Maxim Integrated DS1990R
The DS1990R Serial Number iButton is a rugged data carrier that serves as an electronic registration number for automatic identification. The durable stainless-steel iButton package is highly resistant to environmental hazards such as dirt, moisture, and shock. Its compact coin-shaped profile is self-aligning with mating receptacles, allowing the DS1990R to be used easily by human operators.| Part No. | DS1990R |
|---|---|
| Datasheet | DS1990R Download |
| Manufacturer |  Maxim Integrated |
| Description | Serial Number IButton |
| Buy | Stock & Price |
GENERAL DESCRIPTION
The DS1990R Serial Number iButton is a rugged data carrier that serves as an electronic registration number for automatic identification. Data is transferred serially through the 1-Wire protocol, which requires only a single data lead and a ground return. Every DS1990R is factory lasered with a guaranteed unique 64-bit registration number that allows for absolute traceability. Accessories permit the DS1990R iButton to be mounted on almost any object, including containers, pallets, and bags. The DS1990R is a fully compatible variant of the DS1990A. In applications where a presence pulse on contact is critical the DS1990R should be preferred over the DS1990A. SPECIALFEATURES
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● Upgrade of DS1990A Guarantees Presence Pulse on Contact Can be Read in Less Than 5ms Operating Range: 2.8V to 6.0V, -40°C to +85°C COMMON iButton
FEATURES
● Unique Factory-Lasered 64-Bit Registration Number Assures Error-Free Device Selection and Absolute Traceability Because No Two Parts...
