SM7700D SERIES
n
n
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CMOS COMPATIBLE
WITH
TRI –STATE OUTPUT
LEADLESS SURFACE MOUNT OSCILLATOR IN 7 x 5mm CERAMIC PACKAGE
3RD OVERTONE CRYSTAL USED
LOW JITTER (SEE TABLE NEXT PAGE)
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) & Jitter
Logic “1” & Logic “0” (see next page)
Output Load
Tri-state Output
Packaging (see page R1, Figure 4)
70.000 MHz – 160.000 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 for
certain frequencies.
5 Volt
±
10% is standard, but 3.3 Volt or 2.5 Volt
±
10% also available.
40/60 - 60/40% is standard, but 45/55% symmetry at 50% of Vcc is
also available.
Depends on frequency and output load. See next page.
90% of Vcc MIN.; 10% of Vcc MAX.
Can drive up to 15pF
Normal output when pin #1 is open (no connection);
Normal output when pin #1 is at logic “1”;
High-Impedance Output when pin #1 is at logic “0”.
16 mm tape, 254 mm reel: 1000 parts per reel.
For quantities <250: 100 parts per tray.
PART NUMBERING GUIDE:
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The Pletronics part number for an SM7700D series oscillator consists of the following 3 elements:
1.
Overall Frequency Stability over Operating Temperature Range:
SM7745D:
±
50 PPM;
SM7744D:
±
25 PPM
Optional Alphabet Designator for Special Requirement:
SM7745DY: standard specifications;
SM7745DE: operating temperature range of -40 to +85°C;
SM7745DS: 45/55% symmetry at 50% of Vcc;
SM7745DV: Operates at Vcc = 3.3 V;
SM7745DW: Operates at Vcc = 2.5 V
(There are other alphabet designators not listed here.)
Frequency of Operation in MHz
2.
3.
EXAMPLES: SM7745DSV-106.250 MHz; SM7745DW-125.000 MHz; SM7744DY-100.000 MHz
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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
O13A
SM7700D SERIES
Input Current (Icc), Rise and Fall time with 15pF Load & Jitter
Period Jitter RMS Values
(pS)
àcontact
factory
Typical
Maximum
à
à
2.6
2.9
à
à
1.8
1.9
Frequency Range
(MHz)
70.000 – 79.999
80.000 – 110.000
110.001 – 119.999
120.000 – 160.000
Icc (mA)
Typical
40.0
75.0
80.0
90.0
Maximum
45.0
80.0
90.0
95.0
Tr & Tf (nS)
Typical
2.0
0.5
0.5
0.5
Maximum
3.0
1.0
1.0
1.0
Recommended Test Circuit with CMOS Load
Waveform
T
R
Vcc
80% Logic 1
50% Logic 1
20% Logic 0
GND
Symmetry
T
F
Logic 1 (90% Vcc MIN)
50% Logic 0
Logic 0 (10% Vcc MAX)
*CL (Capacitive Load): Includes the input capacitance of oscilloscope.
** 0.01µF
external
by-pass filter is recommended.
Package Outline (NOT TO SCALE):
PIN CONNECTIONS
0.197
(5.0±0.2)
PIN
1
2
3
CONNECTION
ENABLE/DISABLE INPUT
GROUND
OUTPUT
Vcc
0.276 (7.0±0.2)
0.075 (1.9) MAX
4
RECOMMENDED LAND PATTERN
0.071 (1.8)
0.200 (5.08)
#1
#2
0.08 (2.0)
0.102
(2.6)
#4
#3
0.165 (4.2)
0.200 (5.08)
0.01uF
0.047 (1.2)
.055 (1.4)
INCHES (MILLIMETERS)
October 2000
O13B
Pletronics Inc., 19013 36
th
Ave. W., Suite H, Lynnwood, WA 98036-5761 USA
能源基础设施
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