DS1991L+F5

Name: DS1991L+F5
Brand: Dallas Semiconductor
Rating: 4.5 (10 reviews)
Author: Lisleapex

6,474 Effective Inventory

DS1991L+F5

Effective Inventory6,474

Manufacturer Part # : DS1991L+F5
Package/Case: CAN-2
Brand: Dallas Semiconductor
Product Categories : Other Memory ICs

Quality Assurance

All parts procured from our supply chain network undergo a rigorous incoming inspection process. This meticulous inspection ensures that the parts received by our customers are authentic and meet the required standards. Additionally, we maintain detailed records of these inspections to ensure transparency and traceability throughout the supply chain.

Certification

We have successfully obtained various certification standards and have established our own professional testing laboratory. This ensures that every product we supply to our customers meets the highest quality standards. We adhere to strict testing protocols to maintain the consistency and accuracy of our products. To ensure that our products are original and genuine, we also collaborate with reputable third-party testing facilities to conduct rigorous quality testing. Our commitment to quality extends to meeting industry, legal, regulatory, and ISO 9001:2015 requirements.

Shipping & Payment

About Shipping

We generally ship orders within a few business days through reliable shipping carriers such as FedEx, SF, UPS, or DHL. We also have support for other shipping methods. If you would like to inquire about specific shipping details or costs, please don't hesitate to reach out to us.

About Payment

We accept various payment methods, including VISA, MasterCard, UnionPay, Western Union, PayPal, and other channels.

If you have a specific payment method in mind or would like to inquire about rates and other details, please feel free to contact us.

WireTransfer

Paypal

CreditCard

WesternUnion

MoneyGram

Service & Packaging

About After Sales Service

All Parts Extended Quality Guarantee

Initiate the application within 90 days from the shipment date.

Confirm the return or exchange with our staff.

Maintain the goods in their original condition as received.

Lastly, please note that the eligibility for return or exchange of goods is subject to an assessment of the actual condition of the returned items. We will evaluate the received goods before finalizing the return or exchange process. If you have any inquiries or require further assistance regarding returns or exchanges, please don't hesitate to contact us at [email protected]

About packaging

Regarding packaging, our products are carefully packed in anti-static bags to provide ESD anti-static protection. The outer packaging is durable with secure closure. We support various packaging methods such as Tape and Reel, Cut Tape, Tube, or Tray.

Example

Tape and Reel

Cut Tape

Tube or Tray

DS1991L+F5 DataSheet

Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!

Interested Parts

DS1220Y-200
Dallas Semiconductor
DS1996L+F5
Dallas Semiconductor
DS1971+F5
Dallas Semiconductor
DS2401P/T&R
Dallas Semiconductor
AT28LV010-20JU
Microchip Technology
MT41K512M16HA-125:A
Alliance
M25P80-VMN6P
Micron
JS28F128P33B85
Micron Technology Inc.

Rapid Quote

Please submit RFQ for DS1991L+F5 or email to us: Email: [email protected], we will contact you in 12 hours.

Quantity^*

Contact Person^*

E-mail^*

Company Name

Anything else?

DS1991L+F5 Details

iButton DESCRIPTIONThe DS1991 MultiKey iButton is a rugged read/write data carrier that acts as three separate electronic keys, offering 1,152 bits of secure, nonvolatile memory. Each key is 384 bits long with distinct 64-bit password and public ID fields (Figure 1). The password field must be matched in order to access the secure memory. Data is transferred serially via the 1-Wire protocol, which requires only a single data lead and a ground return. The 512-bit scratchpad serves to ensure integrity of data transfers to secure memory. Data should first be written to the scratchpad where it can be read back. After the data has been verified, a copy scratchpad command will transfer the data to the secure memory. This process ensures data integrity when modifying the memory. A 48-bit serial number is factory lasered into each DS1991 to provide a guaranteed unique identity which allows for absolute traceability. The family code for the DS1991 is 02h. The durable MicroCan package is highly resistant to environmental hazards such as dirt, moisture and shock. Its compact button-shaped profile is self-aligning with mating receptacles, allowing the DS1991 to be easily used by human operators. Accessories permit the DS1991 to be mounted on plastic key fobs, photo-ID badges, printed-circuit boards or any smooth surface of an object. Applications include secure access control, debit tokens, work-in-progress tracking, electronic travelers and proprietary data.SPECIAL FEATURES■ 1,152-bit secure read/write, nonvolatile memory■ Secure memory cannot be deciphered without matching 64-bit password■ Memory is partitioned into 3 blocks of 384 bits each■ 64-bit password and ID fields for each memory block■ 512-bit scratchpad ensures data transfer integrity■ Operating temperature range: -40°C to +70°C■ Over 10 years of data retentionCOMMON iButton FEATURES■ Unique, factory-lasered and tested 64-bit registration number (8-bit family code + 48-bit serial number + 8-bit CRC tester) assures absolute traceability because no two parts are alike■ Multidrop controller for MicroLAN■ Digital identification and information by momentary contact■ Chip-based data carrier compactly stores information■ Data can be accessed while affixed to object■ Economically communicates to bus master with a single digital signal at 16.3k bits per second■ Standard 16 mm diameter and 1-Wire protocol ensure compatibility with iButton family■ Button shape is self-aligning with cup shaped probes■ Durable stainless steel case engraved with registration number withstands harsh environments■ Easily affixed with self-stick adhesive backing, latched by its flange, or locked with■ ring pressed onto its rim■ Presence detector acknowledges when reader first applies voltage■ Meets UL#913 (4th Edit.); Intrinsically Safe Apparatus, Approved under Entity Concept for use in Class I, Division 1, Group A, B, C and D Locations

