{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"PCAL9555APW,118","brand":"NXP Semiconductors","brandSlug":"nxp","productSlug":"PCAL9555APW118","canonicalUrl":"https://icboms.com/nxp/PCAL9555APW118","factsUrl":"https://icboms.com/api/mcp/products/PCAL9555APW%2C118","rawCanonicalId":null},"summary":{"shortDescription":"NXP PCAL9555APW,118, Agile series, 16-bit I²C/SMBus GPIO expander, 400 kHz, 1.65 V – 5.5 V supply, open-drain/push-pull output, POR, interrupt output, -40°C to 85°C, 24-TSSOP.","salesMarkdown":"## I/O drive and interrupt – what the numbers mean for the BOM Each I/O can source 10 mA or sink 25 mA. That sink current is enough to drive a standard LED or a small relay coil directly, saving a transistor per channel. The 400 kHz clock rate is the I²C bus speed — fine for reading switch banks or setting outputs at loop rates up to 25 kHz. If you need faster updates, this part isn't the one; look at a parallel-bus expander instead. ## Package and temperature – board fit and environment Housed in a 24-TSSOP (4.40 mm width), surface-mount only. The -40°C to 85°C range covers industrial enclosures, outdoor telecom cabinets, and HVAC controllers. No AEC-Q100 qualification here — this is the industrial-grade variant, not automotive. ## Lifecycle and sourcing – active, no LTB risk ROHS3 compliant. Active lifecycle status.","metaTitle":"PCAL9555APW,118 I²C/SMBus GPIO Expander, 16 I/O, 400 kHz","metaDescription":"PCAL9555APW,118 – NXP Agile series 16-bit I²C/SMBus GPIO expander with POR, interrupt output, 1.65–5.5 V supply, industrial temp. Active, ROHS3.","metaKeywords":null},"attributes":{"series":"Agile","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Series":"Agile","Package":"Tape & Reel (TR); Cut Tape (CT)","Features":"POR","Interface":"I²C, SMBus","Output Type":"Open Drain, Push-Pull","Mounting Type":"Surface Mount","Number of I/O":"16","Package / Case":"24-TSSOP (0.173\\\", 4.40mm Width)","Clock Frequency":"400 kHz","lifecycle_stage":"eol_hot","Interrupt Output":"Yes","Voltage - Supply":"1.65V ~ 5.5V","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"24-TSSOP","Current - Output Source/Sink":"10mA, 25mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.21","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.21000","currency":"USD"},{"qty":10,"price":"$1.98700","currency":"USD"},{"qty":25,"price":"$1.87480","currency":"USD"},{"qty":100,"price":"$1.59730","currency":"USD"},{"qty":250,"price":"$1.49984","currency":"USD"},{"qty":500,"price":"$1.31236","currency":"USD"},{"qty":1000,"price":"$1.08739","currency":"USD"},{"qty":2500,"price":"$1.01240","currency":"USD"},{"qty":5000,"price":"$0.97490","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/b04b6ad8efeb01e6a23ea63507648e5a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Does PCAL9555APW,118 have an interrupt output?","answer":"Yes. The INT pin asserts low when any input changes state, allowing the host to read the port only on change instead of polling."},{"question":"PCAL9555APW,118 vs PCA9555A – what are the differences?","answer":"The PCAL9555APW includes a Power-On Reset (POR) feature that the PCA9555A lacks. POR forces all outputs to a defined state at power-up, which matters in safety-critical or fail-safe designs. Otherwise the two are pin-compatible and share the same I²C address map."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/nxp/PCAL9555APW118","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/nxp/PCAL9555APW118 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}