{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"PCF8574DW","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"PCF8574DW","canonicalUrl":"https://icboms.com/texas-instruments/PCF8574DW","factsUrl":"https://icboms.com/api/mcp/products/PCF8574DW","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments PCF8574DW I2C I/O expander, 8-bit, 16-SOIC (0.295\", 7.50mm Width), Tube, 2.5V~6V supply, 100 kHz clock, -40°C~85°C.","salesMarkdown":"## 8-bit I²C I/O expander in 16-SOIC The Texas Instruments PCF8574DW is an 8-bit I/O expander that communicates over the I²C bus, giving a microcontroller eight extra push-pull I/O lines without adding more pins. ## Output drive and interrupt Each I/O pin can source 1 mA or sink 25 mA — enough to light a standard LED directly (with a series resistor) or drive a small relay coil through a transistor. An interrupt output (INT) is available, so the expander can alert the host MCU when an input changes without the MCU having to poll the I²C bus continuously. The POR (power-on reset) feature ensures the I/O pins start in a known high-impedance state after the supply comes up, preventing unintended glitches on connected loads.","metaTitle":"TI PCF8574DW I2C I/O Expander, 8-bit, 16-SOIC","metaDescription":"Texas Instruments PCF8574DW I2C 8-bit I/O expander, 16-SOIC, 2.5-6V supply, 100 kHz clock, active production, RoHS3 compliant. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Interface & Transceivers"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tube","Features":"POR","Interface":"I²C","Output Type":"Push-Pull","Mounting Type":"Surface Mount","Number of I/O":"8","Package / Case":"16-SOIC (0.295\\\", 7.50mm 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":"16-SOIC","Current - Output Source/Sink":"1mA, 25mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.3400","priceTiers":[{"qty":1,"price":"$2.34000","currency":"USD"},{"qty":10,"price":"$2.10400","currency":"USD"},{"qty":25,"price":"$1.98480","currency":"USD"},{"qty":100,"price":"$1.69110","currency":"USD"},{"qty":250,"price":"$1.58788","currency":"USD"},{"qty":500,"price":"$1.38940","currency":"USD"},{"qty":1000,"price":"$1.15121","currency":"USD"},{"qty":2500,"price":"$1.12350","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/436451875093ef53a6afca337f2de9b8.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/PCF8574DW/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy PCF8574DW and how do I get a price?","answer":"Submit an RFQ for your target quantity and we will respond with a firm price and lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/PCF8574DW","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/PCF8574DW 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}}