{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX5478EUD+T","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX5478EUDT","canonicalUrl":"https://icboms.com/analog-devices/MAX5478EUDT","factsUrl":"https://icboms.com/api/mcp/products/MAX5478EUD%2BT","rawCanonicalId":null},"summary":{"shortDescription":"Maxim Integrated MAX5478EUD+T, dual 50kΩ digital potentiometer, 256 taps, linear taper, I²C interface, non-volatile memory, 2.7V to 5.25V supply, -40°C to 85°C, 14-TSSOP package.","salesMarkdown":"## Dual 50kΩ digital potentiometer with 256-tap resolution The MAX5478EUD+T is a dual-channel digital potentiometer with linear taper, 256 taps per channel, and 50kΩ end-to-end resistance. ## I²C interface and selectable address Communication is over the I²C bus, with a selectable address feature that allows multiple MAX5478EUD+T devices to share the same bus. The selectable address is handled through a dedicated pin, giving the designer flexibility to place several pots on a single I²C line without address conflicts. The wiper resistance is typically 325Ω, which matters when the pot is used as a rheostat or in low-impedance divider networks — that series resistance adds to the bottom of the divider ratio and limits the minimum output voltage. ## Non-volatile memory — setting survives power loss The wiper position is stored in non-volatile memory, meaning the potentiometer returns to its last programmed value at power-up. This is the key differentiator from volatile digital pots that reset to mid-scale or zero on each power cycle. For a BOM line where the calibration value must survive a brownout or a field power cycle — think an industrial transmitter that cannot tolerate a recalibration step at every boot — the non-volatile storage eliminates the need for a separate EEPROM or a microcontroller to reload the setting. ## Lifecycle and compliance It is ROHS3 compliant. For a BOM freeze or a new-design qualification, this part does not carry an LTB risk today.","metaTitle":"MAX5478EUD+T Digital Potentiometer, 50kΩ, 256-Tap, Linear","metaDescription":"MAX5478EUD+T dual 50kΩ digital pot, 256 taps, linear taper, I²C, non-volatile, -40°C to 85°C, 14-TSSOP. Active, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Taper":"Linear","Package":"Tape & Reel (TR); Cut Tape (CT)","Features":"Selectable Address","Interface":"I²C","Tolerance":"±25%","Memory Type":"Non-Volatile","Configuration":"Potentiometer","Mounting Type":"Surface Mount","Number of Taps":"256","Package / Case":"14-TSSOP (0.173\\\", 4.40mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"2.7V ~ 5.25V","Resistance (Ohms)":"50k","Number of Circuits":"2","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"14-TSSOP","Temperature Coefficient (Typ)":"70ppm/°C","Resistance - Wiper (Ohms) (Typ)":"325"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.67","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$5.67000","currency":"USD"},{"qty":10,"price":"$5.09600","currency":"USD"},{"qty":25,"price":"$4.81760","currency":"USD"},{"qty":100,"price":"$4.17530","currency":"USD"},{"qty":250,"price":"$3.96120","currency":"USD"},{"qty":500,"price":"$3.55440","currency":"USD"},{"qty":1000,"price":"$2.99768","currency":"USD"},{"qty":2500,"price":"$2.84780","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/566b5fe3d6caa098620d94a8321a0cfe.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is the MAX5478EUD+T non-volatile?","answer":"Yes, the wiper position is stored in non-volatile memory, so the setting is retained when power is removed and restored at the next power-up."},{"question":"What is the I²C address and interface protocol for MAX5478EUD+T?","answer":"The MAX5478EUD+T uses the standard I²C protocol for communication. It has a selectable address feature via a dedicated pin, allowing multiple devices on the same bus without address conflicts. The exact address bits depend on the pin strapping and are detailed in the device datasheet."},{"question":"What is MAX5478EUD+T's listed taper?","answer":"The taper is Linear."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX5478EUDT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX5478EUDT 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}}