{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"PCA9534DW","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"PCA9534DW","canonicalUrl":"https://icboms.com/texas-instruments/PCA9534DW","factsUrl":"https://icboms.com/api/mcp/products/PCA9534DW","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments PCA9534DW I²C/SMBus I/O expander, 8-bit, 400 kHz clock, 2.3-5.5 V supply, 16-SOIC package, -40 to 85°C operating temperature.","salesMarkdown":"## I²C I/O expander for GPIO-limited designs The PCA9534DW from Texas Instruments is an 8-bit I²C and SMBus I/O expander that adds eight general-purpose I/O pins to a microcontroller or processor with a limited GPIO count. It communicates over a 400 kHz I²C bus, freeing up processor pins for other functions. Each I/O pin can be individually configured as input or output, with push-pull outputs capable of sourcing 10 mA and sinking 25 mA. An interrupt output (INT) signals the host when an input changes state, reducing polling overhead. ## Package and board integration Housed in a 16-SOIC package with a 7.50 mm body width (0.295-inch), the PCA9534DW fits standard SOIC-16 footprints. The wide body provides adequate clearance for manual probing and rework, and the surface-mount package supports automated assembly without special handling. The tube packaging is typical for prototype and low-volume builds; for reel packaging check the alternate order code PCA9534DWR.","metaTitle":"PCA9534DW I²C I/O Expander, 8-Bit, 16-SOIC, TI","metaDescription":"Texas Instruments PCA9534DW I²C I/O expander, 8-bit, 400 kHz, 2.3-5.5 V, -40 to 85°C, 16-SOIC. Active production, ROHS3 compliant. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Package":"Tube","Features":"POR","Interface":"I²C, SMBus","Output Type":"Push-Pull","Mounting Type":"Surface Mount","Number of I/O":"8","Package / Case":"16-SOIC (0.295\\\", 7.50mm Width)","Clock Frequency":"400 kHz","lifecycle_stage":"eol_hot","Interrupt Output":"Yes","Voltage - Supply":"2.3V ~ 5.5V","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"16-SOIC","Current - Output Source/Sink":"10mA, 25mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.51","priceTiers":[{"qty":1,"price":"$2.51000","currency":"USD"},{"qty":10,"price":"$2.25300","currency":"USD"},{"qty":25,"price":"$2.12520","currency":"USD"},{"qty":100,"price":"$1.81080","currency":"USD"},{"qty":250,"price":"$1.70024","currency":"USD"},{"qty":500,"price":"$1.48772","currency":"USD"},{"qty":1000,"price":"$1.23267","currency":"USD"},{"qty":2500,"price":"$1.20300","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/76e7d4e2a34affb27509337d1780d3c2.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/PCA9534DW/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/PCA9534DW","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/PCA9534DW 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}}