SM44T Series 1.8 V
CMOS Clock Oscillators
September 2008
Mechanical:
Inches
A
0.125 +0.006
_
0.098 +0.006
_
0.041 +0.004
_
0.008
0.030
0.004
0.037
mm
3.20 +0.15
_
2.50 +0.15
_
1.05 +0.10
_
0.20R
0.75
0.10
0.95
4
3
1
2
B
C
D
1
E
1
F
1
G
1
Not to Scale
1
Typical dimensions
Contacts :
Gold 11.8 µinches
0.3 µm minimum over Nickel 50 to 350 µinches
1.27 to 8.89 µm
Pad
1
Function
Output
Enable/Disable
Ground (GND)
Output
Supply Voltage
(V
CC
)
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
CC
if the oscillator is to be always on.
2
3
4
Recommend connecting appropriate power supply bypass capacitors as close as
possible.
Layout and application information
For Optimum Jitter Performance, Pletronics recommends:
•
a ground plane under the device
•
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.
www.pletronics.com
425-776-1880
6
PLETRONICS [ PLETRONICS, INC. ]
