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参数资料
| 型号： | SQ3344-FREQ3-SMD |
| 厂商： | PLETRONICS INC |
| 元件分类： | XO, clock |
| 英文描述： | CRYSTAL OSCILLATOR, CLOCK, 26 MHz - 34.999 MHz, CMOS OUTPUT |
| 文件页数： | 1/1页 |
| 文件大小： | 54K |
| 代理商： | SQ3344-FREQ3-SMD |
SQ3345, SQ2245 CMOS Series
Half Size (8 Pin DIP) Metal Clock Oscillator
SQ3345: CMOS with Enable/ Disable, SQ2245 without Enable/Disable
Lower Ringing Noise Option Available to Reduce EMI
Available in Thru-Hole or Surface Mount Configuration
650 kHz – 69.999 MHz
Standard Specifications
Overall Frequency Stability
± 50 PPM, ± 25 PPM, ± 20 PPM over Operating Temperature 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)
5.0 volts and 3.3 volts available
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
SQ33: 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”.
Rise and Fall Time
Frequency Range
(MHz)
Typical
Maximum
0.650 – 10.000
7
10
3.0
4.0
10.001 – 25.999
10
20
2.5
3.5
26.000 – 34.999
15
25
2.5
3.5
35.000 – 50.000
20
30
2.5
3.5
Part Numbering Guide
SQ33 45 V -- 60.0M - 30 - SMD - XXX (Internal Code or blank)
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)
50.001 – 69.999
25
35
2.5
3.5
Frequency Stability is inclusive of frequency shifts due to calibration, temperature, supply voltage, shock, vibration and load
Surface Mount
Solder Pads
(425) 776 -1880, Fax: (425) 776-2760, ple-sales@pletronics.com, www.pletronics.com
15
Jun 2004
Pl tronics, Inc.
Standard load is 15 pF (typ. 1 ASIC) maximum, see Test Circuit 3 (consult factory for heavier loads)
Tr & Tf (nS) w/ 15pF load
Packaging
Tube or on Pads,
SMD: Bulk
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.
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.
Model
Frequency Stability
45 = ± 50 PPM
44 = ± 25 PPM
Frequency in MHz
Special Specifications (choose all that apply)
Blank: 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%
Surface Mount Option
Non-Std Output Load
Blank = 15 pF max, 30 = 30 pF max
20 = ± 20 PPM
Logic Levels
Logic “1” 90% of Vcc MIN; Logic “0” 10% of Vcc MAX
SQ33 with E/D
SQ22 no E/D
Pl tronics, Inc.
19013 36th Ave. W, Suite H Lynnwood, WA 98036 USA
Manufacturer of High Quality Frequency Control Products
.
Portions of the part number that appear after the frequency may not be marked on part (C of C provided)
Max. Supply Current
Icc (mA) w/ 15pF load
3.3V
5.0V
Ringing Noise
Depends on frequency and output load. See EMI application note
0.200 (5.08)
0.300 (7.62)
8
4
5
0.136 x 0 .035
0.354
(9.0)
(3.45) x (.89)
Pad (8X)
0 .236 (6.0)
MAX
0 .020
(.51)
0 .250 (6.35)
MAX
0.492 (12.5) MAX
0.300 (7.62)
PLE
0.492
(12.5)
MAX
0.300
(7.62)
1
4
8
5
SQ33 Pin 1 = E/D
SQ22 Pin 1 = N.C.
Vcc
OUT
GND
0.031 (0.8)
0.270 (6.87)
MAX
1
4
8
5
1
0.492 (12.5) MAX
0.492
(12.5)
MAX
0 .236 (6.0)
MAX
0 .020
(.51)
0 .250 (6.35)
MAX
0.492 (12.5) MAX
0.300 (7.62)
PLE
0.492
(12.5)
MAX
0.300
(7.62)
1
4
8
5
0.031 (0.8)
0.200 (5.08)
0.300 (7.62)
8
4
5
0.136 x 0 .035
0.354
(9.0)
(3.45) x (.89)
Pad (8X)
0.270 (6.87)
MAX
1
4
8
5
1
0.492 (12.5) MAX
0.492
(12.5)
MAX
CMOS
<
80
MHz
Page
11A
-
16
PLE
SQ3XESV
30.000M
YYWWXX
PLE
SQ33XXESV
30.000M
YYWWXX
Marking Examples and Explanation
PLE = Pletronics
SQ3 = Model Code
X = Frequency Stability
ESV = Applicable Specs (some internal)
Frequency in MHz
YWWX = Date Code
New
Old
1
E/D
4
GND
5
OUT
8
Vcc
PIN
SIGNAL
THRU HOLE
- SMD
SOLDER PADS
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