DS1990A-F5+

DS1990A-F5+ is a serial number iButton®. It 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. 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. Typical applications include access control, work-in-progress tracking, tool management, and inventory control.

• Can be read in less than 5ms
• 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 host 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
• 1-wire pullup voltage range from 2.8 to 6V
• F5 iButton package
• Temperature range from -40°C to 85°C

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