A: The DS28E05R+T offers a balance of low power consumption, wide voltage range, and robust protection. The table below summarises its core specifications, drawn directly from manufacturer data and multiple distributor sources: Specification Value Memory Capacity 896 bits (112 bytes) Memory Organization 7 pages × 16 bytes (also expressed as 112 × 8 or 128 × 7) Memory Technology EEPROM (Non‑Volatile) Memory Interface 1‑Wire® (single‑contact) Access Time 2 µs (max) Write Cycle Time (tW) 16 ms (max) Supply Voltage (VCC) 1.71V to 3.63V (standard 3V ~ 3.6V) Active Current (Supply) 400 µA (max) Standby Current (Idle) Not specified in datasheet, but ultra‑low for 1‑Wire devices Write Endurance 1,000 cycles (at TA = +85°C) Data Retention 10 years (minimum) Operating Temperature (Industrial) –40°C to +85°C (TA) Package Type 3‑pin SOT‑23 (TO‑236‑3 / SC‑59) ESD Protection (IO Pin) ±8 kV HBM (typical) RoHS Status ROHS3 Compliant MSL (Moisture Sensitivity Level) 1 (Unlimited) — No special handling required Additional features include: Single‑Contact 1‑Wire Interface: Requires only one data line (plus ground) for communication, dramatically reducing wiring complexity and host I/O pin count. Unique Factory‑Programmed 64‑Bit ROM ID: Each device comes with a guaranteed unique 64‑bit ROM identification number (8‑bit family code + 48‑bit unique serial number + 8‑bit CRC). This enables the bus master to uniquely address up to hundreds of devices on the same two‑wire bus (data and ground) without address conflicts. Programmable Write Protection: Memory pages can be individually set to write‑protected or OTP (One‑Time Programmable) EPROM emulation modes through protection byte settings, providing flexible data security. Overdrive‑Only Communication: Communicates with the host at speeds up to 76.9 kbps (overdrive speed only) — it cannot be used together with standard‑speed or dual‑speed 1‑Wire slaves on the same bus.

A: The DS28E05R+T communicates via a single‑conductor 1‑Wire® bus, which uses only one data line (DQ) plus ground for both data transfer and (optionally) power. The bus master (host) initiates all transactions with a reset pulse, to which the device responds with a presence pulse. Once the master has detected a presence, it can issue one of the ROM function commands to address the device: ROM Command Opcode Description Read ROM 33h Reads the DS28E05’s unique 64‑bit ROM ID (8‑bit family code, 48‑bit serial number, and 8‑bit CRC) — can only be used if a single slave is on the bus Match ROM 55h Addresses a specific DS28E05 on a multidrop bus. The master sends a 64‑bit ROM ID, and only the device with that exact ID responds to subsequent memory commands. This works with one or multiple devices on the bus Search ROM F0h Allows the bus master to identify the ROM IDs of all slave devices on a multidrop bus using a process of elimination, taking advantage of the wired‑AND property of the bus Skip ROM CCh Addresses all devices simultaneously without sending a ROM ID — should only be used if a single device is present on the bus Resume Command A5h A shortcut command to select the same device that was previously selected with a ROM‑level command, reducing overhead on subsequent operations After the ROM command, the host issues a Memory Function Command to read, write, or configure the EEPROM memory pages, followed by the transaction data. The DS28E05 supports overdrive speed only (76.9 kbps max) and cannot be used together with standard‑speed or dual‑speed 1‑Wire slaves on the same bus. For a multidrop bus, a pullup resistor is required: maximum 1.5 kΩ for 3.3V operation, or maximum 750 Ω for 1.8V operation.

A: The DS28E05R+T is engineered for moderate‑duty, long‑term data storage. Key reliability specifications include: Reliability Parameter Specification Write/Erase Endurance 1,000 write/erase cycles (minimum, at TA = +85°C) Data Retention 10 years (minimum) Write Cycle Time (tW) 16 ms (max, self‑timed) Access Time 2 µs (max) EEPROM Programming Current 400 µA (max, at TA = –40°C to +85°C) Operating Temperature (Industrial) –40°C to +85°C The device also features ±8 kV HBM ESD protection (typical) on the IO pin, providing robust immunity to electrostatic discharge events during handling and operation. These specifications make the device suitable for applications requiring occasional data updates (e.g., device identification, calibration storage, consumable management) while guaranteeing long‑term data integrity over a decade.

A: The DS28E05R+T is well‑suited for applications where small‑capacity, secure non‑volatile storage is required in a minimal‑pin, space‑constrained package. Typical use cases include: Accessory / PCB identification – Storing unique board ID, manufacturing data, and product revision status. Medical sensor calibration data storage – Factory calibration constants stored directly on sensor probes or disposable medical sensors. Analog sensor calibration – Storing calibration coefficients on‑device for industrial sensors and transducers. Aftermarket management of consumables – Enabling after‑market management of consumables by storing usage data, enabling anti‑counterfeiting, and tracking of consumable lifecycle. Security and surveillance – Access control card readers and security devices where small, robust memory is required. Embedded authentication – Secure IoT connection, data integrity protection, and device authentication. ⚠️ Important Lifecycle Information: The product lifecycle status for the DS28E05R+T is Active. Multiple major distributors explicitly list the Part Status as Active: DigiKey lists the Part Status as Active with a manufacturer standard lead time of 10 weeks. AlliData lists the Part Status as Active. Worldway lists the Part Life Cycle Code as Active. LoveChip lists the Series as DS28E05R Active and the device is available with over 97,409 units in stock. Analog Devices continues to manufacture this device, and it is available in Tape & Reel packaging with a standard reel quantity of 3,000 units. The DS28E05R+T is also available in alternative packages: DS28E05P+T / DS28E05P+ – 6‑pin TSOC package DS28E05R+U – 3‑pin SOT‑23 with different packaging options DS28E05G+U / DS28E05GB+U – 4‑ball UCSP / 2‑pad SFN ultra‑small packages For new designs, the DS28E05R+T remains an active, suitable choice for 1‑Wire EEPROM applications requiring a small footprint, wide voltage range, industrial temperature rating, and reliable data storage. Engineers are advised to verify current availability with an authorised distributor (DigiKey, Mouser, Farnell, or Arrow) for the most up‑to‑date pricing and lead times.