DS1990R-F5#

DS1990R-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. It 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 DS1990R to be used easily by human operators. Typical applications include access control, work-in-progress tracking, tool management, 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
• Presence detector acknowledges when reader first applies voltage
• 1-wire pullup voltage range from 2.8 to 6V at TA=-40°C to +85°C
• F5 iButton package
• Operating temperature range from -40°C to 85°C

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