Pl tronics, Inc.
.
19013 36th Ave. W, Suite H Lynnwood, WA 98036 USA
Manufacturer of High Quality Frequency Control Products
True TTL Series
True TTL Output without Enable/Disable
Lower EMI Due to Lower Ringing Noise (Overshoot/Undershoot)
P1145 (Full Size) or ST2245 (Half Size) Metal Clock Oscillator
Available in Thru-Hole or Surface Mount Configuration
Standard Specifications
Overall Frequency Stability
Operating Temperature Range
Supply Voltage (Vcc)
Symmetry (Duty Cycle)
Logic Levels
Output Load
Ringing Noise
± 50 PPM or ± 25 PPM over Operating Temperature Range
0 to +70°C is standard, but can be extended to
-
40 to +85°C for certain frequencies
5.0 volts ± 10%
40/60 to 60/40% is standard, but 45/55% at Vcc = 1.4 volts is also available (see Waveform 1)
Logic “1”
2.4 volts MIN;
Logic “0”
0.4 volts MAX
Can drive up to 10 TTL loads + 15pF (typ. 1 ASIC), see Test Circuit 4 (consult factory for
heavier
loads)
Depends on frequency and output load. See EMI application note
Supply Current
Icc (mA)
Typical
Maximum
Rise and Fall Time
Tr & Tf (nS)
Typical
Maximum
4.000 MHz
–
60.000 MHz
Frequency Range
(MHz)
4.000
8.000
16.000
22.000
– 7.999
– 15.999
– 21.999
– 60.000
23.0
28.0
4.0
24.0
28.0
3.0
24.0
28.0
2.5
27.0
32.0
2.0
Part Numbering Guide
5.0
4.0
3.5
3.0
Portions of the part number that appear after the frequency may not be marked on part (C of C provided)
P11 45 E - 60.0M - 30 - SMD - XXX
(Internal Code or blank)
Packaging
Tube or on Pads,
SMD: Bulk
Model
P11 = Full Size
ST22 = Half Size
Frequency Stability
45 = ± 50 PPM
44 = ± 25 PPM
Surface Mount Option
Non-Std Output Load
Blank = 15 pF max, 30 = 30 pF max
Frequency in MHz
Special Specifications (choose all that apply)
Blank: Std Specs (0 to +70
°
C, 40/60% Symmetry)
E: Extended Operating Temperature Range (- 40 to +85
°
C)
P: 45/55% Symmetry at Vcc = 1.4 volts
True TTL
Page 18
8
1
.300 (7.62)
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)
.807 (20.5) MAX
.500 (12.7) MAX
PLETRONICS
not to scale
Full Size SMD Version
.492 (12.5) MAX
.492 (12.5) MAX
PLE
.492 (12.5) MAX
.354 (9.0)
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.
P1145
ST2245
Half Size SMD Version
.270 (6.87) MAX
.492 (12.5) MAX
5
.820 (20.84) MAX
.247 (6.28)
MAX
.560 (14.23) MAX
.200
(5.08)
MAX
.020
(.51)
.600 (15.24)
N.C.
.500 (12.7) MAX
GND
1
7
.031 (0.8)
.767 (19.49)
.600 (15.24)
.300 (7.62)
8 8
8
7
7
7
1
14
14
14
1
1
.250 (6.35) MAX
.250 (6.35) MAX
.236
(6.0)
MAX
.020
(.51)
.300 (7.62)
.492 (12.5) MAX
N.C.
GND
1
4
.031 (0.8)
4
Solder Pads
8
1
5
4
.300 (7.62)
.200 (5.08) TYP
.300 (7.62)
14
Vcc
8
OUT
Solder pad layout may use any combination
of pins 1, 7, 8 & 14 shown. Recommended
pad size is .12 (3.1) x .07 (1.8) typical.
8
Vcc
5
OUT
Pad (8X)
.136 x .035
(3.45) x (.89)
.200 (5.08)
.807 (20.5) MAX
.492 (12.5) MAX
Jun 2004
Pl tronics, Inc.
(425) 776 -1880, Fax: (425) 776-2760, ple-sales@pletronics.com, www.pletronics.com
18
Test/Measurement
京公网安备 11010802033920号
EEWORLD
