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ICS952621 数据表(PDF) 7 Page - Integrated Circuit Systems

部件名 ICS952621
功能描述  Programmable Timing Control Hub??for Next Gen P4??processor
PDF  15 Pages
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制造商  ICST [Integrated Circuit Systems]
网页  http://www.icst.com
标志 ICST - Integrated Circuit Systems

ICS952621 数据表(HTML) 7 Page - Integrated Circuit Systems

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7
Integrated
Circuit
Systems, Inc.
ICS952621
0756A—09/10/04
Electrical Characteristics - VCH, USB
TA = 0 - 70°C; VDD = 3.3V +/-5%; CL = 10-20 pF (unless otherwise specified)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS Notes
Long Accuracy
ppmsee Tperiod min-max values
-200
200
ppm1,2
Clock period
Tperiod
48.008MHz output nominal
20.8257
20.8340
ns
2
Output High Voltage
VOH
IOH = -1 mA
2.4
V
Output Low Voltage
VOL
IOL = 1 mA
0.55
V
V OH = 1.0 V
-29
mA
VOH = 3.135 V
-23
mA
VOL = 1.95 V
29
mA
VOL = 0.4 V
27
mA
Edge Rate
Rising edge rate
1
2
V/ns
1
Edge Rate
Falling edge rate
1
2
V/ns
1
Rise Time
tr1
VOL = 0.4 V, VOH = 2.4 V
11.45
2
ns
1
Fall Time
tf1
VOH = 2.4 V, VOL = 0.4 V
11.37
2
ns
1
Duty Cycle
dt1
VT = 1.5 V
45
52.5
55
%
1
Skew
tsk1
VT = 1.5 V
1ns
1
Long Term Jitter
125us period jitter
(8kHz frequency modulation
amplitude)
0.628
6
ns
1
1Guaranteed by design, not 100% tested in production.
Output Low Current
IOL
2 All Long Term Accuracy and Clock Period specifications are guaranteed with the assumption that Ref output is at
14.31818MHz
Output High Current
IOH
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Notes
Long Accuracy
ppm
see Tperiod min-max values
-200
200
ppm1,2
Clock period
Tperiod
48.008MHz output nominal
20.8257
20.8340
ns
2
Output High Voltage
VOH
IOH = -1 mA
2.4
V
Output Low Voltage
VOL
IOL = 1 mA
0.55
V
V OH = 1.0 V
-29
mA
VOH = 3.135 V
-23
mA
VOL = 1.95 V
29
mA
VOL = 0.4 V
27
mA
Edge Rate
Rising edge rate
2
4
V/ns
1
Edge Rate
Falling edge rate
2
4
V/ns
1
Rise Time
tr1
VOL = 0.4 V, VOH = 2.4 V
0.5
0.87
1
ns
1
Fall Time
tf1
VOH = 2.4 V, VOL = 0.4 V
0.5
0.89
1
ns
1
Duty Cycle
dt1
VT = 1.5 V
45
52.3
55
%
1
Skew
tsk1
VT = 1.5 V
1ns
1
Long Term Jitter
125us period jitter
(8kHz frequency modulation
amplitude)
0.636
2
ns
1
1Guaranteed by design, not 100% tested in production.
TA = 0 - 70°C; VDD = 3.3V +/-5%; CL = 5-10 pF (unless otherwise specified)
Electrical Characteristics - 48MHz DOT Clock
2 All Long Term Accuracy and Clock Period specifications are guaranteed with the assumption that Ref output is at
14.31818MHz
Output High Current
IOH
Output Low Current
IOL



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