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參數資料
| 型號： | SM1145TY-FREQ-50-OUT21 |
| 廠商： | PLETRONICS INC |
| 元件分類： | XO, clock |
| 英文描述： | CRYSTAL OSCILLATOR, CLOCK, 1 MHz - 69.999 MHz, CMOS OUTPUT |
| 文件頁數： | 1/1頁 |
| 文件大小： | 37K |
| 代理商： | SM1145TY-FREQ-50-OUT21 |
SM1145T Series
4 Lead Surface Mount Plastic Clock Oscillator
CMOS with Enable/ Disable
Recommended for Non-Std Specs and Frequencies
Solder Pad Compatible to our SM11 Series, Epson SG615 & SG8002J
1.000 MHz – 69.999 MHz
Standard Specifications
Overall Frequency Stability
SM1145T: ± 50 PPM, SM1144T: ± 25 PPM over Operating Temperature Range
Operating Temperature Range
Supply Voltage (Vcc)
5.0 volts and 3.3 volts available, .01 F bypass cap recommended
Symmetry (Duty Cycle)
40/60 to 60/40% is standard, but 45/55% at 50% of Vcc is also available (see Waveform 1)
Output Load
Enable/Disable Option (E/D)
Output enabled when Pin #1 is open or at Logic “1”; Output disabled when Pin #1 is at Logic “0”.
Supply Current
Rise and Fall Time
Frequency Range
(MHz)
Typical
Maximum
Typical
Maximum
1.000 – 7.999
5.0
10.0
4.5
5.5
8.000 – 29.999
10.0
15.0
4.5
5.5
30.000 – 39.999
20.0
25.0
4.5
5.5
40.000 – 45.999
25.0
30.0
4.5
5.5
Part Numbering Guide
Model
Frequency Stability
45 = ± 50 PPM
44 = ± 25 PPM
Frequency in MHz
Special Specifications (choose all that apply)
SM11 45 T Y -- 50.0M - 30
Consult factory for available frequencies and specs. Not all options available for all frequencies. A special part number may be assigned.
Mechanical:
not to scale
inches (mm)
°
Solder Pads
46.000 – 59.999
30.0
35.0
2.5
3.5
Feb 2002
0 to +70°C is standard, but can be extended to - 40 to +85°C for certain frequencies
Y: Std Specs (5.0V ± 10%, 0 to +70 C, 40/60% Symmetry)
E: Extended Operating Temperature Range (- 40 to +85 C)
S: 45/55% Symmetry at 50% of Vcc
V: Supply Voltage of 3.3 volts ± 10%
19013 36th Ave. West Suite H Lynnwood, WA 98036, USA
Frequency Stability is inclusive of frequency shifts due to calibration, temperature, supply voltage, shock, vibration and load
.352
(8.95)
.386
(9.8)
MAX
.200 (5.08)
.512 (13.0) MAX
.300
(7.62)
.185 (4.7) MAX
1
2
3
4
(425) 776 -1880, Fax: (425) 776-2760, ple-sales@pletronics.com, www.pletronics.com
14
Pl tronics, Inc.
OUT
Vcc
GND
E/D
60.000 – 69.999
35.0
40.0
2.5
3.5
Packaging
Tube or
24mm tape
12mm pitch
Icc (mA) w/ 15pF load
Tr & Tf (nS) w/ 15pF load
Standard load is 15pF maximum, see Test Circuit 2 (consult factory for heavier loads)
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.
Logic Levels
Logic “1” 90% of Vcc MIN; Logic “0” 10% of Vcc MAX
Non-Std Output Load
Blank = 15 pF max, 30 = 30 pF max, 50 = 50 pF max
3
.15 (3.8)
1
2
4
.23
(5.8)
.05 (1.3)
.12
(3.0)
0.01 F
m
bypass capacitor
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