Analog Devices Inc./Maxim Integrated DS28E05GB+U

Overview

DS28E05GB+U from Maxim Integrated is a 1-Wire® EEPROM IC with 112 bytes of user-programmable memory (7 × 16-byte pages), factory-programmed unique 64-bit ROM ID, and open-drain 1-Wire interface operating at up to 76.9 kbps (overdrive only). It supports write protection and EPROM emulation modes per page, operates from 1.71V to 3.63V, and is rated for -40°C to +85°C - used for calibration data storage in medical sensors and accessory identification.

For engineers reviewing the DS28E05GB+U datasheet, DS28E05GB+U pinout, DS28E05GB+U application, or DS28E05GB+U equivalent, this page delivers verified electrical specs, package mapping (4-ball UCSP), 1-Wire timing constraints (tRSTL = 48–80 µs, tPROG = 16 ms), ESD rating (±8 kV HBM), and real-world use cases in consumables management and analog sensor calibration.

Technical Context

The DS28E05GB+U implements a single-contact 1-Wire slave interface with strict overdrive-speed timing compliance: reset low time (tRSTL) 48–80 µs, presence detect sample window (tMSP) 8–10 µs, and programming time (tPROG) 16 ms per 16-bit segment. Its memory architecture includes seven 128-bit user EEPROM pages plus administrative data (PPA–PPD protection nibbles) and ROM ID stored in page 7.

Protection is enforced via write-locked nibbles in address 0070h–0073h: each nibble controls one page's mode (0h = open, Ah = EPROM emulation, others = write-protected); once programmed, nibbles are irreversible. The device draws 400 µA during programming (IPROG) and requires external pullup (RPUP ≤ 1.5 kΩ at 3.3 V, ≤ 750 Ω at 1.8 V) due to parasitic power operation.

Key Specifications

Pinout & Package

DS28E05GB+U is packaged in a 4-ball UCSP (Ultra Compact Silicon Package) measuring 1.2 mm × 1.2 mm × 0.4 mm, optimized for space-constrained PCBs and electro-mechanical contact applications. The package uses bump bonding and is not intended for reflow soldering.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 1-Wire EEPROM applications.

Compared with DS28E05GB+U, DS2431+T offers simpler, lower-cost 1-Wire storage without programmable protection granularity, while DS28EC20+U extends functionality with hardware crypto - making DS28E05GB+U the optimal balance of tamper-resistance, counter capability, and cost for calibration and consumables tracking.

Availability

DS28E05GB+U is available at Aetrix Electronics and suitable for medical sensor calibration, accessory identification, analog sensor trim storage, and aftermarket consumables management requiring stable component supply across long-lifecycle products.

Supply support for DS28E05GB+U includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated (now part of Analog Devices) designs high-performance analog, mixed-signal, and digital ICs for industrial, medical, and communications applications - with emphasis on reliability, integration, and low-power operation.

The DS28E05GB+U belongs to Maxim's 1-Wire EEPROM product line, engineered specifically for secure, space-constrained, single-wire identification and calibration storage in disposable and field-serviceable devices.

FAQ

What is the primary function of the DS28E05GB+U in a system?

The DS28E05GB+U serves as a secure, uniquely identifiable 1-Wire EEPROM for storing calibration data, device IDs, or usage counters. Its 112-byte user memory, factory-programmed 64-bit ROM ID, and per-page write protection make it ideal for medical sensors and consumables where data integrity and authenticity are critical. The DS28E05GB+U operates parasitically - eliminating the need for a dedicated VCC connection in many accessory applications.

Does the DS28E05GB+U support standard-speed 1-Wire communication?

No, the DS28E05GB+U supports overdrive-speed 1-Wire only (76.9 kbps maximum) and is incompatible with standard-speed or dual-speed 1-Wire slaves. Its timing parameters - including tRSTL (48–80 µs), tW0L (8–16 µs), and tREC (5 µs) - are strictly defined for overdrive operation. Attempting standard-speed communication will result in failed presence detection or data corruption. The DS28E05GB+U must be deployed on a dedicated overdrive-only bus segment.

How is write protection configured on the DS28E05GB+U?

Write protection is configured by writing to protection nibbles PPA–PPD located at addresses 0070h–0073h in the administrative data page. Each nibble controls one user page: 0h = open (factory default), Ah = EPROM emulation mode, any other value = write-protected. Once programmed, nibbles cannot be changed. The DS28E05GB+U also supports copy lock (upper nibble of 0073h) to prevent further modification of protection settings - ensuring calibration data remains immutable after final programming.

What package type is used for the DS28E05GB+U, and what are its assembly requirements?

The DS28E05GB+U uses a 4-ball UCSP (Ultra Compact Silicon Package) measuring 1.2 mm × 1.2 mm × 0.4 mm with bump bonding. This package is qualified for electro-mechanical contact use only and is not designed for solder reflow. It must be mounted using conductive elastomer, spring-pin, or ZIF socket interfaces - not conventional SMT reflow. The DS28E05GB+U's UCSP avoids thermal stress on the die and enables ultra-thin wearable or disposable form factors where traditional soldering is impractical.

Can the DS28E05GB+U be used in a multidrop 1-Wire network with other device types?

Yes, the DS28E05GB+U supports multidrop networks via its unique 64-bit ROM ID, which serves as a hardware address. However, it must be deployed exclusively with other overdrive-speed 1-Wire devices - mixing with standard-speed or dual-speed slaves (e.g., DS18B20, DS2401) will cause timing conflicts and communication failure. Bus topology requires proper pullup (≤1.5 kΩ at 3.3 V), controlled capacitance (<1 nF), and termination to maintain signal integrity across all nodes in the DS28E05GB+U network.