DS1340 Maxim, DS1340 Datasheet - Page 14

• Manufacturer Part Number: DS1340
• Description: The DS1340 is a real-time clock (RTC)/calendar that is pin compatible and functionally equivalent to the ST M41T00, including the software clock calibration
• Manufacturer: Maxim

I
The DS1340C 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. Exposure to reflow is limited to 2
times maximum. Ultrasonic cleaning should be avoided
to prevent damage to the crystal.
PROCESS: CMOS
SUBSTRATE CONNECTED TO GROUND
Theta-JA: 170°C/W (0.150in SO)
Theta-JC: 40°C/W (0.150in SO)
Theta-JA: 221°C/W (µSOP)
Theta-JC: 39°C/W (µSOP)
Theta-JA: 89.6°C/W (0.300in SO)
Theta-JC: 24.8°C/W (0.300in SO)
14
2
C RTC with Trickle Charger
______________________________________________________________________________________
TOP VIEW
Handling, PC Board Layout,
V
BACKUP
GND
X1
X2
1
Thermal Information
2
3
4
SO, μSOP
DS1340
Chip Information
and Assembly
8
7
6
5
V
FT/OUT
SCL
SDA
CC
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 connect-
ed to ground.
Moisture-sensitive packages are shipped from the facto-
ry dry-packed.Handling instructions listed on the pack-
age label must be followed to prevent damage during
reflow. Refer to the IPC/JEDEC J-STD-020 standard for
moisture-sensitive device (MSD) classifications.
For the latest package outline information and land patterns
(footprints), go to www.maxim-ic.com/packages. Note that a
“+”, “#”, or “-” in the package code indicates RoHS status only.
Package drawings may show a different suffix character, but
the drawing pertains to the package regardless of RoHS status.
16 SO (300 mils)
8 SO (150 mils)
PACKAGE
8 µSOP
TYPE
FT/OUT
N.C.
N.C.
N.C.
N.C.
N.C.
SCL
V
CC
PACKAGE
W16#H2
1
2
6
3
4
5
7
8
CODE
U8+1
S8+2
SO (300 mils)
Package Information
DS1340C
Pin Configurations
OUTLINE NO.
21-0041
21-0036
21-0042
16
15
14
13
12
11
10
9
SDA
GND
V
N.C.
N.C.
N.C.
N.C.
N.C.
BACKUP
PATTERN NO.
90-0096
90-0092
90-0107
LAND