{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"PCF8574APWRE4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"PCF8574APWRE4","canonicalUrl":"https://icboms.com/texas-instruments/PCF8574APWRE4","factsUrl":"https://icboms.com/api/mcp/products/PCF8574APWRE4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments PCF8574APWRE4, I2C 8-bit I/O expander, 100 kHz, 2.5V-6V supply, 1mA source / 25mA sink, 20-TSSOP, -40°C~85°C.","salesMarkdown":"The PCF8574APWRE4: It provides eight push-pull I/O lines with an interrupt output, letting a host MCU monitor pin changes without polling the bus. ## Output drive — 1 mA source, 25 mA sink Each I/O pin can source 1 mA or sink 25 mA. The source side is light, so if you need to power an external load from the pin, budget a pull-up or a small driver. ## Package and footprint — 20-TSSOP Housed in a 20-TSSOP (4.40 mm wide, 0.173\" pitch), surface-mount only. No thermal pad to worry about — this is a low-power part that stays cool.","metaTitle":"PCF8574APWRE4 I2C 8-bit I/O expander, 100 kHz, 20-TSSOP","metaDescription":"Texas Instruments PCF8574APWRE4 I2C 8-bit I/O expander with 100 kHz clock, 2.5V-6V supply, 20-TSSOP.","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)","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)","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":"$1.0000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/fb696dd34b280bb875ac664bb0ca53b4.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/PCF8574APWRE4/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/PCF8574APWRE4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/PCF8574APWRE4 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}}