{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"PCF8574PWR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"PCF8574PWR","canonicalUrl":"https://icboms.com/texas-instruments/PCF8574PWR","factsUrl":"https://icboms.com/api/mcp/products/PCF8574PWR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments PCF8574PWR, 8-bit I²C I/O expander, 100 kHz clock, push-pull outputs, 1 mA source / 25 mA sink, 2.5 V to 6 V supply, -40°C to 85°C, 20-TSSOP package.","salesMarkdown":"## 8-bit I²C GPIO expander in a 20-TSSOP It includes a power-on reset (POR) feature that initializes the outputs to a known state at power-up, and an interrupt output pin signals the host when input levels change. The 20-TSSOP package (4.40 mm width) is a surface-mount footprint common in space-constrained PCBs for industrial control panels, telecom line cards, and sensor hubs. If you need to sink more than 25 mA per pin, budget an external driver or buffer. The 100 kHz I²C clock is the standard-mode speed; for faster bus throughput, consider a 400 kHz-capable expander like the PCF8575.","metaTitle":"Texas Instruments PCF8574PWR I²C I/O Expander, 8-Bit","metaDescription":"Texas Instruments PCF8574PWR 8-bit I²C I/O expander with POR, 100 kHz clock, push-pull outputs, 1 mA source / 25 mA sink per I/O, 2.5 V to 6 V supply, -40°C to","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Interface & Transceivers"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Features":"POR","Interface":"I²C","Output Type":"Push-Pull","Mounting Type":"Surface Mount","Number of I/O":"8","Package / Case":"20-TSSOP (0.173\\\", 4.40mm Width)","Product Status":"Active","Clock Frequency":"100 kHz","lifecycle_stage":"eol_hot","Interrupt Output":"Yes","Voltage - Supply":"2.5V ~ 6V","Base Product Number":"PCF8574","Operating Temperature":"-40°C~85°C","Supplier Device Package":"20-TSSOP","Current - Output Source/Sink":"1mA, 25mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.9500","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/436451875093ef53a6afca337f2de9b8.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/PCF8574PWR/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between PCF8574 and PCF8574PWR?","answer":"The base part number PCF8574 refers to the 8-bit I²C I/O expander family. The PCF8574PWR suffix indicates the 20-TSSOP package and Tape & Reel (TR) / Cut Tape (CT) shipping format. The die and electrical specifications are identical across the package variants; the only difference is the physical footprint and reel packaging."},{"question":"Can PCF8574PWR work with 5V?","answer":"Yes. The supply voltage range is 2.5 V to 6 V, so a 5 V rail is well within the operating limits. The I²C bus logic levels follow VDD, so a 5 V supply means the SDA/SCL lines swing to 5 V — ensure the host I²C controller is 5 V-tolerant or use a level shifter."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/PCF8574PWR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/PCF8574PWR 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}}