SM4445TW-40.0M [PLETRONICS]
CMOS Output Clock Oscillator, 40MHz Max;
| 型号： | SM4445TW-40.0M |
| 厂家： | 
PLETRONICS, INC. |
| 描述： | CMOS Output Clock Oscillator, 40MHz Max |
| 文件： | 总1页 (文件大小：81K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Pl tronics, Inc.
.
19013 36th Ave. W, Suite H Lynnwood, WA 98036 USA
Manufacturer of High Quality Frequency Control Products
PRELIMINARY SPEC
SM4445T Series
4 Pad 3.2 x 2.5mm Leadless Surface Mount Ceramic Clock Oscillator
CMOS with Enable/ Disable
Fundamental or 3rd Overtone Crystal Used
Contact Factory for Developed Frequencies
Standard Specifications
Overall Frequency Stability
SM4445T: ± 50 PPM, SM4444T: ± 25 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
2.5 volts and 3.3 volts available, .01 μF bypass cap recommended
45/55% at 50% of Vcc (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 2 (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 (Tr & Tf)
Input Current (Icc)
Stand-by Current
5 ns maximum
10 mA maximum
50 uA maximum
Part Numbering Guide
Portions of the part number that appear after the frequency may not be marked on part (C of C provided)
SM44 45 T E V - 40.0M - XX (Internal Code or blank)
Packaging
Tray or
8mm tape
4mm pitch
Model
Frequency in MHz
Frequency Stability
Supply Voltage (Vcc)
V: 3.3 volts ±10%
W: 2.5 volts ± 10%
44 = ± 25 PPM
45 = ± 50 PPM
Optional Operating Temperature Range
NOTE: SM44xxTSV and SM44xxTV denote the same specs.
‘S’ means 45/55% symmetry which is the standard.
E: - 40 to +85° C
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
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.
Mechanical: inches (mm)
not to scale
.03 (0.8)
For Best Performance,
Do NOT allow any traces other
than ground under oscillators
(Even in buried layers)
GND
OUT
3
2
2
3
.039 (1.0)
.051 (1.3)
1
4
4
1
0.01mF
bypass capacitor
E/D
Vcc
.098 (2.5 ± 0.1)
.039 (1.0)
MAX
.043 (1.1)
.036 (0.9)
Mar 2006
(425) 776 -1880, Fax: (425) 776-2760, ple-sales@pletronics.com, www.pletronics.com
Pl tronics, Inc.
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