Key Features

1,152-bit secure read/write, nonvolatile memory
Secure memory cannot be deciphered without matching 64-bit password
Memory is partitioned into 3 blocks of 384 bits each
64-bit password and ID fields for each memory block
512-bit scratchpad ensures data transfer integrity
Operating temperature range: -40°C to +70°C
Over 10 years of data retention
COMMON iButton FEATURES
Unique, factory-lasered and tested 64-bit registration number (8-bit family code + 48-bit serial number + 8-bit CRC tester) assures absolute traceability because no two parts are alike
Multidrop controller for MicroLAN
Digital identification and information by momentary contact
Chip-based data carrier compactly stores information
Data can be accessed while affixed to object
Economically communicates to bus master with a single digital signal at 16.3k bits per second
Standard 16 mm diameter and 1-Wire protocol ensure compatibility with iButton family
Button shape is self-aligning with cup shaped probes
Durable stainless steel case engraved with registration number withstands harsh environments
Easily affixed with self-stick adhesive backing, latched by its flange, or locked with
ring pressed onto its rim
Presence detector acknowledges when reader first applies voltage
Meets UL#913 (4th Edit.); Intrinsically Safe Apparatus, Approved under Entity Concept for use in Class I, Division 1, Group A, B, C and D Locations

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Manufacturer

Texas Instruments

Product Category !

IC Chips

FAQs

What is DS1991L+F5?

The DS1991L+F5 is a unique iButton device with a unique 64-bit registration number and 1024-bit electrically programmable read-only memory (EPROM). It is designed by Maxim Integrated to provide secure and tamper-resistant data storage in a small, durable package.

How Does DS1991L+F5 Work?

The DS1991L+F5 functions as an electronic key or data carrier by storing information within its EPROM memory. It can be accessed using the 1-Wire communication protocol, allowing for easy integration into various applications. The iButton form factor provides physical security and durability for long-term usage.

How Many Pins does DS1991L+F5 have and What are the Functions of the Pinout Configuration?

The DS1991L+F5 is encapsulated in a stainless steel can with a single contact for communication and power. The pinout configuration includes:

Touch Contact: Single contact for both power and communication using the 1-Wire protocol.

What are the Pros and Cons of DS1991L+F5?

Pros:

Secure Data Storage: Provides secure EPROM memory for storing sensitive information.
Durable Construction: Stainless steel can encloses the device, ensuring long-term reliability.
Unique ID: Each DS1991L+F5 has a unique 64-bit ID for identification and security purposes.
1-Wire Interface: Supports the 1-Wire protocol for simple communication with host systems.
Tamper-Resistant: Designed to resist tampering and provide additional security measures.

Cons:

Single Contact Interface: Limited to a single touch contact for communication and power.
Memory Size: The 1024-bit EPROM may be insufficient for certain data storage applications.

Are There Any Equivalents/Alternatives to DS1991L+F5 for Recommendation?

The DS1990A-F5 from Maxim Integrated is a similar 1-Wire iButton with a unique ID and different memory configuration.
Alternatives to the DS1991L+F5 include the DS1963S from Maxim Integrated and the DS2430A from Maxim Integrated as well.