My Inquiry
My Account
Analog Devices Inc./Maxim Integrated DS2502P-E48+
- Part No.:
- DS2502P-E48+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Memory
- Package:
- 6-SMD, J-Lead
- Datasheet:
-
DS2502P-E48+.pdf
- Description:
- IC EPROM 1KBIT 1-WIRE 6TSOC
- Quantity:
- Payment:
- Shipping:
Inventory:1,057
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DS2502P-E48+ from Maxim Integrated is a 48-bit node address chip with factory-programmed UniqueWare™ identifier (5E7h), 64-bit ROM registration number, and 768-bit user-programmable OTP-EPROM. It operates on a single 1-Wire bus pin, supports 2.8V–6.0V read voltage, and delivers EUI-48-compliant MAC addresses for industrial asset tagging and sensor node identification.
For engineers reviewing the DS2502P-E48+ datasheet, DS2502P-E48+ pinout, DS2502P-E48+ application, or DS2502P-E48+ equivalent, key selection criteria include 1-Wire interface compatibility, TSOC-6 package footprint, factory-lasered 48-bit node address structure, OTP memory write-protection behavior, and -40°C to +85°C operating range.
Technical Context
The DS2502P-E48+ implements a 1-Wire® multidrop bus protocol with presence detection, CRC16 validation (inverted polynomial X¹⁶+X¹⁵+X²+1), and add-only EPROM architecture. Its ROM family code is 89h, and UniqueWare Identifier is 5E7h - distinguishing it from standard DS2502 while maintaining identical electrical timing and command set.
Memory organization includes 32-byte protected page (00h–1Fh) containing length byte (0Ah), 4-byte Project ID (00001129h), 6-byte 48-bit node address (IEEE company ID 006035h + 24-bit extension), and inverted CRC16; remaining 96 bytes (20h–7Fh) are user-programmable and individually write-protectable.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Interface | 1-Wire® single-pin bidirectional bus with presence detection and CRC16 error checking |
| Node Address | Factory-programmed 48-bit EUI-48 compliant address (006035h + 24-bit extension) |
| ROM ID | 64-bit unique registration number with family code 89h and UniqueWare ID 5E7h |
| Memory | 768-bit OTP-EPROM: 32-byte write-protected page + 96-byte user-programmable area |
| Operating Voltage | 2.8V–6.0V for read; 11.5V–12.0V required for programming at -40°C to +50°C |
| Temperature Range | -40°C to +85°C for read operation; programming limited to -40°C to +50°C |
| Package | 6-pin TSOC surface-mount package (RoHS-compliant, lead-free) |
Pinout & Package
DS2502P-E48+ uses a 6-pin TSOC (Thin Small Outline Package) with exposed pad, optimized for automated assembly and space-constrained 1-Wire node designs. Pin 1 is VDD/Data, Pin 2 is GND, Pins 3–6 are NC (no connect).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | VDD/Data | Single-wire bidirectional I/O: supplies power during read, accepts 11.5–12.0V programming pulse |
| Pin 2 | GND | Ground reference for 1-Wire signaling and internal circuitry |
| Pins 3–6 | No Connect | Internally unconnected; must remain floating or grounded per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Factory-lasered 48-bit node address | Guarantees IEEE EUI-48 compliance and eliminates manual MAC assignment in networked sensors |
| Unique 64-bit ROM registration number | Enables absolute device traceability and secure bus enumeration without duplicate IDs |
| Add-only OTP-EPROM architecture | Allows incremental data writes without erasure-critical for field-updatable calibration or serial logs |
| 1-Wire multidrop controller | Supports up to 100+ devices on one bus wire with automatic collision detection and arbitration |
| Default Data Structure (UDP) | Standardized 00001129h Project ID + length + CRC format enables plug-in compatibility with 1-Wire APIs |
Applications
| Industrial Asset Tagging | Smart Sensor Node ID |
|---|---|
Use Scenario: Permanent identification of valves, pumps, and enclosures in oil & gas or water infrastructure. IC Role / Device Role / Timing Role: Factory-programmed 48-bit node address chip providing tamper-resistant, globally unique EUI-48 identifiers readable over long cable runs. Use Value: Eliminates manual barcode/QR label maintenance and enables automatic topology discovery via 1-Wire bus scanning. | Use Scenario: Assigning immutable MAC addresses to battery-powered temperature/humidity sensors deployed in HVAC networks. IC Role / Device Role / Timing Role: 1-Wire node address chip delivering IEEE-compliant identifiers with CRC-validated integrity on low-power microcontroller GPIO pins. Use Value: Reduces firmware overhead by offloading MAC generation and validation to hardware, preserving MCU cycles and flash. |
| Medical Device Calibration Logging | Secure Firmware Authentication |
Use Scenario: Storing calibrated coefficients and production timestamps in portable diagnostic equipment requiring regulatory traceability. IC Role / Device Role / Timing Role: Add-only OTP-EPROM storing auditable calibration records with factory-assigned 64-bit ROM ID for chain-of-custody verification. Use Value: Prevents accidental overwrite of critical calibration data while enabling field updates to non-critical parameters. | Use Scenario: Binding firmware images to specific hardware units during manufacturing to prevent unauthorized reflashing. IC Role / Device Role / Timing Role: Source of immutable 64-bit ROM ID used as cryptographic seed in secure boot key derivation. Use Value: Provides hardware-rooted uniqueness that cannot be cloned or duplicated, strengthening anti-counterfeiting measures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 1-Wire node address applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS2502-E48+ | TO-92 package; 3-pin through-hole; same 48-bit node address structure and ROM ID format | Preferred for prototyping, manual assembly, or legacy board designs requiring axial leads | Select DS2502-E48+ when TO-92 mechanical fit or hand-soldering is required |
| DS2401+ | 64-bit ROM only (no EPROM); no user-programmable memory; fixed family code 01h | Limited to basic device enumeration-cannot store project ID, node address, or CRC-protected data | Select DS2401+ only when minimal cost and pure ID functionality suffice, without data storage needs |
Compared with DS2502-E48+, the DS2502-E48+ offers identical logic and data structure but in TO-92 packaging, while DS2401+ provides only read-only ROM without programmable memory or UDP formatting-making DS2502P-E48+ the only choice for EUI-48-compliant, field-updatable node addressing in surface-mount systems.
