{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"PCAL6408ABSHP","brand":"NXP Semiconductors","brandSlug":"nxp","productSlug":"PCAL6408ABSHP","canonicalUrl":"https://icboms.com/nxp/PCAL6408ABSHP","factsUrl":"https://icboms.com/api/mcp/products/PCAL6408ABSHP","rawCanonicalId":null},"summary":{"shortDescription":"NXP PCAL6408ABSHP 8-bit I²C/SMBus GPIO expander, 400 kHz clock, 1.65 V to 5.5 V supply, open-drain/push-pull outputs, interrupt output, POR, -40°C to 85°C, 16-HVQFN (3x3 mm).","salesMarkdown":"The NXP PCAL6408ABSHP is an 8-bit general-purpose I/O expander that connects to a host controller via an I²C or SMBus interface running at up to 400 kHz. It provides eight configurable I/O pins that can be set as open-drain or push-pull outputs, with a per-pin source/sink capability of 10 mA source and 25 mA sink. A dedicated interrupt output signals the host when an input changes, reducing polling overhead. The wide supply range of 1.65 V to 5.5 V lets it bridge 1.8 V and 3.3 V logic domains on the same bus. The POR (Power-On Reset) feature ensures the outputs start in a known state after power-up, which matters for driving relays or LEDs that must not glitch. ## Supply voltage and I2C compatibility The 1.65 V minimum supply means the PCAL6408ABSHP works directly on a 1.8 V I²C bus without a level shifter — a common requirement in battery-powered IoT nodes and low-voltage SoC designs. At the 5.5 V maximum it also mates with legacy 5 V logic. The 400 kHz clock matches standard-mode I²C and SMBus; no speed downgrade needed. The small footprint suits space-constrained boards in portable instruments or sensor modules.","metaTitle":"NXP PCAL6408ABSHP I2C/SMBus GPIO Expander, 8 I/O, 400 kHz","metaDescription":"NXP PCAL6408ABSHP 8-bit GPIO expander with I2C/SMBus interface, 400 kHz clock, 1.65V–5.5V supply, -40°C to 85°C, 16-HVQFN. Active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Features":"POR","Interface":"I²C, SMBus","Output Type":"Open Drain, Push-Pull","Mounting Type":"Surface Mount","Number of I/O":"8","Package / Case":"16-VFQFN Exposed Pad","Clock Frequency":"400 kHz","lifecycle_stage":"eol_hot","Interrupt Output":"Yes","Voltage - Supply":"1.65V ~ 5.5V","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"16-HVQFN (3x3)","Current - Output Source/Sink":"10mA, 25mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.51","priceTiers":[{"qty":1,"price":"$1.51000","currency":"USD"},{"qty":10,"price":"$1.35200","currency":"USD"},{"qty":25,"price":"$1.28320","currency":"USD"},{"qty":100,"price":"$1.05420","currency":"USD"},{"qty":250,"price":"$0.98544","currency":"USD"},{"qty":500,"price":"$0.87084","currency":"USD"},{"qty":1000,"price":"$0.68751","currency":"USD"},{"qty":2500,"price":"$0.64167","currency":"USD"},{"qty":6000,"price":"$0.60959","currency":"USD"},{"qty":12000,"price":"$0.58667","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/5fff773aee52625a35dd277d620fa1ec.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/PCAL6408ABSHP/alternatives.json"},"ai":{"faq":[{"question":"Does PCAL6408ABSHP support 1.8V I2C?","answer":"Yes. The supply voltage range of 1.65 V to 5.5 V includes 1.8 V, so the part operates directly on a 1.8 V I²C bus without external level translation."},{"question":"What is the I2C address range for PCAL6408ABSHP?","answer":"The I²C address is set by the hardware pin strapping on the device; the datasheet details the programmable address options. The interface supports standard 7-bit addressing."},{"question":"What is the footprint of PCAL6408ABSHP?","answer":"The package is a 16-lead HVQFN measuring 3x3 mm (supplier device package 16-HVQFN). The exposed pad is on the bottom for thermal and electrical connection."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/nxp/PCAL6408ABSHP","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/nxp/PCAL6408ABSHP 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}}