{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX7318ATG+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX7318ATG~3","canonicalUrl":"https://icboms.com/analog-devices/MAX7318ATG~3","factsUrl":"https://icboms.com/api/mcp/products/MAX7318ATG%2B","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX7318ATG+, 16-bit I²C/SMBus GPIO expander, 400 kHz clock, 2V to 5.5V supply, push-pull outputs, interrupt output, POR, -40°C to 125°C, 24-TQFN (4x4 mm), ROHS3.","salesMarkdown":"## 16-bit I²C/SMBus GPIO expander for board-level I/O scaling The MAX7318ATG+ from Analog Devices (formerly Maxim Integrated) is a 16-bit GPIO expander that communicates over an I²C-compatible (SMBus) two-wire interface at up to 400 kHz. It provides 16 push-pull I/O lines, each capable of sourcing 31 mA and sinking 43 mA, enough to drive LEDs, small relays, or signal-level loads directly without external buffer stages. On-chip POR (power-on reset) ensures the outputs assume a known state at power-up, and the interrupt output (INT) signals the host MCU on any input change, eliminating constant polling and reducing bus traffic. The push-pull output structure eliminates the need for external pull-up resistors on output pins, simplifying board layout and reducing BOM count. This temperature grade covers engine-bay electronics, outdoor base stations, and factory-floor sensor hubs. The 24-TQFN (4x4 mm) package with exposed pad aids thermal dissipation in high-temperature enclosures. ROHS3 compliant.","metaTitle":"MAX7318ATG+ I²C/SMBus GPIO Expander, 16 I/O, 400 kHz","metaDescription":"MAX7318ATG+ 16-bit I²C/SMBus GPIO expander from Analog Devices. 2V to 5.5V supply, 400 kHz clock, -40°C to 125°C. Push-pull outputs, interrupt, POR.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Package":"Tube","Features":"POR","Interface":"I²C, SMBus","Output Type":"Push-Pull","Mounting Type":"Surface Mount","Number of I/O":"16","Package / Case":"24-WFQFN Exposed Pad","Clock Frequency":"400 kHz","lifecycle_stage":"eol_hot","Interrupt Output":"Yes","Voltage - Supply":"2V ~ 5.5V","Operating Temperature":"-40°C ~ 125°C","Supplier Device Package":"24-TQFN (4x4)","Current - Output Source/Sink":"31mA, 43mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.15","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$6.15000","currency":"USD"},{"qty":10,"price":"$5.52700","currency":"USD"},{"qty":25,"price":"$5.22520","currency":"USD"},{"qty":100,"price":"$4.52840","currency":"USD"},{"qty":250,"price":"$4.29612","currency":"USD"},{"qty":500,"price":"$3.85490","currency":"USD"},{"qty":1000,"price":"$3.25113","currency":"USD"},{"qty":2500,"price":"$3.08857","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"Is MAX7318ATG+ compatible with 5V logic?","answer":"Yes. The MAX7318ATG+ operates from a 2V to 5.5V supply, so running it at 5V makes its I/O and I²C/SMBus interface fully 5V-logic compatible. At 3.3V supply, it works directly with 3.3V microcontrollers."},{"question":"What is the closest pin-compatible alternative to MAX7318ATG+?","answer":"Within the same family, the MAX7318ATG+ is a 16-bit I²C/SMBus GPIO expander. A direct functional equivalent would be the MAX7317 (SPI version) or the MAX7318 in a different package variant, but for pin-compatible I²C 16-bit port expanders, the PCA9535 from NXP or TCA9535 from TI offer similar register maps and pinouts — verify the address and interrupt behavior against your firmware before substituting."},{"question":"What is the lead time for MAX7318ATG+?","answer":"Lead time is confirmed at RFQ time based on current factory and distributor stock positions. Submit an RFQ for the specific quantity and delivery window you need."},{"question":"Can MAX7318ATG+ be used with 3.3V microcontrollers?","answer":"Yes. The 2V to 5.5V supply range includes 3.3V. At 3.3V supply, the I²C bus and I/O levels are directly compatible with 3.3V MCU logic."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX7318ATG~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/MAX7318ATG~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}}