Availability
DS2502P-E48+ is available at Aetrix Electronics and suitable for industrial asset tagging, smart sensor node identification, medical calibration logging, and secure firmware binding requiring stable component supply across extended product lifecycles.
Supply support for DS2502P-E48+ 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 precision analog, mixed-signal, and digital ICs for industrial, automotive, communications, and computing applications.
The DS2502P-E48+ belongs to Maxim's 1-Wire® node identification product line, engineered specifically to deliver factory-programmed, globally unique, CRC-verified identifiers and add-only memory for secure, low-pin-count device authentication and data logging.
FAQ
What is the function of the DS2502P-E48+ in a 1-Wire system?
The DS2502P-E48+ serves as a factory-programmed 48-bit node address chip that provides EUI-48-compliant MAC addresses and a unique 64-bit ROM ID for device identification on a 1-Wire bus. It enables secure enumeration, tamper-resistant asset tagging, and CRC-validated data storage in the DS2502P-E48+'s OTP-EPROM memory.
Does the DS2502P-E48+ require an external power supply?
No-the DS2502P-E48+ operates parasitically from the 1-Wire bus during read operations using power delivered through Pin 1 (VDD/Data). Programming requires an external 11.5V–12.0V pulse applied to the same pin, but no continuous VCC rail is needed for normal read functionality in the DS2502P-E48+.
How is the 48-bit node address structured in the DS2502P-E48+?
The DS2502P-E48+ stores a 48-bit node address as six contiguous bytes: the IEEE-assigned 24-bit company ID (006035h) followed by a 24-bit extension identifier. This forms a globally unique EUI-48 address, validated by an inverted CRC16 stored in the same 32-byte protected page of the DS2502P-E48+.
Can the DS2502P-E48+ be reprogrammed after initial programming?
The DS2502P-E48+ supports add-only programming: new data can be written to unprogrammed EPROM cells without erasing existing content. However, once a bit is programmed from '1' to '0', it cannot be reverted. The first 32 bytes-including the 48-bit node address-are permanently write-protected at the factory and cannot be altered in the DS2502P-E48+.
What is the difference between DS2502P-E48+ and DS2502-E48+?
The DS2502P-E48+ uses a 6-pin TSOC surface-mount package, whereas the DS2502-E48+ uses a 3-pin TO-92 through-hole package. Both share identical electrical behavior, ROM structure (family code 89h, UniqueWare ID 5E7h), memory map, and 48-bit node address functionality-the only distinction is mechanical packaging and mounting method for the DS2502P-E48+.
DS2502P-E48+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-SMD, J-Lead
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EPROM
- Technology:
- EPROM - OTP
- Memory Size:
- 1Kbit
- Memory Organization:
- 128 x 8
- Memory Interface:
- 1-Wire®
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- -
- Access Time:
- -
- Voltage - Supply:
- 2.8V ~ 6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TSOC
DS2502P-E48+ FAQ
1.How can I place an order for DS2502P-E48+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS2502P-E48+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DS2502P-E48+ reliable?
The price and inventory of DS2502P-E48+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS2502P-E48+ is usually 5 days.
3.What payment methods are accepted for DS2502P-E48+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS2502P-E48+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS2502P-E48+?
DS2502P-E48+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS2502P-E48+ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DS2502P-E48+?
For technical support, including DS2502P-E48+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS2502P-E48+ requirements.
6.How does Aetrix verify that DS2502P-E48+ is sourced from the original manufacturer or authorized distributors?
All DS2502P-E48+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DS2502P-E48+ meets industry standards.
7.What is the process for return or replacement of DS2502P-E48+?
All DS2502P-E48+ units undergo pre-shipment inspection (PSI). If there is an issue with DS2502P-E48+, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DS2502P-E48+ part is unused and in its original packaging.
Return procedure for DS2502P-E48+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DS2502P-E48+ Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
