SM55J Series 1.8 V
CMOS Clock Oscillators
March 2013
Mechanical:
Inches
mm
A
0.197 _+0.006
5.00 _+0.15
B
C
D
0.126 _+0.006
0.045 _+0.004
0.048
3.20 _+0.15
1.15 _+0.10
1.23
1
1
E
0.100
2.54
1
F
0.004
0.10
1
G
0.050
1.27
1
H
0.055
1.40
1
I
0.024
0.60
1
J
0.004
0.10R
Not to Scale
1
1
K
0.008
0.020R
Typical dimensions
Contacts :
Gold 11.8 to 39.4 µinches (0.3 to 1.0 µm) over Nickel 50 to 350 µinches (1.27 to 8.89 µm)
Pad
Function
Note
1
Output
When this pad is not connected the oscillator shall operate.
Enable/Disable
When this pad is logic low the output will be inhibited (high impedance state.)
Recommend connecting this pad to V if the oscillator is to be always on.
CC
2
3
4
Ground (GND)
Output
Supply Voltage
Recommend connecting appropriate power supply bypass capacitors as close as
possible.
(V )
CC
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. ]
