s3881

S3881 - 32.768K
CMOS Clock Oscillator
July 2007
• The Pletronics’ S3881 is a quartz crystal
controlled precision square wave generator with
a CMOS output.
• The package is designed for high density
surface mount designs.
• This is a low cost mass produced oscillator.
• Tape and Reel packaging is available.
• 32.768 kHz
• 2.5 x 4.0 mm LCC Ceramic Package
• Enable/Disable Function on pad 1 with low
power consumption
• Start-up Time of 3 Seconds or less
Pletronics Inc. certifies this device is in accordance with the
RoHS 6/6 (2002/95/EC) and WEEE (2002/96/EC) directives.
Pletronics Inc. guarantees the device does not contain the following:
Cadmium, Hexavalent Chromium, Lead, Mercury, PBB’s, PBDE’s
Weight of the Device: 0.09 grams
Moisture Sensitivity Level: 1 As defined in J-STD-020C
Second Level Interconnect code: e4
Absolute Maximum Ratings:
Parameter
Unit
VCC Supply Voltage
-0.5V to +7.0V
Vi
Input Voltage
-0.5V to VCC + 0.5V
Vo
Output Voltage
-0.5V to VCC + 0.5V
Thermal Characteristics
The maximum die or junction temperature is 155oC
The thermal resistance junction to board is 30 to 50oC/Watt depending on the solder pads, ground plane
and construction of the PCB.
Product information is current as of publication date. The product conforms
to specifications per the terms of the Pletronics standard warranty. Production
processsing does not necessarily include testing of all parameters.
Copyright © 2006, 2007, Pletronics Inc.
S3881 - 32.768K
CMOS Clock Oscillator
July 2007
Part Number:
S3881
- 32.768K
-XX
Packaging code or blank
T250 = 250 per cut Tape
T500 = 500 per cut Tape
T1K = 1000 per Tape and Reel
Frequency in kHz
Series Model
Part Marking:
Pywws
32.76
or Pymd
32.76
Where:
yywws or ymd = Date code
Codes for Date Code YMD
Code
Year
6
2006
Code
A
JAN
Month
Code
Day
Code
Day
Code
Day
7
2007
8
2008
B
FEB
9
2009
C
MAR
D
APR
E
MAY
0
2010
F
JUN
1
2011
2
2012
G
JUL
H
AUG
J
SEP
K
OCT
L
NOV
M
DEC
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
A
10
B
11
C
12
D
13
E
14
F
15
G
16
H
17
J
18
K
19
L
20
M
21
N
22
P
23
R
24
T
25
U
26
V
27
W
28
X
29
Y
30
Z
31
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S3881 - 32.768K
CMOS Clock Oscillator
July 2007
Reliability: Environmental Compliance
Parameter
Condition
Mechanical Shock
MIL-STD-883 Method 2002, Condition B
Vibration
MIL-STD-883 Method 2007, Condition A
Solderability
MIL-STD-883 Method 2003
Thermal Shock
MIL-STD-883 Method 1011, Condition A
ESD Rating
Model
Minimum Voltage
Conditions
Human Body Model
1500
MIL-STD-883 Method 3115
Charged Device Model
1000
JESD 22-C101
Package Labeling
Label is 1" x 2.6" (25.4mm x 66.7mm)
Font is Courier New
Bar code is 39-Full ASCII
www.pletronics.com
Label is 1" x 2.6" (25.4mm x 66.7mm)
Font is Arial
425-776-1880
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S3881 - 32.768K
CMOS Clock Oscillator
July 2007
Electrical Specification for Vcc 1.3V to 5.5V over - 40 to +85°C
Item
Min
Frequency
Typ
Max
32.768
Unit
Condition
kHz
Frequency Calibration Tolerance
-10
0
+30
ppm
at VCC = 3.3V and 25 oC
Frequency Stability *
-100
-
+30
ppm
when operating at -20 to +70 oC
-200
-
+30
ppm
when operating at -40 to +85 oC
0
0.5
2.0
ppm
for VCC range of 2.3 V to 5.5V
Frequency versus Supply
Output Waveform
CMOS
Output High Level
90
-
-
%
of VCC
(See load circuit)
Output Low Level
-
-
10
%
of VCC
(See load circuit)
Output TRISE and TFALL
-
50
200
nS
45
50
55
%
CLOAD = 15pF TR / TF 10% to 90% and
D.C. at 50% point of VCC
(See load circuit)
V disable
-
-
10
%
of VCC applied to pad 1
V enable
90
-
-
%
of VCC applied to pad 1
-10
-
+10
uA
Pad 1 low, device disabled
-10
-
+10
uA
-
0.8
0.9
uA
VCC = 1.3 V
-
1.2
1.5
uA
VCC = 3.3 V
-
2.2
2.6
uA
VCC = 5.5 V
-
1.9
2.3
uA
VCC = 1.3 V
-
4.3
5.2
uA
VCC = 3.3V
-
7.5
9.0
uA
VCC = 5.5V
Standby Current ICC
-
-
200
nA
Pad 1 low, device disabled at 25 oC
Enable time
-
-
100
nS
Time for output to reach a logic state
Disable time
-
-
100
nS
Time for output to reach a high Z state
Start up time
Enable time
-
0.9
3
S
Time for output to reach specified
frequency
-40
-
+85
Output Symmetry
Output leakage
VOUT = VCC
VOUT = 0V
Supply Current (ICC)
Operating Temperature Range
CLOAD = 1 pF
CLOAD = 15 pF
o
C
o
Storage Temperature Range
-55
+125
C
*For all supply voltages, load changes, aging for 1 year, shock, vibration and temperatures
Specifications with Pad 1 E/D open circuit unless otherwise stated.
