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iButton® devices are small, durably packaged modules with globally unique digital addresses. An iButton device uses a stainless steel 'can' as an electronic communications interface. The iButton can has a data contact, called the 'lid', and a ground contact, called the 'base'. Each of the iButton contacts is connected to the silicon chip inside. The iButton base includes a flange to simplify attaching the iButton device to just about anything.  
 
Enhanced by our 1-Wire communications protocol, iButtons provide the ability to deliver or record data where other products cannot, such as in very harsh environments. An iButton device is ideal for any application where information needs to follow a person or object, such as temperature and humidity data logging, access control, asset tracking, and electronic cash (eCash) transactions.

Learn more about iButton Devices

Testimonials

Formula Student Germany: Keeping Electric Race Car Batteries Safe with iButton

April 17, 2020

See how iButton devices are helping Formula Student Germany competitors keep their electric formula race car batteries running safely.

See more

Featured Products

DS1964S DeepCover Secure Authenticator iButton with SHA-256
DeepCover® embedded security solutions cloak sensitive data under multiple layers of advanced ph...
  • Symmetric-Key-Based Bidirectional Secure Authentication Model Based on SHA-256
  • Strong Authentication with a High-Bit-Count User-Programmable Secret and Input Challenge
  • 512 Bits of User EEPROM Partitioned Into Two Pages of 256 Bits
  • User-Programmable and Irreversible EEPROM Protection Modes Including Write and Read Protect and OTP/EPROM Emulation
  • Unique Factory-Programmed, 64-Bit Identification Number
  • Single-Contact 1-Wire Interfac
  • Operating Range: -40℃ to +85℃
  • ±8kV HBM ESD Protection (typ)
  • Durable Stainless-Steel Enclosure Withstands Harsh Environments and Conditions
DS28E17 1-Wire®-to-I2C Master Bridge
The DS28E17 is a 1-Wire slave to I2C master bridge device that interfaces directly to I2C slaves...
  • Converts 1-Wire Communication Protocol to I2C Master I/O
    • Operates I2C Slave Peripherals over the Single-Contact, 1-Wire Interface
  • Extend I2C Communication Distance with 1-Wire Protocol
    • 100 Meters (typ) in Standard Speed for a Properly Configured Network
  • Flexible 1-Wire Slave and I2C Master Operational Modes
    • Supports 15kbps and 77kbps 1-Wire Protocol with Packetized I2C Data Payloads
    • Factory-Programmed, Unique 64-Bit 1-Wire ROM ID Provides Unalterable Serial Number to End Equipment
    • Standard 100kHz and 400kHz Communication Rates for I2C
    • I2C Clock Stretching Automatically Supported
  • Low Power Consumption
    • 0.3µA (typ) in Sleep Mode
    • 2.6mA (typ) when Operational
    • Separate Pins for Sleep and Wakeup Flexibility
    • Remote Power Controlled by an Awake Pin
    • Sleep Mode Enabled by Sleep Pin or a 1-Wire Device Command
  • Easy to Integrate
    • 3.3V(nom) Supply, Small 4mm x 4mm x 0.75mm TQFN package, -40°C to +85°C Operation
    • Evaluation HW and SW Available
DS1402-BP8 1-Wire Network Cables
The DS1402 series of 1-Wire network cables provides connectivity to any USB, serial, or parallel...
  • Coiled Cables Provide Flexible Connection toConnect iButtons® and Capsule Products to 1-Wire® Networks
  • Convenient, Off-the-Shelf Connectivity
  • Multiple Connectors Maximize Battery Life
    • Momentary Contact
    • Dwelled Contact
    • Touch and Hold
  • Optional Adhesive Pad Simplifies Mounting
  • Extension Cable (DS1402-BR8+) Supports a Wider Range of Applications
DS1402D-DB8 1-Wire Network Cables
