DS1643-70 Maxim Integrated Products, DS1643-70 Datasheet - Page 17

• Manufacturer Part Number: DS1643-70
• Description: IC RAM TIMEKEEP NV 70NS 28-EDIP
• Manufacturer: Maxim Integrated Products
• Type: Clock/Calendar/NVSRAMr

Specifications of DS1643-70

• Memory Size: 64K (8K x 8)
• Time Format: HH:MM:SS (24 hr)
• Date Format: YY-MM-DD-dd
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 28-DIP Module (600 mil), 28-EDIP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

REVISION HISTORY
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.
M a x i m I n t e g r a t e d P r o d u c t s , 1 2 0 S a n G a b r i e l D r i v e , S u n n y v a l e , C A 9 4 0 8 6 4 0 8 - 7 3 7 - 7 6 0 0
© 2010 Maxim Integrated Products
REVISION
DATE
12/09
5/10
Corrected the lead(Pb)-free part information for the -100+ versions
in the Ordering Information table.
Removed TinLead and -70 (70ns) and added -85 (85ns) in the
Ordering Information table; reduced the Absolute Maximum
Ratings max voltage; updated the soldering information; updated
AC timing to include 85ns
DESCRIPTION
17 of 17
Maxim is a registered trademark of Maxim Integrated Products, Inc.
CHANGED
DS1643/DS1643P
1, 7, 8, 9
PAGES
1