Model 635
Low Jitter
LVPECL or LVDS Clock Oscillator
FEATURES
• Standard 7.0mm x 5.0mm, 6-Pad Surface Mount Package
• Low Phase Jitter, 0.7ps RMS Maximum
• LVPECL or LVDS Output
• Fundamental and 3rd Overtone Crystal Designs
• Frequency Range 10 – 320 MHz
• Frequency Stability ±50 ppm Standard
• Operating Voltages +2.5Vdc or +3.3Vdc
• Operating Temperature to -40°C to +85°C
• Output Enable Standard
• Tape & Reel Packaging Standard, EIA-418
• RoHS/Green Compliant [6/6]
APPLICATIONS
Model 635 is ideal for applications such as broadband access, SerDes, Ethernet/Gigabit Ethernet, SONET/SDH
and optical networking.
ORDERING INFORMATION
635
M
OUTPUT TYPE
FREQUENCY IN MHz
P = LVPECL - Pin 1 Enable [std]
L = LVDS - Pin 1 Enable [std]
E = LVPECL - Pin 2 Enable [opt]
V = LVDS - Pin 2 Enable [opt]
2
M - indicates MHz and decimal point.
SUPPLY VOLTAGE
2 = 2.5 Vdc
FREQUENCY STABILITY
3 = 3.3 Vdc
6 = ± 20 ppm 1
5 = ± 25 ppm
3 = ± 50 ppm
2 = ± 100 ppm
OPERATING TEMPERATURE RANGE
A = -10°C to +60°C
C = -20°C to +70°C
2
I = -40°C to +85°C
1] Consult factory for availability of 6I Stability/Temperature combination.
2] Frequency is recorded with 3 significant digits before the ‘M’ and 4 significant digits after the ‘M’ (including zeros).
See Table I for part number frequency codes that exceed 4 significant digits.
[Ex. XXXMXXXX (008M0000), XXXMXXXX (049M1520), XXXMXXXX (122M8800)]
Not all performance combinations and frequencies may be available.
Contact your local CTS Representative or CTS Customer Service for availability.
PACKAGING INFORMATION [reference]
Device quantity is 1k pcs. maximum per 180mm reel.
Table I
NOMINAL FREQUENCY
[MHz]
CTS PART NUMBER
FREQUENCY CODE
025M0006
025.000625
101.575694
125.009375
148.351648
153.600770
156.253906
178.018970
101M5756
125M0093
148M351A
153M6007
156M2539
178M0189
Document No. 008-0284-0
Page 1- 3
Rev. E
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