Datasheet

DS1990A
Serial Number i
Button
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.
10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2008 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.
Revision History
REVISION
DATE
DESCRIPTION
PAGES
CHANGED
033005
Redid the formatting based on newer template style. Also deleted the 0F Read ROM
command and added a note about presence pulse criteria.
1–8
Created newer template-style data sheet. All
Updated Ordering Information with lead-free part numbers. 1
Deleted Meets UL 913 (4th Edit); Intrinsically Safe Apparatus: Approved Under Entity
Concept for Use in Class I, Division I, Group A, B, C, and D from the Common i
Button
Features and i
Button Can Physical Specification sections.
1, 3
Updated Electrical Characteristics table:
Deleted Output High Voltage parameter.
Moved 1-Wire Pullup voltage parameter from table header to table body.
Changed V
ILMAX
from 0.8V to 0.3V.
Added Note 14 to the t
W0L
specification.
Changed t
W1LMAX
from 15μs –  to 15μs.
2
10/08
Added the epsilon timing to the Write-Zero Time Slot in Figure 7. 8