{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX7318AWG+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX7318AWG~3","canonicalUrl":"https://icboms.com/analog-devices/MAX7318AWG~3","factsUrl":"https://icboms.com/api/mcp/products/MAX7318AWG%2B","rawCanonicalId":null},"summary":{"shortDescription":"Maxim Integrated MAX7318AWG+, 16-bit I²C/SMBus GPIO port expander, 400 kHz clock, push-pull outputs, 31 mA source / 43 mA sink, 2V to 5.5V supply, -40°C to 125°C, 24-SOIC package, Tube.","salesMarkdown":"It operates across a 2V to 5.5V supply range, making it equally at home on 3.3V or 5V logic rails without level shifters. Each pin can source 31 mA or sink 43 mA — enough to drive LEDs, small relays, or signal-level loads directly. The interrupt output (IRQ) signals the host on pin-state changes, so the main MCU doesn't have to poll. With a 400 kHz clock rate, the bus transaction for a full port read or write completes in roughly 40 µs, which is fast enough for front-panel buttons, status LEDs, and sensor-bank multiplexing. ## Industrial temperature range — not just a box-tick The 125°C upper limit covers self-heating inside a sealed enclosure on a hot production floor. If your BOM runs at 85°C ambient with a 20°C rise inside the enclosure, you still have 20°C of margin before the part leaves its rated window. ## Active lifecycle — no LTB scramble needed For production builds, it can be dual-sourced against the PCA9535 family if the design already uses that footprint — the I²C address map and register layout differ, so a firmware change is required, but the pinout is compatible. ## Package and handling notes The 24-SOIC footprint is shared by many 16-bit I²C expanders, so board layout reuse across alternate sources is straightforward. No exposed pad — all dissipation goes through the leads.","metaTitle":"MAX7318AWG+ I²C 16-Bit GPIO Port Expander, 400 kHz","metaDescription":"MAX7318AWG+ 16-bit I²C/SMBus GPIO expander with push-pull outputs, 31mA/43mA source/sink, 2V-5.5V supply, industrial temp range. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Package":"Tube","Features":"POR","Interface":"I²C, SMBus","Output Type":"Push-Pull","Mounting Type":"Surface Mount","Number of I/O":"16","Package / Case":"24-SOIC (0.295\\\", 7.50mm 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-SOIC","Current - Output Source/Sink":"31mA, 43mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.07","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$6.07000","currency":"USD"},{"qty":10,"price":"$5.45000","currency":"USD"},{"qty":25,"price":"$5.15240","currency":"USD"},{"qty":100,"price":"$4.46550","currency":"USD"},{"qty":250,"price":"$4.23648","currency":"USD"},{"qty":500,"price":"$3.80140","currency":"USD"},{"qty":1000,"price":"$3.43500","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to the MAX7318AWG+?","answer":"The PCA9535 from NXP/TI is a pin-compatible 16-bit I²C GPIO expander with the same 24-SOIC footprint and 400 kHz bus speed. The register map and I²C slave address assignment differ, so a firmware port is required, but the hardware layout can remain unchanged."},{"question":"Is the MAX7318AWG+ compatible with 5V logic and industrial temperature ranges?","answer":"Yes."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX7318AWG~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/MAX7318AWG~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}}