{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DS2505+T&R","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"DS2505TR","canonicalUrl":"https://icboms.com/analog-devices/DS2505TR","factsUrl":"https://icboms.com/api/mcp/products/DS2505%2BT%26R","rawCanonicalId":null},"summary":{"shortDescription":"Maxim Integrated DS2505+T&R, 16Kbit OTP EPROM, 1-Wire interface, 15 µs access time, TO-92-3 through-hole package, -40°C to 85°C operating temperature.","salesMarkdown":"## What this 1-Wire EPROM is and where it fits The Maxim Integrated DS2505+T&R is a 16 Kbit one-time-programmable EPROM that communicates over a single-wire bus — the 1-Wire interface. It stores 16 Kbit organized as 16K x 1, read with a 15 µs access time. The part is housed in a through-hole TO-92-3 package with formed leads, rated for -40°C to 85°C operation. Typical applications include accessory or cartridge identification, calibration constant storage, consumable tracking, and small configuration tables where the data is written once at the factory and never changed. ## 15 µs access time — what it means for the bus The 15 µs access time is the time from the end of the read command to the data bit appearing on the 1-Wire line. For a 1-Wire master running at standard overdrive speed (roughly 15 µs per bit), this timing allows back-to-back reads without inserting wait states. If the host microcontroller's 1-Wire driver uses a tight bit-slot window, the 15 µs spec sets the upper bound on the read timing budget — the master must allow at least this long before sampling the line. ## OTP memory — no field updates possible Because the DS2505+T&R uses one-time-programmable EPROM cells, the data is written once and cannot be erased or rewritten. This is a deliberate choice for applications where tamper resistance or data integrity after factory programming is critical — consumable authentication, serialization, or calibration constants that must survive the product lifetime. For any BOM that might need field-updatable data, a 1-Wire EEPROM (such as the DS2431 or DS28E05) would be the correct alternative, though those parts are not pin-compatible with this TO-92-3 footprint. ## Industrial temperature grade and package The -40°C to 85°C operating range covers industrial, outdoor telecom, and automotive cabin environments. The TO-92-3 through-hole package is a standard three-lead transistor outline — easy to hand-assemble, socket, or wave-solder. The formed leads suit PCB mounting with 2.54 mm pitch. This is not a high-density package, but for a single identification or calibration memory on a sensor module or accessory board, the footprint is minimal. ## Lifecycle and sourcing reality The DS2505+T&R carries an Active lifecycle status per the manufacturer — no end-of-life notice, no last-time-buy window.","metaTitle":"DS2505+T&R 16Kbit 1-Wire OTP EPROM, 15 µs access, TO-92-3","metaDescription":"DS2505+T&R 16Kbit OTP EPROM with 1-Wire interface, 15 µs access time, industrial temp range -40°C to 85°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Technology":"EPROM - OTP","Access Time":"15 µs","Memory Size":"16Kbit","Memory Type":"Non-Volatile","Memory Format":"EPROM","Mounting Type":"Through Hole","Package / Case":"TO-226-3, TO-92-3 (TO-226AA) Formed Leads","lifecycle_stage":"eol_hot","Memory Interface":"1-Wire®","Memory Organization":"16K x 1","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"TO-92-3"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.44","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.44000","currency":"USD"},{"qty":10,"price":"$3.11700","currency":"USD"},{"qty":25,"price":"$3.04920","currency":"USD"},{"qty":50,"price":"$3.03280","currency":"USD"},{"qty":100,"price":"$2.71920","currency":"USD"},{"qty":250,"price":"$2.70928","currency":"USD"},{"qty":500,"price":"$2.61030","currency":"USD"},{"qty":1000,"price":"$2.48160","currency":"USD"},{"qty":2000,"price":"$2.47500","currency":"USD"}]},"links":{"datasheetUrl":"https://datasheets.maximintegrated.com/en/ds/DS2505.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to DS2505+T&R?","answer":"Within the same 1-Wire EPROM family, the DS2502 (1 Kbit) and DS2506 (64 Kbit) share the same TO-92-3 pinout and 1-Wire protocol, differing only in density. No direct OTP EPROM replacement with a different interface exists in the same package. For a rewritable alternative, the DS2431 (1 Kbit EEPROM) and DS28E05 (1 Kbit EEPROM) use the same TO-92-3 footprint but are not OTP."},{"question":"How to program DS2505+T&R?","answer":"The DS2505+T&R is programmed through the 1-Wire interface using a standard 1-Wire master (e.g., a microcontroller with a bit-bang UART or a dedicated 1-Wire controller like the DS2482). The programming voltage is supplied by the 1-Wire line itself — no external Vpp is needed. Maxim provides application notes and software libraries for programming OTP EPROMs over 1-Wire. The part can be programmed only once; verify the data before committing."},{"question":"Where can I buy DS2505+T&R available via RFQ confirmation?","answer":"The DS2505+T&R is available to order through independent distribution. Current availability and pricing are confirmed at quote time against an RFQ — submit a request for a firm quote on your required quantity."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/DS2505TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/DS2505TR 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}}