SaRonix
Crystal Clock Oscillator
Technical Data
Frequency Range:
Frequency Stability:
25 MHz to 670 MHz
±20, ±25, ±32, ±50 or ±100 ppm over all conditions: operating
temperature, rated input (supply) voltage changes, load changes,
calibration tolerance, *aging, shock and vibration
5 years @ average effective ambient temperature of 40°C
0 to +70°C or -40 to +85°C
-55 to +125°C
+3.3V PECL ±10%
85mA typ, 110mA max
3.3V PECL, High Frequency
SEL381xx Series
*Aging:
Temperature Range:
Operating:
Storage:
Supply Voltage (V
CC
):
Supply Current:
Output Drive:
ACTUAL SIZE
Description
A crystal controlled, high frequency,
highly stable oscillator, compatible with
LVPECL Logic. The output can be dis-
abled to facilitate testing or combining
multiple clocks. Complementary out-
puts are standard. The device is con-
tained in a sub-miniature, very low pro-
file, leadless ceramic SMD package
with 6 gold-plated contact pads. This
miniature oscillator is ideal for today's
automated assembly environments.
Applications & Features
•
•
•
•
•
•
•
•
•
•
•
SONET/SDH/DWDM linecards
XGigE NICs
3.3V PECL (LVPECL) capability
Frequencies from 25 to 670 MHz
Disable output feature available
Miniature Ceramic SMD package
Available on tape & reel; 16mm tape,
500pcs per reel
Optical SOHO & FTTH/FTTU OC-3
first/last mile networking
Forward Error Correction frequencies
SONET minimum clock stability com-
pliant
Designed for standard reflow and wash-
ing techniques
Symmetry:
Rise & Fall Times:
Logic 0:
Logic 1:
Load:
Period Jitter:
Phase Jitter:
Total Jitter:
Output Enable Characteristics:
(SEL3811 and SEL3812)
Output Enable Voltage:
Disable Voltage:
(SEL3813 and SEL3814)
Output Enable Voltage:
Disable Voltage:
Mechanical:
Shock:
Solderability:
Terminal Strength:
Vibration:
Solvent Resistance:
Resistance to Soldering Heat:
Environmental:
Thermal Shock:
Moisture Resistance:
Part Numbering Guide
45/55% max @ 50% waveform
850ps max, 20% to 80% of the waveform
≤
V
CC
-1.620V (0 to +85°C);
≤
V
CC
-1.555V (-40 to 0°C)
≥
V
CC
-1.025V (0 to +85°C);
≥
V
CC
-1.085V (-40 to 0°C)
50Ω to V
CC
-2V (all outputs require termination)
10ps RMS (1-sigma) max, accumulated in 20,000 adjacent periods
3ps RMS (1-sigma) max, in 12 kHz ~ 40 MHz frequency band
40ps peak-to-peak max in 100,000 periods
≤
Level 0 or open
≥
Level 1 (Q & Q outputs disabled to High Impedance)
≥
Level 1 or open
≤
Level 0 (Q & Q outputs disabled to High Impedance)
MIL-STD-883,
MIL-STD-883,
MIL-STD-883,
MIL-STD-883,
MIL-STD-202,
MIL-STD-202,
Method 2002, Condition B
Method 2003
Method 2004, Condition B2
Method 2007, Condition A
Method 215
Method 210, Condition I or J
MIL-STD-883, Method 1011, Condition A
MIL-STD-883, Method 1004
SEL381 0 B - 312.5000 (T)
Series
3.3V PECL (LVPECL), SMD
Device Type
0 = Pin 1: NC, Pin 2: NC
1 = Pin 1: Enable/Disable, Pin 2: NC
2 = Pin 1: NC, Pin 2: Enable/Disable
3 = Pin 1: Enable/Disable, Pin 2: NC
4 = Pin 1: NC, Pin 2: Enable/Disable
(T)
= Tape & Reel
full reel increments only
Blank = Bulk packaged
Frequency (MHz)
Stability
AA = ±20 ppm, 0 to +70°C
A = ±25 ppm, 0 to +70°C
B = ±50 ppm, 0 to +70°C
E = ±50 ppm, -40 to +85°C
F = ±100 ppm, -40 to +85°C
H = ±32ppm, -40 to +85°C
DS-225
REV A
SaRonix
141 Jefferson Drive • Menlo Park, CA 94025 • USA • 650-470-7700 • 800-227-8974 • Fax 650-462-9894
www.saronix.com
SaRonix
Crystal Clock Oscillator
Technical Data
Package Details
7.2
max
.284
3.3V PECL, High Frequency
SEL381xx Series
Test Circuit
POSITIVE SUPPLY (LVPECL)
5.2
max
.205
+2V
6
5
4
50Ω INTERNAL SCOPE
TERMINATION TO GND
50Ω INTERNAL SCOPE
TERMINATION TO GND
3
-1.3V
2.0
max
.079
Pin 1
1.6
.063
Pin 2
Pin 5
1.2
.047
Pin 6
2.54
.100
5.08
.200
Pin 4
2.8
.110
1.4
.055
Pin 3
OSCILLATOR
ENABLE/DISABLE
(SEL3811/3813) or
N/C (SEL3810/3812/3814)*
1
2
ENABLE/DISABLE
(SEL3812/3814) or
N/C (SEL3810/3811/3813)*
*
"ECL Compatible Input"
Output Waveform
Complementary
Logic 1
80%
V
OH
Min
Outputs
Crossing
20%
Logic 0
Frequency
Country of Origin
Week of Mfg.
Year of Mfg.
Pin Functions:
Pin 1: EN, EN or N/C
Pin 2: EN, EN or N/C
Pin 3: V
EE
Pin 4: Q Output
Pin 5: Q Output
Pin 6: V
CC
Marking Format*
SaRonix
Part Number
SEL381xx
YYWWX
V
OL
Max
SYMMETRY
45% Min, 55% Max
Denotes Pin 1
*
Exact location of items may vary
Recommended Land Pattern
2.54
.100
Solder Reflow Guide
250
200
150
Reflow 235 ±5°C
4°C/sec max
Preheat 183 ±10°C
Cooling
**
2.0
.079
6
1.8
.071
4
4.2
.165
4°C/sec max
2.4
.094
3
1
5.08
.200
Time
1 – 2 minutes
5 sec min
10 sec max
**
External high frequency power supply decoupling required.
Scale: None (Dimensions in
mm
)
inches
Temperature – °C
All specifications are subject to change without notice.
DS-225
REV A
SaRonix
141 Jefferson Drive • Menlo Park, CA 94025 • USA • 650-470-7700 • 800-227-8974 • Fax 650-462-9894
www.saronix.com
