ics557-03 Integrated Device Technology, ics557-03 Datasheet - Page 7

• Manufacturer Part Number: ics557-03
• Description: Pci-express Clock Source
• Manufacturer: Integrated Device Technology

AC Electrical Characteristics - CLK0/CLK1, CLK0/CLK1
Unless stated otherwise, VDD=3.3 V ±10%, Ambient Temperature -40 to +85° C
IDT™ / ICS™ PCI-EXPRESS CLOCK SOURCE
Input Frequency
Output Frequency
Output High Voltage
Output Low Voltage
Crossing Point Voltage
Crossing Point Voltage
Jitter, Cycle-to-Cycle
Frequency Synthesis Error
Modulation Frequency
Rise Time
Fall Time
Rise/Fall Time Variation
Output to Output Skew
Duty Cycle
Output Enable Time
Output Disable Time
Stabilization Time
Spread Spectrum Transition
Time
ICS557-03
PCI-EXPRESS CLOCK SOURCE
Note 1: Test setup is R
Note 2: Measurement taken from a single-ended waveform.
Note 3: Measurement taken from a differential waveform.
Note 4: Measured at the crossing point where instantaneous voltages of both CLK and CLK are equal.
Note 5: CLK pins are tri-stated when OE is low asserted. CLK is driven differential when OE is high.
Parameter
1,2
1,2
1,3
1,2
1,2
5
5
1,3
1,2
1,2,4
1,2
L
Symbol
=50 ohms with 2 pF, Rr = 475Ω (1%).
t
t
SPREAD
STABLE
V
V
t
t
OR
OF
OH
OL
HCSL termination
LVDS termination
HCSL
HCSL
Absolute
Variation over all edges
All outputs
Spread spectrum
From 0.175 V to 0.525 V
From 0.525 V to 0.175 V
All outputs
All outputs
From power-up VDD=3.3 V
Stabilization time after spread
spectrum changes
Conditions
7
Min.
-150
660
250
175
175
25
25
45
30
Typ.
31.5
700
350
332
344
3.0
3.0
25
80
10
10
0
0
ICS557-03
Max.
200
100
850
550
140
700
700
125
3.5
3.5
27
33
50
55
12
12
PCIE SSCG
REV L 022608
Units
MHz
MHz
MHz
ppm
kHz
mV
mV
mV
mV
ms
ms
ps
ps
ps
ps
ps
µs
µs
%