CY2XP31_11 Datasheet, PDF (3/10 Pages) Cypress Semiconductor – 312.5 MHz LVPECL Clock Generator

CY2XP31
DC Electrical Characteristics
Parameter
Description
Test Conditions
Min
Typ
Max
Unit
I_DD
Operating Supply Current with V_DD = 3.465 V, OE = V_DD, output untermi-
–
–
125
mA
Output Unterminated
nated
V_DD = 2.625 V, OE = V_DD, output untermi-
–
nated
–
120
mA
I_DDT
Operating Supply Current with V_DD = 3.465 V, OE = V_DD, output terminated
–
Output Terminated
V_DD = 2.625 V, OE = V_DD, output terminated
–
–
150
mA
–
145
mA
V_OH
LVPECL Output High Voltage V_DD = 3.3 V or 2.5 V, R_TERM = 50Ω to V_DD – V_DD –1.15 – V_DD –0.75 V
2.0 V
V_OL
LVPECL Output Low Voltage V_DD = 3.3 V or 2.5 V, R_TERM = 50Ω to V_DD – V_DD –2.0 – V_DD –1.625 V
2.0 V
V_OD1
LVPECL Peak-to-Peak Output V_DD = 3.3 V or 2.5 V, R_TERM = 50Ω to V_DD – 600
–
1000
mV
Voltage Swing
2.0 V
V_OD2
V_OCM
I_OZ
V_IH
V_IL
I_IH
I_IL
C_IN[5]
C_INX[5]
LVPECL Output Voltage Swing V_DD = 2.5 V, R_TERM = 50Ω to V_DD – 1.5 V
500
–
1000
mV
(V_OH - V_OL)
LVPECL Output Common Mode V_DD = 2.5 V, R_TERM = 50Ω to V_DD – 1.5 V
1.2
–
–
V
Voltage (V_OH + V_OL)/2
LVPECL Output Leakage Current Output off, OE = V_SS
–35
–
35
μA
Input High Voltage, OE Pin
0.7*V_DD
–
V_DD+0.3
V
Input Low Voltage, OE Pin
–0.3
–
0.3*V_DD
V
Input High Current, OE Pin
OE = V_DD
–
–
115
µA
Input Low Current, OE Pin
OE = V_SS
–50
–
–
µA
Input Capacitance, OE Pin
–
15
–
pF
Pin Capacitance, XIN & XOUT
–
4.5
–
pF
AC Electrical Characteristics^[5]
Parameter
Description
F_OUT
T_R, T_F[3]
T_{Jitter(φ)[6]}
T_DC[7]
T_OHZ
Output Frequency
Output Rise or Fall Time
RMS Phase Jitter (Random)
Output Duty Cycle
Output Disable Time
T_OE
Output Enable Time
T_LOCK
Startup Time
Conditions
Min
–
20% to 80% of full output swing
–
312.5 MHz, (1.875 to 20 MHz)
–
Measured at zero crossing point
45
Time from falling edge on OE to stopped
–
outputs (Asynchronous)
Time from rising edge on OE to outputs at a
–
valid frequency (Asynchronous)
Time for CLK to reach valid frequency
–
measured from the time
V_DD = V_DD(min.)
Typ
312.5
0.5
0.3
–
–
–
–
Max Unit
–
MHz
1.0
ns
–
ps
55
%
100
ns
100
ns
5
ms
Recommended Crystal Specifications^[4]
Parameter
Mode
Mode of Oscillation
F
Frequency
ESR
Equivalent Series Resistance
C_S
Shunt Capacitance
Description
Min
Max
Fundamental
25
25
–
50
–
7
Unit
MHz
Ω
pF
Document #: 001-06385 Rev. *H
Page 3 of 10
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