{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX7318AUG+T","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX7318AUGT","canonicalUrl":"https://icboms.com/analog-devices/MAX7318AUGT","factsUrl":"https://icboms.com/api/mcp/products/MAX7318AUG%2BT","rawCanonicalId":null},"summary":{"shortDescription":"Maxim Integrated MAX7318AUG+T I²C/SMBus GPIO Expander, 16 I/O, Push-Pull Output, 400 kHz Clock, 2V-5.5V Supply, -40°C to 125°C, 24-TSSOP Package, ROHS3 Compliant.","salesMarkdown":"## What this I²C GPIO expander brings to the board The Maxim Integrated MAX7318AUG+T is a 16-bit I²C- and SMBus-compatible GPIO expander in a 24-TSSOP package. It provides 16 push-pull I/O ports that can be configured as inputs or outputs, with a built-in power-on reset (POR) that forces all ports to a known state at startup. The part operates across a 2V to 5.5V supply range, making it suitable for both 3.3V and 5V logic systems, and is rated for the full -40°C to 125°C industrial temperature range. ## Supply voltage and logic-level compatibility The 2V to 5.5V supply range means this expander can sit on a 3.3V or 5V rail without a level shifter on the I²C bus, as long as the bus voltage matches the VCC. The push-pull outputs source 31 mA and sink 43 mA per pin, enough to drive LEDs directly or pull relay coils through a transistor — just watch the total package dissipation when loading many outputs simultaneously. ## Temperature grade and where it fits Rated for -40°C to 125°C, this part is at home in automotive cabin modules, industrial PLC I/O cards, outdoor telecom gear, and any enclosure that sees seasonal extremes. The 24-TSSOP footprint is compact but hand-solderable with a fine tip; the 0.65 mm pitch calls for a steady hand or a reflow profile. ## Clock speed and bus timing The I²C interface runs at 400 kHz (fast mode), which is the standard ceiling for most microcontroller I²C peripherals. At this speed, a 16-bit read or write takes roughly 50 µs — fast enough for polling buttons, toggling LEDs, or reading DIP switches, but not for high-speed data streaming. The interrupt output (INT) lets the host avoid polling, waking only when an input changes. ## Lifecycle and sourcing posture The MAX7318AUG+T carries an Active lifecycle status from the manufacturer, with ROHS3 compliance.","metaTitle":"MAX7318AUG+T I2C GPIO Expander, 16 I/O, 400 kHz, 24-TSSOP","metaDescription":"MAX7318AUG+T I2C/SMBus GPIO expander with 16 push-pull I/O, 400 kHz clock, 2V-5.5V supply, -40°C to 125°C. Active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Features":"POR","Interface":"I²C, SMBus","Output Type":"Push-Pull","Mounting Type":"Surface Mount","Number of I/O":"16","Package / Case":"24-TSSOP (0.173\\\", 4.40mm Width)","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-TSSOP","Current - Output Source/Sink":"31mA, 43mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.13","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$6.13000","currency":"USD"},{"qty":10,"price":"$5.50500","currency":"USD"},{"qty":25,"price":"$5.20400","currency":"USD"},{"qty":100,"price":"$4.51020","currency":"USD"},{"qty":250,"price":"$4.27888","currency":"USD"},{"qty":500,"price":"$3.83942","currency":"USD"},{"qty":1000,"price":"$3.23806","currency":"USD"},{"qty":2500,"price":"$3.07616","currency":"USD"}]},"links":{"datasheetUrl":"https://datasheets.maximintegrated.com/en/ds/MAX7318.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can MAX7318AUG+T be used with 5V logic?","answer":"Yes, the 2V to 5.5V supply range includes 5V operation. The I²C bus and all I/O pins are rated for the full supply voltage, so 5V logic levels are supported directly."},{"question":"What is the maximum I²C clock frequency of MAX7318AUG+T?","answer":"The I²C interface supports a 400 kHz clock frequency, which is standard fast-mode I²C."},{"question":"Is there a pin-compatible alternative to MAX7318AUG+T?","answer":"The MAX7318AUG+T is part of Maxim's 16-bit I²C GPIO expander family. Pin-compatible siblings include the MAX7318AUG+ (tube) and the MAX7318AUG/V+ (automotive-qualified variant). The PCA9535 from NXP is a functional equivalent but check the pinout and register map for drop-in compatibility."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX7318AUGT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX7318AUGT when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}