Advance Information
SEL503 Series
3.3V PECL Low Jitter
Crystal Clock Oscillator (XO)
Actual Size = 5 x 3.2mm
Product Features
• Thicker crystal than conventional overtone for
improved reliablity
• Less than 1 ps RMS jitter with advanced non-PLL,
patented XP Technology (U.S. Patent #7002423)
• Tight stability over a broad range of operating
conditions
• 3.3V PECL (LVPECL) compatible logic levels
• Pin-compatible with standard 5 x 3.2mm packages
• Designed for standard reflow & washing techniques
• IBIS models available
• RoHS compliant **
**per #7, Annex of Directive 2002/OS/EC
Packaging Outline
Pin Functions
Pin
Function
1
2
3
4
5
3.2
.126
OE or NC
OE or NC
V
EE
Q Output
Q Output
V
CC
6
5.0
.196
Product Description
The SEL503 Series is a 3.3V crystal clock oscillator that
achieves superb jitter and stability over a broad range of
operating conditions and frequencies. The output clock
signal, generated internally with a patented oscillator
design, is compatible with LVPECL logic levels. The device,
available on tape and reel, is contained in a 5 x 3.2mm
surface-mount ceramic package.
Common Frequencies
Contact SaRonix for additional frequencies
Applications
The SEL503 Series is an ideal reference clock for high-
speed applications requiring low jitter, including:
• 1/10 Gigabit Ethernet
• 2/4/10G FibreChannel
• Serial Attached SCSI (SAS)
• Server & Storage platforms
• SONET/SDH linecards
• Passive Optical Network (PON) devices
• HD Video Systems
50.0000 MHz
62.5000 MHz
66.0000 MHz
66.6667 MHz
74.1758 MHz
75.0000 MHz
77.7600 MHz
100.0000 MHz
106.2500 MHz
125.0000 MHz
133.0000 MHz
148.3516 MHz
148.5000 MHz
150.0000 MHz
155.5200 MHz
156.2500 MHz
159.3750 MHz
160.0000 MHz
161.1328 MHz
187.5000 MHz
200.0000 MHz
212.5000 MHz
Ordering Information
SaRonix
Product Series
Output Enable/Disable Function
0 = N/C pin 1, and pin 2
3 = OE pin 1, N/C pin 2
4 = N/C pin 1, OE pin 2
S EL503 3 B - 156.2500 (T)
Packaging
(T) = Tape & Reel
full reel increments
Blank = Bulk packaged
Output Frequency
(MHz)
Frequency Stability
A = ±25 ppm (-10 to +70°C)
B = ±50 ppm (-10 to +70°C)
E = ±50 ppm (-40 to +85°C)
Note: Others available, please inquire
Pericom Semiconductor Corporation • 1-800-435-2336 • http://www.pericom.com/saronix
1
All specifications are subject to change without notice.
DS 278 Rev 01 | 06/23/06
Advance Information
SEL503 Series
3.3V PECL Low Jitter
Crystal Clock Oscillator (XO)
Electrical Performance
Parameter
Min.
Typ.
Max.
Units
Notes
Output frequency
Supply voltage
Supply current
Supply current
Supply current
Supply current
Frequency stability
Operating temperature
Output logic 0, V
OL
Output logic 0, V
OL
Output logic 1, V
OH
Output logic 1, V
OH
Output load
Duty cycle
Rise and fall time
Jitter, phase
Jitter, total
50
2.97
3.3
55
50
212.50
3.63
85
0.03
60
15
±25 to
±50
MHz
V
mA
mA
mA
mA
ppM
°C
V
V
V
V
As specified
≤ 50 MHz (enabled)
≤ 50 MHz (disabled)
> 50 MHz (enabled)
> 50 MHz (disabled)
See Note 1 below
As specified
0 to +85°C
-40 to 0°C
0 to +85°C
-40 to 0°C
output requires termination
-40
+85
V
CC
– 1.620
V
CC
– 1.555
V
CC
– 1.025
V
CC
– 1.085
50Ω to V
CC
– 2V
45
500
55
850
1
40
%
ps
ps RMS
(1-σ)
ps
pk-pk
measured 50% of waveform
measured 20/80% of waveform
12kHz to 40MHz frequency band
100,000 random periods
Notes:
1. As specified. Stability includes all combinations of operating temperature, load changes, rated input (supply) voltage changes, initial calibration
tolerance (25°C), aging (5 years at 40°C average effective ambient temperature), shock and vibration.
