19013 36th Ave. West
Suite H
Lynnwood, WA 98036, USA
SM1145B Series
4 Pad Leadless Surface Mount Clock Oscillator
CMOS with Enable/ Disable
Recommended for Non-Standard Specifications & Frequencies
Solder Pad Compatible to our SM11 Series, Epson SG615 & SG8002J
Standard Specifications
Overall Frequency Stability
Operating Temperature Range
Supply Voltage (Vcc)
Symmetry (Duty Cycle)
Logic Levels
Output Load
Enable/Disable Option (E/D)
SM1145B: ± 50 PPM, SM1144B: ± 25 PPM, SM1120B: ± 20 PPM over Operating Temp. Range
0 to +70°C is standard, but can be extended to
-
40 to +85°C for certain frequencies
5.0 volts and 3.3 volts available
40/60 to 60/40% is standard, but 45/55% at 50% of Vcc is also available (see Waveform 1)
Logic “1”
90% of Vcc MIN;
Logic “0”
10% of Vcc MAX
Standard load is 15pF maximum, see Test Circuit 3 (consult factory for
heavier
loads)
Output enabled when Pin #1 is open or at Logic “1”; Output disabled when Pin #1 is at Logic “0”.
Supply Current
Icc (mA) w/ 15pF load
Typical
Maximum
Rise and Fall Time
Tr & Tf (nS) w/ 15pF load
Typical
Maximum
650 kHz
–
69.999 MHz
Frequency Range
(MHz)
0.650 –
20.000 –
28.000 –
35.000 –
50.000 –
19.999
27.999
34.999
49.999
69.999
8.0
13.0
15.0
20.0
33.0
10.0
15.0
20.0
25.0
37.0
4.0
2.0
2.0
2.0
2.0
5.0
3.0
3.0
3.0
3.0
Part Numbering Guide
Packaging
Tube or
24mm tape
16mm pitch
SM11 45 B Y -- 60.0M - 30
Model
Frequency Stability
45 = ± 50 PPM
44 = ± 25 PPM
20 = ± 20 PPM
Non-Std Output Load
Blank = 15 pF max, 30 = 30 pF max, 50 = 50 pF max
Frequency in MHz
Special Specifications (choose all that apply)
Y: Std Specs (5.0V
± 10%,
0 to +70
°
C, 40/60% Symmetry)
E: Extended Operating Temperature Range (- 40 to +85
°
C)
N: Lower Ringing Noise
S: 45/55% Symmetry at 50% of Vcc
V: Supply Voltage of 3.3 volts
±10%
Consult factory for available frequencies and specs. Not all options available for all frequencies. A special part number may be assigned.
Frequency Stability is inclusive of frequency shifts due to calibration, temperature, supply voltage, shock, vibration and load
Mechanical: inches (mm)
not to scale
Solder Pads
Due to part size and factory abilities, part marking may vary from lot to lot and may contain our part number or an internal code.
.400 (10.16) MAX
Out
Vcc
.12
(3.0) .23 (5.8)
PLE
3
4
4
3
.05
(1.3)
2
.560 (14.23) MAX
GND
.195 (5.0)
MAX
1
E/D
1
2
.200 (5.08)
.15 (3.8)
Feb 2002
Pl tronics, Inc.
(425) 776 -1880, Fax: (425) 776-2760, ple-sales@pletronics.com, www.pletronics.com
12
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