Pl tronics, Inc.
.
19013 36th Ave. W, Suite H Lynnwood, WA 98036 USA
Manufacturer of High Quality Frequency Control Products
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
–
650 kHz 69.999 MHz
Standard Specifications
Overall Frequency Stability
SM1145B: ± 50 PPM, SM1144B: ± 25 PPM, SM1120B: ± 20 PPM over Operating Temp. Range
-
°
Operating Temperature Range 0 to +70 C is standard, but can be extended to 40 to +85°C for certain frequencies
Supply Voltage (Vcc)
Symmetry (Duty Cycle)
Logic Levels
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
Output Load
Enable/Disable Option (E/D)
Standard load is 15 pF (typ. 1 ASIC) 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”.
Rise and Fall Time
Max. Supply Current
Icc (mA) w/ 15pF load
Frequency Range
(MHz)
Tr & Tf (nS) w/ 15pF load
3.3V
5.0V
Typical
Maximum
–
0.650 19.999
7
10
15
20
25
10
15
20
25
37
4.0
2.0
2.0
2.0
2.0
5.0
3.0
3.0
3.0
3.0
–
20.000 27.999
–
28.000 34.999
–
35.000 49.999
–
50.000 69.999
Part Numbering Guide
Portions of the part number that appear after the frequency may not be marked on part (C of C provided)
SM11 45 B Y - 60.0M - 30 - XXX (Internal Code or blank)
Packaging
Tube or
24mm tape
16mm pitch
Non-Std Output Load
Blank = 15 pF max, 30 = 30 pF max, 50 = 50 pF max
Frequency in MHz
Model
Frequency Stability
Special Specifications (choose all that apply)
45 = ± 50 PPM
44 = ± 25 PPM
20 = ± 20 PPM
°
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.
Out
Vcc
4
1
3
2
3
4
PLE
.05
(1.3)
For Best Performance,
Do NOT allow any traces other
than ground under oscillators
(Even in buried layers)
1
2
E/D
GND
.560 (14.23) MAX
.195 (4.95)
MAX
.200 (5.08)
.15 (3.8)
Jan 2003
(425) 776 -1880, Fax: (425) 776-2760, ple-sales@pletronics.com, www.pletronics.com
Pl tronics, Inc.
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