Pl tronics, Inc.
.
19013 36th Ave. W, Suite H Lynnwood, WA 98036 USA
Manufacturer of High Quality Frequency Control Products
SQ3345, SQ2245 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
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)
Logic Levels
Logic “1”
90% of Vcc MIN;
Logic “0”
10% of Vcc MAX
Output Load
Standard load is 15pF maximum, see Test Circuit 3 (consult factory for
heavier
loads)
Ringing Noise
Depends on frequency and output load. See EMI application note
SQ33: Enable/Disable Option
Output enabled when Pin #1 is open or at Logic “1”; Output disabled when Pin #1 is at Logic “0”.
Rise and Fall Time
(E/D)
Max. Supply Current
Frequency Range
(MHz)
650 kHz
–
69.999 MHz
0.650 –
10.001 –
26.000 –
35.000 –
50.001 –
10.000
25.999
34.999
50.000
69.999
7
10
10
20
15
25
20
30
25
35
Part Numbering Guide
Icc (mA) w/ 15pF load
3.3V
5.0V
Tr & Tf (nS) w/ 15pF load
Typical
Maximum
3.0
2.5
2.5
2.5
2.5
4.0
3.5
3.5
3.5
3.5
Portions of the part number that appear after the frequency may not be marked on part (C of C provided)
SQ33 45 V -- 60.0M - 30 - SMD - XXX
(Internal Code or blank)
Packaging
Tube or on Pads,
SMD: Bulk
Model
SQ33 with E/D
SQ22 no E/D
Frequency Stability
45 = ± 50 PPM
44 = ± 25 PPM
20 = ± 20 PPM
Surface Mount Option
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)
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%
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
Surface Mount
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.
.492 (12.5) MAX
.492 (12.5) MAX
PLE
.020
(.51)
.236 (6.0)
MAX .031 (0.8)
.300 (7.62)
.300 (7.62)
OUT
5
8
Vcc
.270 (6.87)
MAX
.492 (12.5) MAX
.492 (12.5) MAX
5
8
.300 (7.62)
.354 (9.0)
8
1
5
4
4
GND
1
4
1
July 2002
.250 (6.35)
MAX
SQ33 Pin 1 = E/D
SQ22 Pin 1 = N.C.
Pad (8X)
.136 x .035
(3.45) x (.89)
.200 (5.08)
Pl tronics, Inc.
(425) 776 -1880, Fax: (425) 776-2760, ple-sales@pletronics.com, www.pletronics.com
17
CMOS < 80 MHz
Page 11 - 18
嵌入式系统
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
