{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"PCF8574APW","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"PCF8574APW","canonicalUrl":"https://icboms.com/texas-instruments/PCF8574APW","factsUrl":"https://icboms.com/api/mcp/products/PCF8574APW","rawCanonicalId":null},"summary":{"shortDescription":"NXP PCF8574APW I2C I/O expander, 8-bit, 100 kHz, push-pull outputs, interrupt, POR, 2.5-6 V, -40 to 85°C, 20-TSSOP, Tube.","salesMarkdown":"## I2C expander with 8 I/O and interrupt The PCF8574APW is an 8-bit I/O expander communicating over the I²C bus at up to 100 kHz, with a dedicated interrupt output (INT) that signals the host when an input changes state. Each I/O pin can be configured as input or output; the push-pull outputs source 1 mA and sink 25 mA, enough to drive LEDs or small relays directly without a buffer. ## Package and board-fit Supplied in Tube format; the surface-mount package suits automated pick-and-place assembly.","metaTitle":"PCF8574APW I2C I/O Expander, 8-bit, 20-TSSOP, Active","metaDescription":"PCF8574APW I2C 8-bit I/O expander in 20-TSSOP. 2.5-6V supply, -40 to 85°C, push-pull outputs, interrupt output. Active production, ROHS3. Sourced to order.","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":"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":"$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/fb696dd34b280bb875ac664bb0ca53b4.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/PCF8574APW/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to PCF8574APW in this component family?","answer":"The base product number is PCF8574. The PCF8574APW is the 'A' variant with a different I2C slave address range (0x38–0x3F) versus the non-A version (0x20–0x27). Both are pin-compatible in the same 20-TSSOP package, so a layout can accept either by adjusting the address in firmware."},{"question":"What compliance documentation does this brand provide for PCF8574APW (RoHS, REACH, UL, IEC)?","answer":"The part is ROHS3 compliant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/PCF8574APW","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/PCF8574APW 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}}