Pl tronics, Inc.
.
19013 36th Ave. W, Suite H Lynnwood, WA 98036 USA
Manufacturer of High Quality Frequency Control Products
SM7645D Series
4 Pad Leadless Surface Mount Clock Oscillator
CMOS with Enable/ Disable, 3rd Overtone Crystal Used
Low Jitter
–
70.00 MHz 170.00 MHz
Consult factory for higher frequencies
Standard Specifications
Overall Frequency Stability
SM7645D: ± 50 PPM, SM7644D: ± 25 PPM, SM7620D: ± 20 PPM over Operating Temp. 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)
Symmetry (Duty Cycle)
5.0, 3.3, and 2.5 volts available, .01 µF bypass cap recommended, consult factory for 1.8 volts
40/60 to 60/40% is standard, but 45/55% at 50% of Vcc is also available (see Waveform 1)
Logic Levels
Jitter
Logic “1” 90% of Vcc MIN; Logic “0” 10% of Vcc MAX
1 pS RMS maximum, from 12 kHz to 20 MHz from carrier
Output Load
Enable/Disable Option (E/D)
Standard load is 15 pF (typ. 1 ASIC) maximum, see Test Circuit 2 (consult factory for heavier loads)
Output enabled when Pin #1 is open or at Logic “1”; Output disabled when Pin #1 is at Logic “0”.
Max. Rise and Fall Time
Tr & Tf (nS) w/ 15pF load
Max. Supply Current
Icc (mA) w/ 15pF load
Frequency Range
(MHz)
2.5V, 3.3V
5.0V
45
80
90
95
2.5V
3.5
2.5
2.5
1.5
3.3V, 5.0V
–
70.000 79.999
30
40
50
60
3.0
1.5
1.0
1.0
–
80.000 110.000
–
110.001 119.999
–
120.000 170.000
Part Numbering Guide
Portions of the part number that appear after the frequency may not be marked on part (C of C provided)
SM76 45 D Y - 70.0M - 30 - XXX (Internal Code or blank)
Packaging
Tray or
24mm tape
16mm pitch
Non-Std Output Load
Blank = 15 pF max, 30 = 30 pF max
Model
Frequency in MHz
Frequency Stability
45 = ± 50 PPM
44 = ± 25 PPM
20 = ± 20 PPM
Special Specifications (choose all that apply)
°
Y: Std Specs (5.0V ± 10%, 0 to +70 C, 40/60% Symmetry)
°
E: Extended Operating Temperature Range (- 40 to +85 C)
S: 45/55% Symmetry at 50% of Vcc
V: Supply Voltage of 3.3 volts ± 10%
W: Supply Voltage of 2.5 volts ± 5%
X: Supply Voltage of 1.8 volts ± 5% (Consult factory)
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:
not to scale
inches (mm)
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.
0.200 (5.08)
TOP VIEW
4
0.040 (1.02) 0.040 (1.02)
3
3
4
PIN SIGNAL
1
2
3
4
E/D
3
2
4
GND
OUT
Vcc
7XYWKZ
FREQ M
PLE SPEC
0.055 0 .145
(1.4) (3.68)
0
0.059
(1.50)
1
1
0.324 (8.23)
2
2
1
0.105 (2.66)
MAX
Mar 2004
0.200 (5.08)
(425) 776 -1880, Fax: (425) 776-2760, ple-sales@pletronics.com, www.pletronics.com
TBD
Pl tronics, Inc.