SM44T Series 2.5 V

CMOS Clock Oscillators

September 2008

www.pletronics.com

425-776-1880

6

3

4

2

1

Mechanical:

Inches

mm

A

0.125 +

_0.006

3.20 +

_0.15

B

0.098 +

_0.006

2.50 +

_0.15

C

0.041 +

_0.004

1.05 +

_0.10

D

1

0.008

0.20R

E

1

0.030

0.75

F

1

0.004

0.10

G

1

0.037

0.95

Not to Scale

Contacts :

Gold 11.8 µinches

0.3 µm minimum over Nickel 50 to 350 µinches

1.27 to 8.89 µm

Pad

Function

Note

1

Output

Enable/Disable

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

2

Ground (GND)

3

Output

4

Supply Voltage

(V

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.