DS1990R View Datasheet(PDF) - Maxim Integrated

Part Name

Description

Manufacturer

DS1990R

Serial Number iButton

Maxim Integrated 

Serial Number iButton

Revision History

REVISION REVISION

NUMBER DATE

DESCRIPTION

0

5/05 Initial release

1

8/06 Reworded the UL#913 bullet to “Designed to meet...”

2

8/09

Updated the Ordering Information table to include RoHS-compliant packages; removed

the UL#913 bullet from the Common iButton Features section

Created newer template-style data sheet; in the Electrical Characteristics table, deleted

the Output High Voltage parameter, moved the 1-Wire Pullup voltage parameter from

3

8/10 table header to table body, changed VILMAX from 0.8V to 0.3V, added Note 14 to the tW0L

specification, changed tW1LMAX from 15μs –
to 15μs, and added more details to Notes

14 and 15; added the epsilon timing to the Write-Zero Time Slot in Figure 7

PAGES

CHANGED

—

1

1

2, 3, 8

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are

implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

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© 2010 Maxim Integrated Products

Maxim is a registered trademark of Maxim Integrated Products, Inc.

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