DS1643-85+ Maxim Integrated Products, DS1643-85+ Datasheet - Page 14

• Manufacturer Part Number: DS1643-85+
• Description: IC RAM TIMEKEEP NV 85NS 28-EDIP
• Manufacturer: Maxim Integrated Products
• Type: Clock/Calendar/NVSRAMr

Specifications of DS1643-85+

• 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: Lead free / RoHS Compliant

DS1643P
14 of 17
NOTE: MAXIM RECOMMENDS THAT POWERCAP MODULE
BASES EXPERIENCE ONE PASS THROUGH SOLDER
REFLOW ORIENTED WITH THE LABEL SIDE UP (“LIVE-
BUG”).
HAND SOLDERING AND TOUCH-UP: DO NOT TOUCH OR
APPLY THE SOLDERING IRON TO LEADS FOR MORE THAN
3 SECONDS.
TO SOLDER, APPLY FLUX TO THE PAD, HEAT THE LEAD
FRAME PAD AND APPLY SOLDER. TO REMOVE THE PART,
APPLY FLUX, HEAT THE LEAD FRAME PAD UNTIL THE
SOLDER REFLOWS AND USE A SOLDER WICK TO
REMOVE SOLDER.
PKG
DIM
A
B
C
D
G
E
F
0.920
0.980
0.052
0.048
0.015
0.025
MIN
-
INCHES
0.925
0.985
0.055
0.050
0.020
0.027
NOM
-
0.930
0.990
0.080
0.058
0.052
0.025
0.030
MAX
DS1643/DS1643P