SM76H Series 2.5 V
CMOS Clock Oscillators
March 2008
Part Number:
SM76 45
H
E
W - 50.0M
-XX
Part Marking:
Packaging code or blank
PLE
T250 = 250 per Tape and Reel
T500 = 500 per Tape and Reel
T1K = 1000 per Tape and Reel
SM76
FF.FFF M
C YMDXX
Frequency in MHz
or
Supply Voltage VCC
W = 2.5V +_ 10%
PLE SM77
FF.FFF M
C YMDXX
Optional Enhanced OTR
Blank = Temp. range -10 to +70oC
E = Temp. range -40 to +85oC
Series Model
Frequency Stability
45 = +_ 50 ppm
44 = +_ 25 ppm
20 = +_ 20 ppm
Series Model
Marking Legend:
PLE = Pletronics
FF.FFF M = Frequency in MHZ
YMD = Date of Manufacture (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
2006
2007
2008
2009
2010
2011
2012
Year
Code
Month
A
B
C
D
E
F
G
H
J
K
L
M
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
Code
1
1
2
2
3
3
F
4
5
6
6
7
8
8
9
9
A
10
N
B
11
P
C
12
R
4
5
H
7
K
Day
Code
Day
D
E
G
16
W
28
J
L
M
21
13
T
14
U
15
V
17
X
18
Y
19
Z
20
22
23
24
Code
Day
25
26
27
29
30
31
Legacy Part Numbers:
‘S’ Denoted Symmetry of 45%/55% at 50% of VCC. This is now the standard Duty Cycle and is no longer needed in
the part number. We will still support part numbers with the ‘S’. For example SM7645HW and SM7645HSW
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 will still support part numbers with this load designation.
www.pletronics.com
425-776-1880
2
PLETRONICS [ PLETRONICS, INC. ]
