{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"PCA9535CPW,118","brand":"NXP Semiconductors","brandSlug":"nxp","productSlug":"PCA9535CPW118","canonicalUrl":"https://icboms.com/nxp/PCA9535CPW118","factsUrl":"https://icboms.com/api/mcp/products/PCA9535CPW%2C118","rawCanonicalId":null},"summary":{"shortDescription":"NXP PCA9535CPW,118, 16-bit I²C/SMBus I/O expander, 400 kHz clock, 2.3 V to 5.5 V supply, open-drain outputs, interrupt output, POR, -40°C to 85°C, 24-TSSOP package, Tape & Reel.","salesMarkdown":"## Key ratings and what they mean for the BOM The 400 kHz I²C clock rate is standard Fast-mode, compatible with most MCU I²C peripherals without needing a clock-stretch workaround. The 10 mA source and 25 mA sink per pin are enough to drive a standard LED directly (with a series resistor) or to pull a logic input high/low — but not enough for a relay coil without an external transistor. The POR (Power-On Reset) feature ensures all I/O channels start in a known high-impedance state, which avoids unintended actuator activation during power-up. The interrupt output saves firmware cycles: the host reads the expander only when an input changes, rather than polling the I²C bus continuously. ## Package and mounting Housed in a 24-TSSOP (4.40 mm body width), surface-mount only. Tape & Reel (TR) or Cut Tape (CT) options let you order production reels or small quantities for prototyping. ## Lifecycle and compliance Listed as Active with ROHS3 compliance. For a BOM freeze, this part carries no near-term obsolescence risk.","metaTitle":"NXP PCA9535CPW,118 I²C I/O Expander, 16-Bit, 400 kHz","metaDescription":"NXP PCA9535CPW,118 16-bit I²C/SMBus I/O expander in 24-TSSOP. 2.3 V to 5.5 V supply, 400 kHz clock, open-drain outputs, interrupt output, -40°C to 85°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Features":"POR","Interface":"I²C, SMBus","Output Type":"Open Drain","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 voltage does PCA9535CPW,118 support?","answer":"The supply voltage range is 2.3 V to 5.5 V. This covers 3.3 V and 5 V logic rails, and allows the expander to bridge between a 3.3 V MCU and 5 V peripherals."},{"question":"What are alternatives to PCA9535CPW,118?","answer":"The closest pin-compatible alternative in the same family is the PCA9535PW. The two parts share the same footprint, I²C interface, and 16-bit I/O count. The primary difference is that the PCA9535CPW includes a Power-On Reset (POR) feature, which the PCA9535PW lacks — the POR ensures all outputs start in a known high-impedance state on power-up. If your design requires that deterministic startup behavior, the PCA9535CPW is the correct choice."},{"question":"How does PCA9535CPW,118 differ from PCA9535PW?","answer":"The PCA9535CPW includes a Power-On Reset (POR) feature; the PCA9535PW does not. Both are 16-bit I²C I/O expanders in 24-TSSOP with the same pinout. The POR in the PCA9535CPW ensures all I/O channels start in a known high-impedance state, which is important for applications where outputs must not be active during power-up transients."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/nxp/PCA9535CPW118","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/nxp/PCA9535CPW118 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}}