{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"PCF8574APWR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"PCF8574APWR","canonicalUrl":"https://icboms.com/texas-instruments/PCF8574APWR","factsUrl":"https://icboms.com/api/mcp/products/PCF8574APWR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments PCF8574APWR I²C I/O expander, 8-bit, 100 kHz, 2.5 V to 6 V supply, push-pull output, interrupt output, -40°C to 85°C, 20-TSSOP package.","salesMarkdown":"## Active I²C GPIO expander in a 20-TSSOP footprint The interrupt output (INT) signals the host when an input changes, eliminating the need for constant polling. ## Supply voltage and I/O drive capability The push-pull output structure means no external pull-up resistors on output lines, though the I²C bus lines themselves still need pull-ups per the I²C specification.","metaTitle":"Texas Instruments PCF8574APWR I²C I/O Expander, 8 GPIO","metaDescription":"Texas Instruments PCF8574APWR I²C I/O expander with 8 push-pull outputs, interrupt output, 2.5V–6V supply, -40°C to 85°C range. Active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","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":[{"qty":1,"price":"$1.95000","currency":"USD"},{"qty":10,"price":"$1.75300","currency":"USD"},{"qty":25,"price":"$1.65360","currency":"USD"},{"qty":100,"price":"$1.40890","currency":"USD"},{"qty":250,"price":"$1.32288","currency":"USD"},{"qty":500,"price":"$1.15752","currency":"USD"},{"qty":1000,"price":"$0.95909","currency":"USD"},{"qty":2000,"price":"$0.93600","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/fb696dd34b280bb875ac664bb0ca53b4.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/PCF8574APWR/alternatives.json"},"ai":{"faq":[{"question":"Is PCF8574APWR the same as PCF8574?","answer":"No. The PCF8574APWR is the A-variant of the base PCF8574, with a different I²C slave address range (0x38–0x3F vs 0x20–0x27 for the original). The pinout and function are otherwise identical, but the address difference matters if you are replacing a PCF8574 on an existing bus."},{"question":"Does PCF8574APWR have interrupt output?","answer":"Yes, the interrupt output (INT) is provided. It goes active low when any input changes state, allowing the host MCU to wake from sleep or trigger an interrupt service routine without polling the I²C bus."},{"question":"Can PCF8574APWR be used with 3.3V microcontrollers?","answer":"Yes. The supply range of 2.5 V to 6 V covers 3.3 V operation, and the I²C interface is compatible with 3.3 V logic levels. No level translation is required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/PCF8574APWR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/PCF8574APWR 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}}