s3880-32.768k Pletronics, Inc., s3880-32.768k Datasheet - Page 5

• Manufacturer Part Number: s3880-32.768k
• Description: S3880 - 32.768k Cmos Clock Oscillator
• Manufacturer: Pletronics, Inc.

Mechanical:
IMPORTANT: The pin assignments are different from many clock oscillators
Layout and application information
For Optimum Jitter Performance, Pletronics recommends:
• a ground plane under the device while avoiding connection to the two dot pads on the bottom. Use the
• no large transient signals (both current and voltage) should be routed under the device
• do not layout near a large magnetic field such as a high frequency switching power supply
• do not place near piezoelectric buzzers or mechanical fans.
Contacts :
Pad
PCB solder mask to isolate the two dot pads
Gold 11.8 µinches
Nickel 50 to 350 µinches
1
2
3
4
www.pletronics.com
Function
Output
Ground (GND)
Enable/Disable
Output
Supply Voltage
(V
CC
)
0.3 µm minimum over
1.27 to 8.89 µm
Note
When this pad is not connected the oscillator shall operate.
When this pad is logic low the output will be inhibited (high impedance state.)
Recommend connecting this pad to V
Recommend connecting appropriate power supply bypass capacitors as close as
possible.
425-776-1880
4
3
2
1
Not to Scale
CMOS Clock Oscillator
CC
if the oscillator is to be always on.
S3880 - 32.768K
A
B
C
D
E
1
1
Inches
0.098 + _ 0.008
0.157 + _ 0.008
0.039 + _ 0.004
0.035
0.039
1
Typical dimensions
August 2009
1.5 + _ 0.15
3.2 + _ 0.15
1.0 max
0.50
0.75
5
mm