{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"PCA6408AHKX","brand":"NXP Semiconductors","brandSlug":"nxp","productSlug":"PCA6408AHKX","canonicalUrl":"https://icboms.com/nxp/PCA6408AHKX","factsUrl":"https://icboms.com/api/mcp/products/PCA6408AHKX","rawCanonicalId":null},"summary":{"shortDescription":"NXP Semiconductors PCA6408AHKX I2C/SMBus I/O Expander, 8-bit, 400 kHz clock, Push-Pull output, 1.65V-5.5V supply, 16-XFQFN package, Tape & Reel.","salesMarkdown":"## 8-bit I/O expander for I2C and SMBus control buses The NXP PCA6408AHKX is an 8-bit I/O expander that connects to a host controller via I2C or SMBus at clock rates up to 400 kHz. It provides eight push-pull GPIOs, each capable of sourcing 10 mA or sinking 25 mA, sufficient to drive LEDs or small relays directly without external buffers. Housed in a 16-lead XFQFN package (1.8 mm × 2.6 mm body, 0.40 mm pitch). ## Interrupt and power-on-reset features Includes a dedicated interrupt output (INT) that asserts when any input changes state, eliminating the need for polling. The integrated power-on-reset (POR) ensures the I/O ports start in a known high-impedance state at power-up, preventing unintended glitches on downstream loads.","metaTitle":"NXP PCA6408AHKX I2C/SMBus I/O Expander, 8-bit, 400 kHz","metaDescription":"NXP PCA6408AHKX 8-bit I/O expander, I2C/SMBus interface up to 400 kHz, 1.65V-5.5V supply, 16-XQFN package. Active production, RoHS3 compliant. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"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":"8","Package / Case":"16-XFQFN","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-XQFN (1.8x2.6)","Current - Output Source/Sink":"10mA, 25mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.46","stockQuantity":30,"priceTiers":[{"qty":1,"price":"$1.46000","currency":"USD"},{"qty":10,"price":"$1.30400","currency":"USD"},{"qty":25,"price":"$1.23720","currency":"USD"},{"qty":100,"price":"$1.01630","currency":"USD"},{"qty":250,"price":"$0.95004","currency":"USD"},{"qty":500,"price":"$0.83956","currency":"USD"},{"qty":1000,"price":"$0.66281","currency":"USD"},{"qty":4000,"price":"$0.61863","currency":"USD"},{"qty":8000,"price":"$0.58769","currency":"USD"},{"qty":12000,"price":"$0.56560","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/2d0e006ccf2f17b3476c6169fe43cb6c.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/nxp/PCA6408AHKX","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/nxp/PCA6408AHKX 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}}