cy2xp21 Cypress Semiconductor Corporation., cy2xp21 Datasheet - Page 3

• Manufacturer Part Number: cy2xp21
• Description: 125 Mhz Lvpecl Clock Generator
• Manufacturer: Cypress Semiconductor Corporation.

DC Electrical Characteristics
AC Electrical Characteristics
Recommended Crystal Specifications
Parameter Measurements
Document #: 001-52849 Rev. *B
V
C
F
T
T
T
T
Mode
F
ESR
C
Notes
Parameter
Parameter
Parameter
3. Not 100% tested, guaranteed by design and characterization.
4. Characterized using an 18 pF parallel resonant crystal.
OCM
OUT
R
Jitter(φ)
DC
LOCK
INX
0
, T
[3]
F
Output Frequency
Output Rise or Fall Time
RMS Phase Jitter (Random)
Output Duty Cycle
Startup Time
Mode of Oscillation
Frequency
Equivalent Series Resistance
Shunt Capacitance
LVPECL Output Common Mode
Voltage (V
Pin Capacitance, XIN & XOUT
Description
OH
Description
+ V
OL
)/2
-1.3V +/- 0.165V
[3]
Figure 2. 3.3V Output Load AC Test Circuit
V
V
2V
LVPECL
DD
SS
V
1.5V
Description
20% to 80% of full output swing
125 MHz, (1.875–20 MHz)
Measured at zero crossing point
Time for CLK to reach valid
frequency measured from the time
V
DD
PRELIMINARY
DD
= 2.5V, R
= V
[4]
DD
Test Conditions
(min.)
Conditions
TERM
Z = 50Ω
Z = 50Ω
= 50Ω to V
CLK
CLK#
DD
–
SCOPE
50Ω
50Ω
Min
112
Min
48
1.2
–
–
–
–
22.4
Typ
Min
4.5
Typ
0.5
0.4
–
–
–
–
–
–
Fundamental
Max
Max
Max
140
–
–
1.0
28
50
52
7
–
5
CY2XP21
Page 3 of 7
Unit
MHz
Unit
Unit
MHz
pF
pF
V
ms
ns
ps
Ω
%
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