Output Enable / Disable Function
Parameter
Min.
Typ.
Max.
Units
Notes
Input Voltage (OE pin),
Output Enable
Input voltage (OE pin),
Output Disable
Internal Pull-up Resistance
Output disable delay
Output enable delay
2.2
0.8
50
200
10
V
V
kΩ
ns
ms
or open
Outputs disabled to Hi-Z
Pericom Semiconductor Corporation • 1-800-435-2336 • http://www.pericom.com/saronix
2
All specifications are subject to change without notice. DS 278 Rev 01 | 06/23/06
Advance Information
SEL503 Series
3.3V PECL Low Jitter
Crystal Clock Oscillator (XO)
Typical Phase Noise
½½½
½½½
½½½
½½½
½½½
½½½½
½½½½
½½½½
½½½½
½½½½
½½½½
½½½½
½½½
½½
½½½
½½½½
½½
½½½
½½½½
Typical Output Waveform
Pericom Semiconductor Corporation • 1-800-435-2336 • http://www.pericom.com/saronix
3
All specifications are subject to change without notice. DS 278 Rev 01 | 06/23/06
Advance Information
SEL503 Series
3.3V PECL Low Jitter
Crystal Clock Oscillator (XO)
Absolute Maximum Ratings
Parameter
Min.
Typ.
Max.
Units
Notes
Storage temperature
-55
+125
°C
Test Circuit
+2V
+2V
0.1µF
0.1µF
-1.3V
-1.3V
0.01µF
0.01µF
6
1
6
1
5
2
5
2
4
3
4
3
50½
50½
50½
50½
Test Point
Test Point
(Termination
(Termination
internal to scope)
internal to scope)
0.1µF
0.01µF
Output Enable/Disable
Output Enable/Disable Function
(OE
Function
function present on specified pin)
Rate Select Function
Reliability Test Ratings
This product is rated to meet the following test conditions:
Type
Parameter
Test Condition
Mechanical
Mechanical
Mechanical
Mechanical
Mechanical
Mechanical
Environmental
Environmental
Environmental
Environmental
Shock
Solderability
Terminal strength
Gross leak
Fine leak
Solvent resistance
Thermal shock
Moisture resistance
Vibration
Resistance to soldering heat
MIL-STD-883, Method 2002, Condition B
JESD22-B102-D Method 2 (Preconditioning E)
MIL-STD-883, Method 2004, Condition D
MIL-STD-883, Method 1014, Condition C
MIL-STD-883, Method 1014, Condition A2 (R
1
= 2x10
-8
atm cc/s)
MIL-STD-202, Method 215
MIL-STD-883, Method 1011, Condition A
MIL-STD-883, Method 1004
MIL-STD-883, Method 2007, Condition A
J-STD-020C Table 5-2 Pb-free devices (2 cycles max)
Pericom Semiconductor Corporation • 1-800-435-2336 • http://www.pericom.com/saronix
4
All specifications are subject to change without notice. DS 278 Rev 01 | 06/23/06
Advance Information
SEL503 Series
3.3V PECL Low Jitter
Crystal Clock Oscillator (XO)
Output Waveform
t
f
VOH
t
r
80%
50%
20%
VOL
t
A
Duty cycle = 100%
x
(t
A
)
/
(t
A
+
t
B
)
t
B
Reflow Soldering Profile
As per IPC/JEDEC J-STD-020C
1 to 3°C/sec max
Peak 260°C for 10 sec max
1 to 3°C/sec
217
Temperature – °C
260
Time
60 to 90 sec
4 to 6 minutes max
Pericom Semiconductor Corporation • 1-800-435-2336 • http://www.pericom.com/saronix
5
All specifications are subject to change without notice. DS 278 Rev 01 | 06/23/06
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