DS1747 Datasheet, PDF (16/18 Pages) Dallas Semiconductor – Y2K-Compliant, Nonvolatile Timekeeping RAMs

DS1747/DS1747P Y2K-Compliant, Nonvolatile Timekeeping RAMs
PACKAGE INFORMATION (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package
outline information, go to www.maxim-ic.com/DallasPackInfo.)
34-PIN PowerCap
PKG DIM
MODULE
MIN NOM MAX
A IN 0.920 0.925 0.930
B IN 0.980 0.985 0.990
C IN
—
— 0.080
D IN 0.052 0.055 0.058
E IN 0.048 0.050 0.052
F IN 0.015 0.020 0.025
G IN 0.025 0.027 0.030
NOTE: DALLAS SEMICONDUCTOR RECOMMENDS THAT POWERCAP MODULE
BASES EXPERIENCE ONE PASS THROUGH SOLDER REFLOW ORIENTED WITH THE
LABEL SIDE UP (“LIVE-BUG”).
NOTE: 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.
COMPONENTS AND PLACEMENT MAY VARY FROM EACH DEVICE TYPE.
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