
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
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)
5.0, 3.3, and 2.5 volts available, .01 F bypass cap recommended, consult factory for 1.8 volts
Symmetry (Duty Cycle)
40/60 to 60/40% is standard, but 45/55% at 50% of Vcc is also available (see Waveform 1)
Output Load
Standard load is 15 pF (typ. 1 ASIC) maximum, see Test Circuit 2 (consult factory for heavier loads)
Enable/Disable Option (E/D)
Max. Supply Current
Icc (mA) w/ 15pF load
Max. Rise and Fall Time
Tr & Tf (nS) w/ 15pF load
Frequency Range
(MHz)
2.5V, 3.3V
5.0V
2.5V
3.3V, 5.0V
70.000 – 79.999
30
45
3.5
3.0
80.000 – 110.000
40
80
2.5
1.5
110.001 – 119.999
50
90
2.5
1.0
120.000 – 170.000
60
95
1.5
1.0
Part Numbering Guide
Model
Frequency Stability
45 = ± 50 PPM
44 = ± 25 PPM
Frequency in MHz
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)
SM76 45 D Y - 70.0M - 30 - XXX (Internal Code or blank)
Consult factory for available frequencies and specs. Not all options available for all frequencies. A special part number may be assigned.
Mechanical:
not to scale
inches (mm)
°
Mar 2004
Solder Pads
Consult factory for higher frequencies
(425) 776 -1880, Fax: (425) 776-2760, ple-sales@pletronics.com, www.pletronics.com
TBD
Pl tronics, Inc.
Packaging
Tray or
24mm tape
16mm pitch
Frequency Stability is inclusive of frequency shifts due to calibration, temperature, supply voltage, shock, vibration and load
Output enabled when Pin #1 is open or at Logic “1”; Output disabled when Pin #1 is at Logic “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.
Non-Std Output Load
Blank = 15 pF max, 30 = 30 pF max
1 pS RMS maximum, from 12 kHz to 20 MHz from carrier
Jitter
Logic Levels
Logic “1” 90% of Vcc MIN; Logic “0” 10% of Vcc MAX
20 = ± 20 PPM
Pl tronics, Inc.
19013 36th Ave. W, Suite H Lynnwood, WA 98036 USA
Manufacturer of High Quality Frequency Control Products
.
CMOS
70
-
170
MHz,
3rd
OT
Page
8
-
11
Portions of the part number that appear after the frequency may not be marked on part (C of C provided)
0.055
(1.4)
0.200 (5.08)
1
2
3
4
7XYWKZ
FREQ M
PLE SPEC
0.228
(5.8)
0.118
(3.0)
0.040 (1.02)
0.238
(6.05)
0.105 (2.66)
MAX
0.200 (5.08)
0.040 (1.02)
1
2
1
3
4
3
4
0.356
(9.04)
TOP VIEW
0.324 (8.23)
0.059
(1.50)
0 .145
(3.68)
1
E/D
2
GND
3
OUT
4
Vcc
PIN
SIGNAL