SM77H Series 3.3 V

CMOS Clock Oscillators

May 2008

www.pletronics.com

425-776-1880

2

PART NUMBER:

SM77

45

H

E

V

-XX

Part Marking:

Packaging code or blank

T250 = 250 per Tape and Reel

T500 = 500 per Tape and Reel

T1K = 1000 per Tape and Reel

PLE SM77

FF.FFF M

C YMDXX

or

PLE SM77

FF.FFF M

C YYWWXX

or

7XYWWXX

FF.FFF M

C PLE XXX

Frequency in MHz

Supply Voltage V

CC

_ 10%

Optional Enhanced OTR

Series Model

Frequency Stability

_ 50 ppm

_ 25 ppm

_ 20 ppm

Series Model

Marking Legend:

PLE = Pletronics

FF.FFF M = Frequency in MHz

YYWW or YWW or YMD = Date of Manufacture (year and week, or year-month-day)

All other marking is internal factory codes

Specifications such as frequency stability, supply voltage and operating temperature range, etc. are

not identified from the marking. External packaging labels and packing list will correctly identify the

ordered Pletronics part number.

Codes for Date Code YMD

Code

6

7

8

9

0

1

2

Year

2006

2007

2008

2009

2010

2011

2012

Code

A

B

C

D

E

F

G

H

J

K

L

M

Month

JAN

FEB

MAR

APR

MAY

JUN

JUL

AUG

SEP

OCT

NOV

DEC

Code

123456789

A

B

C

Day

123456789

10

11

12

Code

D

E

F

G

H

J

K

L

M

N

P

R

Day

13

14

15

16

17

18

19

20

21

22

23

24

Code

T

U

V

W

X

Y

Z

Day

25

26

27

28

29

30

31

Legacy Part Numbers:

‘S’

Denoted Symmetry of 45%/55% at 50% of V

the part number. We will still support part numbers with the ‘S’. For example: SM7745HV and SM7745HSV

describe the same specifications and can be used interchangeably by the customer.

-30

Denoted Output Load other than the standard 15 pF. Data sheets now reflect the specifications at all available

loads so this load designation is no longer needed. We’ll still support part numbers with this load designation.