The DS1402 series of 1-Wire network cables provides connectivity to any USB, serial, or parallel...
  • Coiled Cables Provide Flexible Connection toConnect iButtons® and Capsule Products to 1-Wire® Networks
  • Convenient, Off-the-Shelf Connectivity
  • Multiple Connectors Maximize Battery Life
    • Momentary Contact
    • Dwelled Contact
    • Touch and Hold
  • Optional Adhesive Pad Simplifies Mounting
  • Extension Cable (DS1402-BR8+) Supports a Wider Range of Applications
DS1402-RP8 1-Wire Network Cables
The DS1402 series of 1-Wire network cables provides connectivity to any USB, serial, or parallel...
  • Coiled Cables Provide Flexible Connection toConnect iButtons® and Capsule Products to 1-Wire® Networks
  • Convenient, Off-the-Shelf Connectivity
  • Multiple Connectors Maximize Battery Life
    • Momentary Contact
    • Dwelled Contact
    • Touch and Hold
  • Optional Adhesive Pad Simplifies Mounting
  • Extension Cable (DS1402-BR8+) Supports a Wider Range of Applications
DS1402D-DR8 1-Wire Network Cables
The DS1402 series of 1-Wire network cables provides connectivity to any USB, serial, or parallel...
  • Coiled Cables Provide Flexible Connection toConnect iButtons® and Capsule Products to 1-Wire® Networks
  • Convenient, Off-the-Shelf Connectivity
  • Multiple Connectors Maximize Battery Life
    • Momentary Contact
    • Dwelled Contact
    • Touch and Hold
  • Optional Adhesive Pad Simplifies Mounting
  • Extension Cable (DS1402-BR8+) Supports a Wider Range of Applications
DS1402-BR8 1-Wire Network Cables
The DS1402 series of 1-Wire network cables provides connectivity to any USB, serial, or parallel...
  • Coiled Cables Provide Flexible Connection toConnect iButtons® and Capsule Products to 1-Wire® Networks
  • Convenient, Off-the-Shelf Connectivity
  • Multiple Connectors Maximize Battery Life
    • Momentary Contact
    • Dwelled Contact
    • Touch and Hold
  • Optional Adhesive Pad Simplifies Mounting
  • Extension Cable (DS1402-BR8+) Supports a Wider Range of Applications
DS1402-RP3 1-Wire Network Cables
The DS1402 series of 1-Wire network cables provides connectivity to any USB, serial, or parallel...
  • Coiled Cables Provide Flexible Connection toConnect iButtons® and Capsule Products to 1-Wire® Networks
  • Convenient, Off-the-Shelf Connectivity
  • Multiple Connectors Maximize Battery Life
    • Momentary Contact
    • Dwelled Contact
    • Touch and Hold
  • Optional Adhesive Pad Simplifies Mounting
  • Extension Cable (DS1402-BR8+) Supports a Wider Range of Applications
DS9098P iButton Retainer
The DS9098P iButton retainer is a low-cost, surface-mount device to secure an F5 iButton on a PC...
  • Compact Receptacle for F5 iButton® Mounting
  • Fully Backward-Compatible to DS9098
  • Contacts are Stainless Steel with Selective 100% Matte Tin Plating for Optimal Pb-free Solderability to PCB
  • Retainer to iButton Connection is Stainless Steel to Stainless Steel
  • Withstands Up to +250°C for Surface Mounting
  • Double Redundancy of Contacts (2 plus 2)
  • Contact Force Exceeds 2N for Reliable Connection
  • Prevents Reversed Insertion
  • At Insertion, the iButton is Latched for Retention
  • The iButton Pops Up for Removal When Latch is Released
  • Gentle Deflection of Latches Allows Removal of the iButton
  • > 25 Insertion/Withdrawal Cycles with No Performance Degradation
  • Compatible with Standard Pick and Place Equipment
  • Cleaning Fluids Drain Freely for Quick Cleanup
DS1411-009 Serial Port iButton Holder
The DS1411 is a sophisticated RS-232-to-1-Wire® adapter and iButton holder that performs RS-232-...
  • Small Size, True-Ground Interface to an RS-232 COM Port for Reading and Writing iButton® Devices
