276d976acd6128689a3b72506.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the MAX4890EETJ+ used for?","answer":"It is an octal SPDT Ethernet switch for 1000BASE-T LAN applications. It routes differential signal pairs between two ports, commonly used for port swapping, redundancy, or test-access in network equipment."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX4890EETJ","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX4890EETJ 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}}