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DS1990A - Serial Number iButton

General Description

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.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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AVAILABLE DS1990A Serial Number iButton General Description 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 selfaligning with mating receptacles, allowing the DS1990A to be used easily by human operators.