  • CE and FCC Compliant
  • Works with Bipolar Logic Signals of ±5V to ± 12V (RS-232C) as well as Unipolar Signals of 5V to 12V
  • Supports Reading and Writing at Standard and Overdrive Speeds
  • Provides Strong Pullup to 5V for Temperature iButton and EEPROM iButton
  • Communicates at Data Rates of 9.6kbps (default), 19.2kbps, 57.6kbps, and 115.2kbps
  • Powered Entirely from an RS-232 Interface
  • Standard DB9 Female Connector for Mating to the COM Port of a Computer with DS9098P iButton Retainer for a Single iButton
  • Includes DS2502 Identification Chip (DS1411-009 Version Only)
DS1411-S09 Serial Port iButton Holder
The DS1411 is a sophisticated RS-232-to-1-Wire® adapter and iButton holder that performs RS-232-...
  • Small Size, True-Ground Interface to an RS-232 COM Port for Reading and Writing iButton® Devices
  • CE and FCC Compliant
  • Works with Bipolar Logic Signals of ±5V to ± 12V (RS-232C) as well as Unipolar Signals of 5V to 12V
  • Supports Reading and Writing at Standard and Overdrive Speeds
  • Provides Strong Pullup to 5V for Temperature iButton and EEPROM iButton
  • Communicates at Data Rates of 9.6kbps (default), 19.2kbps, 57.6kbps, and 115.2kbps
  • Powered Entirely from an RS-232 Interface
  • Standard DB9 Female Connector for Mating to the COM Port of a Computer with DS9098P iButton Retainer for a Single iButton
  • Includes DS2502 Identification Chip (DS1411-009 Version Only)
DS1411 Serial Port iButton Holder
The DS1411 is a sophisticated RS-232-to-1-Wire® adapter and iButton holder that performs RS-232-...
  • Small Size, True-Ground Interface to an RS-232 COM Port for Reading and Writing iButton® Devices
  • CE and FCC Compliant
  • Works with Bipolar Logic Signals of ±5V to ± 12V (RS-232C) as well as Unipolar Signals of 5V to 12V
  • Supports Reading and Writing at Standard and Overdrive Speeds
  • Provides Strong Pullup to 5V for Temperature iButton and EEPROM iButton
  • Communicates at Data Rates of 9.6kbps (default), 19.2kbps, 57.6kbps, and 115.2kbps
  • Powered Entirely from an RS-232 Interface
  • Standard DB9 Female Connector for Mating to the COM Port of a Computer with DS9098P iButton Retainer for a Single iButton
  • Includes DS2502 Identification Chip (DS1411-009 Version Only)
DS9097U-E25 Universal 1-Wire COM Port Adapter
The DS9097U is a sophisticated RS-232 to 1-Wire® adapter, which performs RS-232 level conversion...
  • True-Ground Interface to an RS-232 COM Port for Reading and Writing 1-Wire Devices
  • Works with Bipolar as well as Unipolar Logic Signals
  • Compatible to COM port of (±)5V to (±)12V (DB9 Version Only) or (±)6V to (±)12V (DB25 Version)
  • Supports Reading and Writing at Standard and Overdrive Speeds
  • Provides Strong Pullup to 5V for Temperature and EEPROM 1-Wire Devices
  • Programs 1-Wire EPROM Devices (DB-25 Version with External 12V Power Supply Only)
  • Communicates at Data Rates of 9.6kbps (default), 19.2kbps, 57.6kbps, and 115.2kbps
  • Standard DB9 or DB25 Female Connector and 6-Lead RJ11 Connector for Easy Attachment of Standard 1-Wire Cables and Probes
  • Includes DS2502 Identification Chip (DS9097U-009 Only)
DS9097U-S09 Universal 1-Wire COM Port Adapter
The DS9097U is a sophisticated RS-232 to 1-Wire® adapter, which performs RS-232 level conversion...
  • True-Ground Interface to an RS-232 COM Port for Reading and Writing 1-Wire Devices
  • Works with Bipolar as well as Unipolar Logic Signals
  • Compatible to COM port of (±)5V to (±)12V (DB9 Version Only) or (±)6V to (±)12V (DB25 Version)
  • Supports Reading and Writing at Standard and Overdrive Speeds
  • Provides Strong Pullup to 5V for Temperature and EEPROM 1-Wire Devices