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425-776-1880
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S3881 - 32.768K
CMOS Clock Oscillator
July 2007
Typical Frequency versus Temperature Characteristics
0
-20
Deviation (ppm)
-40
-60
-80
-100
-120
-140
-160
-45
-35
-25
-15
-5
5
15
25
35
45
55
65
75
85
Temperature (C)
Load Circuit and Test Waveform
Symmetry
Vhigh
90% * Vcc
50% * Vcc
10% * Vcc
Vlow
Ground
Trise
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Tfall
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S3881 - 32.768K
CMOS Clock Oscillator
July 2007
Mechanical:
Inches
4
1
6
7
3
Contacts :
Gold 11.8 µinches 0.3 µm minimum over
Nickel 50 to 350 µinches 1.27 to 8.89 µm
Pad
2
mm
A
0.098 +
_ 0.008
2.5 +
_ 0.20
B
0.157 +
_ 0.008
4.0 +
_ 0.20
C
0.039 +
_ 0.004
1.0 +
_ 0.10
D1
0.035
0.9
E1
0.039
1.0
F1
0.047
1.20
G1
0.016D
0.40D
1
Typical dimensions
Not to Scale
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 VCC if the oscillator is to be always on.
2
Ground (GND)
3
Output
4
Supply Voltage
(VCC)
Recommend connecting appropriate power supply bypass capacitors as close as
possible.
6
Internal Connection
Do not connect to this pad
7
Internal Connection
Do not connect to this pad
Layout and application information
For Optimum Jitter Performance, Pletronics recommends:
•
a ground plane under the device while avoiding connection to the two dot pads on the bottom. Use
the PCB solder mask to isolate the two dot pads
•
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.
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6
S3881 - 32.768K
CMOS Clock Oscillator
July 2007
Temperature (°C)
Reflow Cycle (typical for lead free processing)
260°C Maximum
10 Seconds Maximum
250
215°C±10°C
200
175°C±10°C
150
100
Approximately 50 Seconds
120 to 160 Seconds
Allowed rate of temperature change
Maximum 4°C per second
The part may be reflowed 2 times without degradation.
Tape and Reel: available for quantities of 1000 per reel, cut tape for < 1000
Constant Dimensions Table 1
Tape
Size
D0
8mm
D1
Min
E1
P0
1.0
S1
Min
T
Max
0.6
0.6
T1
Max
2.0
+0.05
_
12mm
1.5
1.5
1.75
4.0
16mm
+0.1
-0.0
1.5
_
+0.1
_0.1
+
24mm
P2
0.1
2.0
_
+0.1
1.5
Variable Dimensions Table 2
Tape
Size
B1
Max
E2 Min
F
P1
T2
Max
W
Max
Ao, Bo &
Ko
12 mm
12.1
14.25
7.5 _
+0.1
8.0 +
_0.1
8.0
16.3
Note 1
Note 1: Embossed cavity to conform to EIA-481-B
Dimensions in mm
Not to scale
REEL DIMENSIONS
A
B
inches
7.0
10.0
13.0
mm
177.8
254.0
330.2
inches
2.50
4.00
3.75
mm
63.5
101.6
95.3
Tape
Width
12.4
+2.0
-0.0
12.0
C
mm
D
mm
13.0 +0.5 / -0.2
12.4
+2.0
-0.0
12.4
+2.0
-0.0
Reel dimensions may vary from the above
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S3881 - 32.768K
CMOS Clock Oscillator
July 2007
IMPORTANT NOTICE
Pletronics Incorporated (PLE) reserves the right to make corrections, improvements, modifications and
other changes to this product at anytime. PLE reserves the right to discontinue any product or service
without notice. Customers are responsible for obtaining the latest relevant information before placing
orders and should verify that such information is current and complete. All products are sold subject to
PLE’s terms and conditions of sale supplied at the time of order acknowledgment.
PLE warrants performance of this product to the specifications applicable at the time of sale in accordance
with PLE’s limited warranty. Testing and other quality control techniques are used to the extent PLE
deems necessary to support this warranty. Except where mandated by specific contractual documents,
testing of all parameters of each product is not necessarily performed.
PLE assumes no liability for application assistance or customer product design. Customers are
responsible for their products and applications using PLE components. To minimize the risks associated
with the customer products and applications, customers should provide adequate design and operating
safeguards.
PLE products are not designed, intended, authorized or warranted to be suitable for use in life support
applications, devices or systems or other critical applications that may involve potential risks of death,
personal injury or severe property or environmental damage. Inclusion of PLE products in such
applications is understood to be fully at the risk of the customer. Use of PLE products in such applications
requires the written approval of an appropriate PLE officer. Questions concerning potential risk
applications should be directed to PLE.
PLE does not warrant or represent that any license, either express or implied, is granted under any PLE
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process which PLE product or services are used. Information published by PLE regarding third-party
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or other intellectual property of the third party, or a license from PLE under the patents or other intellectual
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without alteration and is accompanied by associated warranties, conditions, limitations and notices.
Reproduction of this information with alteration is an unfair and deceptive business practice. PLE is not
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PLE for that product or service voids all express and implied warranties for the associated PLE product or
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Contacting Pletronics Inc.
Pletronics Inc.
19013 36th Ave. West
Lynnwood, WA 98036-5761 USA
Tel: 425-776-1880
Fax: 425-776-2760
E-mail: [email protected]
URL: www.pletronics.com
Copyright © 2006, 2007, Pletronics Inc.
www.pletronics.com
425-776-1880
8