ds1339c Maxim Integrated Products, Inc., ds1339c Datasheet - Page 19

• Manufacturer Part Number: ds1339c
• Description: Ds1339, Ds1339c, Ds1339u I?c Serial Real-time Clock
• Manufacturer: Maxim Integrated Products, Inc.

HANDLING, PC BOARD LAYOUT, AND ASSEMBLY
The DS1339C package contains a quartz tuning-fork crystal. Pick-and-place equipment may be used, but
precautions should be taken to ensure that excessive shocks are avoided. Ultrasonic cleaning should be avoided
to prevent damage to the crystal.
Avoid running signal traces under the package, unless a ground plane is placed between the package and the
signal line. All N.C. (no connect) pins must be connected to ground.
The leaded SO package may be reflowed as long as the peak temperature does not exceed 240°C. Peak reflow
temperature (≥ 230°C) duration should not exceed 10 seconds, and the total time above 200°C should not exceed
40 seconds (30 seconds nominal). Exposure to reflow is limited to 2 times maximum.
The RoHS SO package may be reflowed using a reflow profile that complies with JEDEC J-STD-020 lead-free
assembly.
Moisture-sensitive packages are shipped from the factory dry-packed. Handling instructions listed on the package
label must be followed to prevent damage during reflow. Refer to the IPC/JEDEC J-STD-020B standard for
moisture-sensitive device (MSD) classifications.
PIN CONFIGURATIONS
CHIP INFORMATION
TRANSISTOR COUNT: 11,325
PROCESS: CMOS
THERMAL AND PACKAGE INFORMATION
For the latest package outline information, go to
Maxim/Dallas Semiconductor cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim/Dallas Semiconductor product.
No circuit patent licenses are implied. Maxim/Dallas Semiconductor 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
µSOP
SO
TOP VIEW
PART
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V
BACKUP
GND
X1
X2
THETA-J
(°C/W)
µSOP
DS1339
229
73
A
V
SCL
SDA
SQW/INT
CC
THETA-J
(°C/W)
39
23
C
© 2006 Maxim Integrated Products
CONDITIONS
www.maxim-ic.com/DallasPackInfo
Typical
19 of 19
TOP VIEW
PACKAGE OUTLINE
56-G4009-001
SQW/INT
21-0036
SCL
V
N.C.
N.C.
N.C.
N.C.
N.C.
CC
SO (300 mils)
DS1339 I
DS1339C
.
2
C Serial Real-Time Clock
SDA
GND
N.C.
N.C.
N.C.
N.C.
N.C.
V
BAC UP
K