DS1990R Datasheet - Maxim Integrated Products

DS1990R Serial Number IButton

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 gu.

DS1990R Features

* 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

DS1990R_MaximIntegratedProducts.pdf