{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"PCAL9554BPWJ","brand":"NXP Semiconductors","brandSlug":"nxp","productSlug":"PCAL9554BPWJ","canonicalUrl":"https://icboms.com/nxp/PCAL9554BPWJ","factsUrl":"https://icboms.com/api/mcp/products/PCAL9554BPWJ","rawCanonicalId":null},"summary":{"shortDescription":"NXP Agile series PCAL9554BPWJ, 8-bit I2C/SMBus GPIO expander, 400 kHz clock, 1.65V-5.5V supply, open-drain/push-pull outputs, POR, interrupt output, -40°C to 85°C, 16-TSSOP package.","salesMarkdown":"## 8-bit I2C GPIO expander for board-level I/O scaling The NXP PCAL9554BPWJ is an 8-bit general-purpose I/O expander from the Agile series, communicating over an I²C or SMBus interface at up to 400 kHz. It provides eight configurable I/O pins that can be set as open-drain or push-pull outputs, with a power-on reset (POR) ensuring a known startup state. The interrupt output signals the host when an input changes, eliminating constant polling. Typical applications include server motherboards, industrial control panels, and telecom line cards where a microcontroller lacks enough GPIO pins. ## Supply range and logic-level compatibility The supply voltage spans 1.65 V to 5.5 V. No separate level shifter is needed when the host controller runs at a different voltage — the expander's I/O pins track VDD. ## Output drive and pull-up planning Each I/O can source 10 mA or sink 25 mA. For open-drain outputs, the external pull-up resistor value must be sized to keep the rise time within the 400 kHz bus timing budget. ## Industrial temperature range and package Rated for -40°C to 85°C, the PCAL9554BPWJ suits indoor and outdoor industrial equipment, HVAC controllers, and networking gear. The 16-TSSOP package (4.40 mm width) is a common footprint for space-constrained PCBs. Surface-mount assembly is standard; no special handling beyond normal SMT reflow. ## Sourcing and lifecycle NXP lists the PCAL9554BPWJ as Active and ROHS3 compliant. There is no last-time-buy notice or NRND flag, so it remains qualified for new designs and production BOMs.","metaTitle":"NXP PCAL9554BPWJ I2C GPIO Expander, 8-bit, 400 kHz, 16-TSSOP","metaDescription":"PCAL9554BPWJ 8-bit I2C/SMBus GPIO expander from NXP Agile series. 1.65V-5.5V supply, 400 kHz, open-drain/push-pull outputs, POR, interrupt output.","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":"8","Package / Case":"16-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":"16-TSSOP","Current - Output Source/Sink":"10mA, 25mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.15","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.15000","currency":"USD"},{"qty":10,"price":"$1.93300","currency":"USD"},{"qty":25,"price":"$1.82320","currency":"USD"},{"qty":100,"price":"$1.55350","currency":"USD"},{"qty":250,"price":"$1.45864","currency":"USD"},{"qty":500,"price":"$1.27632","currency":"USD"},{"qty":1000,"price":"$1.05752","currency":"USD"},{"qty":2500,"price":"$0.98458","currency":"USD"},{"qty":5000,"price":"$0.94812","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/9ece3ba57ac7bdc2b0fd55db4fd99d7d.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Does PCAL9554BPWJ require external pull-up resistors?","answer":"For open-drain outputs, yes — external pull-up resistors are needed to define the logic-high level. The I²C bus lines (SCL, SDA) also require pull-ups per the I²C specification. Push-pull outputs do not need pull-ups."},{"question":"What is the closest pin-compatible alternative to PCAL9554BPWJ?","answer":"The standard PCA9554 is a direct pin-compatible alternative within the same 16-TSSOP footprint. The PCAL9554B variant adds Agile features like POR and adjustable output drive, but the pinout is the same."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/nxp/PCAL9554BPWJ","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/nxp/PCAL9554BPWJ 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}}