The DS1990A 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 DS1990A is factory lasered with a guaranteed
unique 64-bit registration number that allows for
absolute traceability. 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 DS1990A to be
used easily by human operators. Accessories permit
the DS1990A iButton to be mounted on almost any
object, including containers, pallets, and bags.
主な特長
アプリケーション/用途
Can Be Read in Less Than 5ms
Operating Range: 2.8V to 6.0V, -40°C to +85°C
Unique Factory-Lasered 64-Bit Registration
Number Assures Error-Free Device Selection
and Absolute Traceability Because No Two Parts
are Alike
Built-In Multidrop Controller for 1-Wire Net
Digital Identification by Momentary Contact
Data can be Accessed While Affixed to Object
Economically Communicates to Bus Master with
a Single Digital Signal at 16.3kbps
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 a Ring
Pressed Onto its Rim
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
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