  • Programs 1-Wire EPROM Devices (DB-25 Version with External 12V Power Supply Only)
  • Communicates at Data Rates of 9.6kbps (default), 19.2kbps, 57.6kbps, and 115.2kbps
  • Standard DB9 or DB25 Female Connector and 6-Lead RJ11 Connector for Easy Attachment of Standard 1-Wire Cables and Probes
  • Includes DS2502 Identification Chip (DS9097U-009 Only)
DS9097U Universal 1-Wire COM Port Adapter
The DS9097U is a sophisticated RS-232 to 1-Wire® adapter, which performs RS-232 level conversion...
  • True-Ground Interface to an RS-232 COM Port for Reading and Writing 1-Wire Devices
  • Works with Bipolar as well as Unipolar Logic Signals
  • Compatible to COM port of (±)5V to (±)12V (DB9 Version Only) or (±)6V to (±)12V (DB25 Version)
  • Supports Reading and Writing at Standard and Overdrive Speeds
  • Provides Strong Pullup to 5V for Temperature and EEPROM 1-Wire Devices
  • Programs 1-Wire EPROM Devices (DB-25 Version with External 12V Power Supply Only)
  • Communicates at Data Rates of 9.6kbps (default), 19.2kbps, 57.6kbps, and 115.2kbps
  • Standard DB9 or DB25 Female Connector and 6-Lead RJ11 Connector for Easy Attachment of Standard 1-Wire Cables and Probes
  • Includes DS2502 Identification Chip (DS9097U-009 Only)
DS9097U-009 Universal 1-Wire COM Port Adapter
The DS9097U is a sophisticated RS-232 to 1-Wire® adapter, which performs RS-232 level conversion...
  • True-Ground Interface to an RS-232 COM Port for Reading and Writing 1-Wire Devices
  • Works with Bipolar as well as Unipolar Logic Signals
  • Compatible to COM port of (±)5V to (±)12V (DB9 Version Only) or (±)6V to (±)12V (DB25 Version)
  • Supports Reading and Writing at Standard and Overdrive Speeds
  • Provides Strong Pullup to 5V for Temperature and EEPROM 1-Wire Devices
  • Programs 1-Wire EPROM Devices (DB-25 Version with External 12V Power Supply Only)
  • Communicates at Data Rates of 9.6kbps (default), 19.2kbps, 57.6kbps, and 115.2kbps
  • Standard DB9 or DB25 Female Connector and 6-Lead RJ11 Connector for Easy Attachment of Standard 1-Wire Cables and Probes
  • Includes DS2502 Identification Chip (DS9097U-009 Only)
MAX66040 ISO/IEC 14443 Type B-Compliant Secure Memory
The MAX66040 combines 1024 bits of user EEPROM with secure hash algorithm (SHA-1) challenge-and-...
  • Fully Compliant ISO/IEC 14443 (Parts 2-4) Type B Interface
  • 13.56MHz ±7kHz Carrier Frequency
  • 1024-Bit Secure User EEPROM with Block Lock Feature, Write-Cycle Counter, and Optional EPROM-Emulation Mode
  • 64-Bit UID
  • 512-Bit SHA-1 Engine to Compute 160-Bit MAC and to Generate Secrets
  • Mutual Authentication: Data Read from Device is Verified and Authenticated by the Host with Knowledge of the 64-Bit Secret
  • Read and Write (64-Bit Block)
  • Supports AFI and CID Function
  • 10ms Maximum Programming Time
  • Write: 10% ASK Modulation at 105.9kbps, 211.9kbps, 423.75kbps, or 847.5kbps
  • Read: Load Modulation Using BPSK Modulated Subcarrier at 105.9kbps, 211.9kbps, 423.75kbps, or 847.5kbps
  • 200,000 Write/Erase Cycles (Minimum)
  • 40-Year Data Retention (Minimum)
Download Data Sheet
MAX66000 ISO/IEC 14443 Type B-Compliant 64-Bit UID
The MAX66000 combines a 64-bit unique identifier (UID) and a 13.56MHz RF interface (ISO/IEC 1444...
  • Fully Compliant ISO/IEC 14443 (Parts 2-4) Type B Interface
  • 13.56MHz ±7kHz Carrier Frequency
  • 64-Bit UID
  • Supports AFI and CID Function
  • Write: 10% ASK Modulation at 105.9kbps, 211.9kbps, 423.75kbps, or 847.5kbps
  • Read: Load Modulation Using BPSK Modulated Subcarrier at 105.9kbps, 211.9kbps, 423.75kbps, or 847.5kbps
  • Powered Entirely Through the RF Field
  • Operating Temperature: -25°C to +50°C
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