ICS932S825 Datasheet, PDF (10/20 Pages) Integrated Circuit Systems – Low Power Clock Chip for Serverworks HT2400 Servers

ICS932S825
Electrical Characteristics - 33 MHz PCICLK, 25MHz Outputs
T_A = 0 - 70°C; VDD=3.3V +/-5%; C_L = 5 pF (unless otherwise specified)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX UNITS
PCI Long Accuracy
ppm
see Tperiod min-max values
-300
300 ppm
PCI Clock period
T_period
33.33MHz output nominal
33.33MHz output spread
29.9910
29.9910
30.0090 ns
30.1598 ns
25MHz Long Accuracy
ppm
see Tperiod min-max values
-50
50
ns
25MHz Clock period
Output High Voltage
Output Low Voltage
Output High Current
Output Low Current
Edge Rate
T_period
V_OH
V_OL
I_OH
I_OL
δV/δt
25MHz output nominal
I_OH = -1 mA
I_OL = 1 mA
V _OH @MIN = 1.0 V
V_OH@ MAX = 3.135 V
V_OL @ MIN = 1.95 V
V_OL @ MAX = 0.4 V
Rising edge rate
40
ns
2.4
V
0.55
V
-33
mA
-33
mA
30
mA
38
mA
1
4
V/ns
Edge Rate
δV/δt
Falling edge rate
1
4
V/ns
Duty Cycle
d_t1
PCI Skew
t_sk1
25MHz Skew
t_sk1
V_T = 1.5 V
V_T = 1.5 V
V_T = 1.5 V
45
55
%
250
ps
250
ps
Jitter, Cycle to cycle
t_jcyc-cyc
V_T = 1.5 V
250
ps
1_{Guaranteed by design and characterization, not 100% tested in production.}
2 _{All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REF is at 14.31818MHz}
Notes
1,2
2
2
2
2
1
1
1
1
1
1
1
1
1
1
1
1
Electrical Characteristics - 48MHz
T_A = 0 - 70°C; V_DD = 3.3 V +/-5%; C_L = 5 pF (unless otherwise specified)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX UNITS
Long Accuracy
ppm
see Tperiod min-max values
-100
100 ppm
Clock period
T_period
48.00MHz output nominal
20.8257
20.8340 ns
Output High Voltage
V_OH
I_OH = -1 mA
2.4
V
Output Low Voltage
V_OL
I_OL = 1 mA
0.55
V
Output High Current
I_OH
V _OH @ MIN = 1.0 V
-33
V_OH@ MAX = 3.135 V
mA
-33
mA
Output Low Current
I_OL
V_OL @MIN = 1.95 V
30
V_OL @ MAX = 0.4 V
mA
38
mA
Edge Rate
δV/δt
Rising edge rate
1
2
V/ns
Edge Rate
δV/δt
Falling edge rate
1
2
V/ns
Duty Cycle
d_t1
V_T = 1.5 V
45
55
%
Group Skew
t_sk1
V_T = 1.5 V
250
ps
Jitter, Cycle to cycle
t_jcyc-cyc
V_T = 1.5 V
1_{Guaranteed by design and characterization, not 100% tested in production.}
250
ps
2 _{All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REF is at 14.31818MHz}
Notes
1,2
2
1
1
1
1
1
1
1
1
1
1
1
1276D—10/25/07
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