Product Summary

The DS1990A-F5+ is a rugged data carrier that acts as an electronic registration number for automatic identification. The DS1990A-F5+ consists of a factory-lasered, 64-bit ROM that includes an unique 48-bit serial number, an 8-bit CRC and an 8-bit Family Code (01h). Data is transferred serially via the 1-Wire protocol which requires only a single data lead and a ground return. Accessories permit the DS1990A-F5+ to be mounted on plastic key tabs, photo ID badges, printed circuit boards or any smooth surface of an object. Applications include access control, work-in-progress tracking, tool management and inventory control.

Parametrics

DS1990A-F5+ absolute maximum ratings: (1)Voltage on any Pin Relative to Ground:-0.5V to +7.0V; (2)Operating Temperature:-40℃ to +85℃; (3)Storage Temperature:-55℃ to +125℃.

Features

DS1990A-F5+ features: (1)Upgrade of DS1990 allows multiple Serial Number iButtons to reside on a common bus; (2)Unique 48–bit serial number; (3)Low-cost electronic key for access control; (4)8-bit CRC for checking data integrity; (5)Can be read in less than 5 ms; (6)Operating temperature range of -40℃ to +85℃; (7)Multidrop controller for MicroLAN; (8)Digital identification by momentary contact; (9)Chip-based data carrier compactly stores information; (10)Data can be accessed while affixed to an object; (11)Economically communicates to bus master; (12)with a single digital signal at 16.3k bits per second; (13)Standard 16 mm diameter and 1-WireTM protocol ensure compatibility with iButton family; (14)Button shape is self-aligning with cup-shaped probes; (15)Durable stainless steel case engraved with registration number withstands harsh environments; (16)Easily affixed with self-stick adhesive backing, latched by its flange, or locked with a ring pressed onto its rim; (17)Presence detector acknowledges when reader first applies voltage.

Diagrams

DS1990A-F5+ equivalent circuit

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
DS1990A-F5+
DS1990A-F5+

Maxim Integrated Products

Serial Number Registration Serial Number iButton

Data Sheet

0-1: $2.50
1-25: $1.67
25-50: $1.22
50-100: $1.21
DS1990A-F5+E00
DS1990A-F5+E00

Maxim Integrated Products

Serial Number Registration

Data Sheet

Negotiable 
DS1990A-F5+E4F
DS1990A-F5+E4F

Maxim Integrated Products

Serial Number Registration

Data Sheet

Negotiable