{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"PCA9535PW,112","brand":"NXP Semiconductors","brandSlug":"nxp","productSlug":"PCA9535PW112","canonicalUrl":"https://icboms.com/nxp/PCA9535PW112","factsUrl":"https://icboms.com/api/mcp/products/PCA9535PW%2C112","rawCanonicalId":null},"summary":{"shortDescription":"NXP Semiconductors PCA9535PW,112 16-bit I2C/SMBus I/O expander, 400 kHz, 2.3 V to 5.5 V, 24-TSSOP, Tube, -40 °C to 85 °C.","salesMarkdown":"## 16-bit I²C GPIO expander in 24-TSSOP The NXP PCA9535PW,112 is a 16-bit general-purpose parallel I/O expander controlled via the I²C bus or SMBus, clocked at 400 kHz. It adds 16 push-pull I/O lines to any host microcontroller that supports the two-wire interface, without consuming additional GPIO pins on the processor. Each I/O can source 10 mA or sink 25 mA, enough to drive LEDs, small relays, or level-shift discrete signals directly. ## Package, temperature grade, and compliance The part carries a power-on reset (POR) feature that initializes the I/O ports to a known state on power-up, preventing glitches on outputs before the host configures the registers. It also provides an interrupt output pin that signals the host when an input state changes, reducing polling overhead. ROHS3 compliant per. ## Supply voltage and I/O drive capability The 10 mA source / 25 mA sink per pin is sufficient for direct LED drive or interfacing with optocouplers without external buffers. Because the I/O are push-pull, they do not require external pull-up resistors for output mode — only the I²C bus lines (SCL, SDA) need pull-ups, which are typically already present on the bus. This simplifies the BOM and reduces board area.","metaTitle":"NXP PCA9535PW,112 I2C GPIO Expander, 16 I/O, 24-TSSOP","metaDescription":"NXP PCA9535PW,112 16-bit I2C/SMBus I/O expander, 400 kHz, 2.3-5.5 V, -40 to 85 °C, 24-TSSOP. Active, ROHS3. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tube","Features":"POR","Interface":"I²C, SMBus","Output Type":"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":"2.3V ~ 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":"$2.46","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.46000","currency":"USD"},{"qty":10,"price":"$2.20800","currency":"USD"},{"qty":25,"price":"$2.08280","currency":"USD"},{"qty":100,"price":"$1.77460","currency":"USD"},{"qty":250,"price":"$1.66628","currency":"USD"},{"qty":500,"price":"$1.45802","currency":"USD"},{"qty":1000,"price":"$1.20807","currency":"USD"},{"qty":2500,"price":"$1.12475","currency":"USD"},{"qty":5000,"price":"$1.08309","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/074eaf3e74eccaf4813db0e18123879d.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the I²C clock speed and interface type?","answer":"The PCA9535PW,112 supports I²C and SMBus at a clock frequency up to 400 kHz. This is standard fast-mode I²C, compatible with most microcontrollers and SMBus hosts."},{"question":"What package does the PCA9535PW,112 come in?","answer":"It is supplied in a 24-TSSOP package (4.40 mm width) with a 0.65 mm lead pitch, shipped in tubes. The supplier device package is also 24-TSSOP."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/nxp/PCA9535PW112","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/nxp/PCA9535PW112 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}