FD51xxT-32.768KHz

CMOS Clock Oscillator

March 2009

www.pletronics.com

425-776-1880

9

3

4

1

2

6

5

Mechanical:

Inches

mm

A

0.197 +

_0.006

5.00 +

_0.15

B

0.125 +

_0.006

3.20 +

_0.15

C

0.053 max

1.35 max

D

1

0.050

1.27

E

1

0.050

1.27

F

1

0.004

0.10

G

1

0.039

1.00

H

1

0.025

0.63

Contacts

:

Gold 11.8 µinches

0.3 µm minimum over

Nickel 50 to 350 µinches

1.27 to 8.89 µm

Not to Scale

I

1

0.020

0.50

J

1

0.004R

0.10R

K

1

0.008R

0.20R

Pad Functions:

Pad

Function

Note

1

S1/SDA

Serial Data Clock (optional V control - VCXO)

S2

Input to select 1 of 4

preprogrammed functions of

the outputs (optional)

2

S2/SCL

Serial Data

S1

3

Ground (GND)

4

Out (Y3)

Crystal reference frequency divided by 1 through 1023

PLL1 frequency divided by 1 through 1023

5V

DD

1.8V, powers internal circuitry of the oscillator. Bypass capacitor required near the

package pin.

6V

DDOUT

1.8V, 2.5V or 3.3V supply for the output buffers. Sets CMOS output level. Bypass

capacitor required near the package pin.

All unused inputs should be pulled high.