{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX7321AEE+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX7321AEE","canonicalUrl":"https://icboms.com/analog-devices/MAX7321AEE","factsUrl":"https://icboms.com/api/mcp/products/MAX7321AEE%2B","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX7321AEE+ I²C I/O expander, 8-bit, 400 kHz, 1.71V-5.5V, open-drain/push-pull outputs, interrupt output, 16-QSOP, tube.","salesMarkdown":"## 8-bit I²C I/O expander with POR and interrupt The MAX7321AEE+ is an 8-bit I/O expander from Analog Devices that communicates over an I²C bus at up to 400 kHz. Each of the eight I/O ports can be configured as an input or output, with outputs selectable as open-drain or push-pull — a feature that lets the same part drive LEDs directly (push-pull) or interface with wired-OR interrupt lines (open-drain). An integrated power-on reset (POR) circuit ensures the outputs come up in a known high-impedance state, preventing unintended glitches on the load during power-up. The interrupt output (INT) signals the host when an input changes state, so the host does not need to poll the I²C bus continuously — useful in battery-powered designs where every microamp counts. Each I/O can source or sink 20 mA, enough to drive a standard LED or a low-power optocoupler directly. The open-drain configuration allows multiple expanders to share an interrupt line without contention. Available in a 16-pin SSOP (3.90 mm body width) and also listed with a 16-QSOP supplier package — both are surface-mount, fine-pitch packages suited for compact PCB layouts. The tube packaging is standard for engineering samples and low-volume production runs.","metaTitle":"MAX7321AEE+ I2C I/O Expander, 8 Port, 400 kHz, 16-QSOP","metaDescription":"MAX7321AEE+ I2C port expander with 8 I/O, 400 kHz clock, 1.71V-5.5V supply, -40°C to 125°C. Active production, ROHS3. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tube","Features":"POR","Interface":"I²C","Output Type":"Open Drain, Push-Pull","Mounting Type":"Surface Mount","Number of I/O":"8","Package / Case":"16-SSOP (0.154\\\", 3.90mm Width)","Clock Frequency":"400 kHz","lifecycle_stage":"eol_hot","Interrupt Output":"Yes","Voltage - Supply":"1.71V ~ 5.5V","Operating Temperature":"-40°C ~ 125°C","Supplier Device Package":"16-QSOP","Current - Output Source/Sink":"20mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.82","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$4.82000","currency":"USD"},{"qty":10,"price":"$4.32700","currency":"USD"},{"qty":25,"price":"$4.09040","currency":"USD"},{"qty":100,"price":"$3.54510","currency":"USD"},{"qty":250,"price":"$3.36328","currency":"USD"},{"qty":500,"price":"$3.01788","currency":"USD"},{"qty":1000,"price":"$2.54520","currency":"USD"},{"qty":2500,"price":"$2.41794","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to the MAX7321AEE+?","answer":"Within the same family, the MAX7320AEE+ is a near pin-compatible sibling — it omits the interrupt output and the push-pull output option, offering only open-drain outputs. If your design requires the INT pin and push-pull drive, the MAX7321AEE+ is the correct choice; if those features are unused, the MAX7320AEE+ may be a lower-cost fit. Both share the same 16-QSOP footprint and I²C address scheme."},{"question":"What compliance documentation does Analog Devices provide for the MAX7321AEE+?","answer":"The device is ROHS3 compliant. Analog Devices typically provides a material declaration and REACH compliance statement on request through the distributor. No UL or IEC certification is listed for this part."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX7321AEE","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX7321AEE 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}}