ICS557-01 Datasheet, PDF (7/10 Pages) Integrated Circuit Systems – PCI-EXPRESS CLOCK SOURCE

ICS557-01
PCI-EXPRESS CLOCK SOURCE
AC Electrical Characteristics - CLK/CLK
Unless stated otherwise, VDD=3.3 V ±5%, Ambient Temperature -40 to +85°C
Parameter
Symbol
Conditions
Min. Typ. Max. Units
Input Frequency
Output Frequency
Output High Voltage^1,2
Output Low Voltage^1,2
Crossing Point
Voltage^1,2
V_OH
V_OL
Absolute
25
100
660
700
-150
0
250
350
MHz
MHz
850
mV
mV
550
mV
Crossing Point
Voltage^1,2,4
Jitter, Cycle-to-Cycle^1,3
Rise Time^1,2
Fall Time^1,2
Rise/Fall Time
Variation^1,2
Duty Cycle^1,3
Output Enable Time⁵
Output Disable Time⁵
Variation over all edges
t_OR from 0.175 V to 0.525 V
t_OF from 0.525 V to 0.175 V
All outputs
All outputs
140
mV
100
ps
175
332
700
ps
175
344
700
ps
125
ps
45
55
%
30
µs
30
µs
Stabilization Time
t_STABLE From power-up VDD=3.3 V
3.0
ms
Spread Change Time t_SPREAD Settling period after spread change
3.0
ms
1 _{Test setup is RL=50 ohms with 2 pF, RR = 475Ω (1%).}
2 _{Measurement taken from a single-ended waveform.}
3 _{Measurement taken from a differential waveform.}
4 _{Measured at the crossing point where instantaneous voltages of both CLKOUT and CLKOUT are equal.}
5 _{CLKOUT pins are tri-stated when OE is low asserted. CLKOUT is driven differential when OE is high.}
Thermal Characteristics (8-pin SOIC)
Parameter
Symbol Conditions
Thermal Resistance Junction to
Ambient
θ_JA Still air
θ_JA 1 m/s air flow
θ_JA 3 m/s air flow
Thermal Resistance Junction to Case θ_JC
Min.
Typ.
150
140
120
40
Max.
Units
°C/W
°C/W
°C/W
°C/W
MDS 557-01 F
7
Revision 011606
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