Crystal Oscillator. ST2244 Datasheet

ST2244 Oscillator. Datasheet pdf. Equivalent


Pletronics ST2244
www.DataSheet4U.com
ST2200 SERIES
n TRUE TTL OUTPUT
n LOWER EMI DUE TO LOWER RINGING NOISE (OVERSHOOT/ UNDERSHOOT)
n 8-PIN (HALF SIZE) THRU-HOLE OSCILLATORS IN METAL PACKAGE
n AVAILABLE IN SURFACE MOUNT CONFIGURATION
STANDARD SPECIFICATIONS:
Frequency Range
Frequency Stability over Operating
Temperature Range
Operating Temperature Range
Input Voltage (Vcc)
Symmetry (Duty Cycle)
(See next page for definition.)
Input Current (Icc) & Rise and Fall Time
(Tr & Tf) between 0.4V and 2.4V
Logic “1” & Logic “0” (See next page.)
Output Load
Ringing Noise
Packaging
4.000 – 60.000 MHz (Consult factory for specific available frequencies)
± 50 PPM is standard, but ± 25 PPM is also available.
0 - 70 °C is standard, but can be extended to -40 to +85°C.
5 Volt ± 10%
40/60 - 60/40% is standard, but 45/55% symmetry at Vcc=1.4V is
also available.
Depends on frequency and output load. See next page.
2.4V MIN.; 0.4V MAX.
Up to 10 TTL loads +15 pF
Depends on frequency and output load. See EMI application note.
33 parts per tube, SMD: Tape and Reel TBD
PART NUMBERING GUIDE:
n The Pletronics part number for an ST2200 series oscillator consists of the following 4 elements:
1. Overall Frequency Stability over Operating Temperature Range:
ST2245: ± 50 PPM;
ST2244: ± 25 PPM
2. Optional Alphabet Designator for Special Requirement:
ST2245: standard specifications;
ST2245E: operating temperature range of -40 to +85°C;
ST2245P: 45/55% symmetry at Vcc=1.4V;
(There are other alphabet designators not listed here.)
3. Frequency of Operation in MHz
4. Optional Surface Mount Configuration – SMD
EXAMPLES: ST2245E-10.000 MHz; ST2245P-10.000 MHz, ST2244-10.000 MHz-SMD
n When customer’s requirements are non-standard, a special engineering part number will be assigned.
(continued)
Telephone: (425) 776-1880, Fax: (425) 776-2760, e-mail: ple-sales@pletronics.com
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ST2244 Datasheet
Recommendation ST2244 Datasheet
Part ST2244
Description (ST2244 / ST2245) ST2000 Series Crystal Oscillator
Feature ST2244; www.DataSheet4U.com ST2200 SERIES n n n n TRUE TTL OUTPUT LOWER EMI DUE TO LOWER RINGING NOISE (OVE.
Manufacture Pletronics
Datasheet
Download ST2244 Datasheet




Pletronics ST2244
ST2200 SERIES
Input Current (Icc), Rise and Fall time with 15pF Load & Jitter
Frequency Range
(MHz)
4.000 – 7.999
8.000 – 15.999
16.000 – 21.999
22.000 – 60.000
Icc (mA)
Typical
23.0
24.0
24.0
27.0
Maximum
28.0
28.0
28.0
32.0
Tr & Tf (nS)
Typical
4.0
3.0
2.5
20.
Maximum
5.0
4.0
3.5
3.0
Period Jitter RMS Values
àcontact factory
Typical
à
à
à
Maximum
à
à
à
àà
Recommended Test Circuit with TTL Load
Waveform
*CL (Capacitive Load): Includes the input capacitance of oscilloscope.
Thru-Hole Package Outlines (NOT TO SCALE):
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INCHES (MILLIMETERS)
SMD Outline
PIN CONNECTIONS
PIN CONNECTION
1 NO CONNECTION
4 GROUND
5 OUTPUT
8 Vcc
Recommended Land Pattern
0.136 (3.45)
8
0.035 (0.89)
5
0.200 (5.08)
0.300
(7.62)
0.354 (8.99)
1
4
October 2000
Pletronics Inc., 19013 36th Ave. W., Suite H, Lynnwood, WA 98036-5761 USA







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