2.5V/3.3V HCSL XO
NX254
Ultra Low Jitter PLL Crystal Oscillator 2.5 x 2.0mm
Electrical Performance
Parameter
Min.
5
Typ.
Max.
212.5
3.465
2.625
70
Units
Notes
Output Frequency
MHz
3.135
2.375
3.3
2.5
Supply Voltage
V
See ordering options
Supply Current, Output Enabled
Supply Current, Output Disabled only
Frequency Stability
mA
mA
ppm
40
±50
See ordering options
See ordering options
Operating Temperature Range
-40
+85
0.9
°C
Output Logic 0, VOL
Output Logic 1, VOH
Output Load
-0.15
0.66
0
V
V
0.7
RS = 33Ω, RP = 50Ω, CL = 2pF
Output requires termination
Measured 50% VCC
Duty Cycle
45
55
%
ps
Measured from VOL = 0.175V to VOH
= 0.5252V
Rise and Fall Time
700
Jitter, RMS
Jitter, RMS
PCIe Gen2, 100 MHz
PCIe Gen3, 100 MHz
2.0
3.0
1.0
6
ps
ps
ps
ps
ps
ps
ps
As defined by PCI-SIG for PCIe Gen2
As defined by PCI-SIG for PCIe Gen3
20.000 adjacent periods
0.43
Jitter, Accumulated , RMS (1-σ)
< 40MHz
0.4
0.4
0.4
1
12kHz to 5 MHz frequency band
12kHz to 20 MHz frequency band
12kHz to 20 MHz frequency band
100,000 random periods
Jitter, Phase, RMS 40 to 212.5MHz
100MHz, 125MHz
1
0.6
40
Jitter, pk-pk
Notes:
1. Stability includes all combinations of operating temperature, load changes, rated input (supply) voltage changes, initial calibration tolerance (25°C),
aging (1 year at 25°C average effective ambient temperature), shock and vibration.
2. Phase jitter typical value is depending on output frequencies.
3. For specifications other than those listed, please contact sales.
Output Enable / Disable Function
Parameter
Input Voltage (pin 1), Output Enable
Input Voltage (pin 1), Output Disable (low power standby)
Output Disable Delay
Min.
Typ.
Max.
Units
V
Notes
0.7 VCC
or open
Output is Hi-Z
0.3 VCC
100
V
ns
Output Enable Delay
100
ns
Start up Time
10
ms
Absolute Maximum Ratings
Parameter
Min.
Typ.
Max.
Units
Notes
Storage Temperature
-55
+125
°C
For the latest product information visit: http://www.pericom.com/products/crystals-and-crystal-oscillators/hiflex-xo/?part=NX254
For test circuit go to: http://www.pericom.com/pdf/sre/tc-hcsl.pdf
For soldering reflow profile and reliability test ratings go to: http://www.pericom.com/pdf/sre/reflow.pdf
For tape and reel information go to: http://www.pericom.com/pdf/sre/tr_2520_xo.pdf
SaRonix-eCera™ is a Pericom® Semiconductor company
•
US: +1-408-232-9100 TW: +886-3-4518888
NX254
•
www.pericom.com
Rev A 02/05/15
All specifications are subject to change without notice.
2
15-0037
