ICS950104 Datasheet, PDF (12/19 Pages) Integrated Circuit Systems – Programmable System Clock Chip for PIII Processor

ICS950104
Advance Information
Electrical Characteristics - CPUCLKT/C
T_A = 0 - 70º C; V_DD = 3.3 V +/-5%; (unles s otherwis e s tated)
P AR AME TER
SYMBOL
C ON D ITION S
Current Source
Output Im pedance
Z_O
V_O = V_X
Output High Voltage
Output High Current
Ris e Tim e¹
Differential Cros s over
Vo l ta g e ¹
Duty Cycle¹
Skew¹, CPU to CPU
Jitter, Cycle-to-cycle¹
V_OH
I_OH
t_r
V_X
d_t
t_sk
t_{j cyc- cyc}
V_R = 475W +1% ; IREF = 2.32m A; I_OH = 6*IREF
V_OL = 20% , V_OH = 80%
Note 3
V_T = 50%
V_T = 50%
V_T = V_X
Notes :
1 - Guaranteed by des ign, not 100% tes ted in production.
MIN TYP
3000
0.71
-1 3 .9 2
175
45
50
45
51
MAX UNITS
Ω
1.2
V
mA
700 ps
55
%
55
%
100 ps
150 ps
Electrical Characteristics - CPUCLK
T_A = 0 - 70º C; V_DD = 3.3 V +/-5%, V_DDL = 2.5 V +/-5%; C_L = 20 pF (unless otherwise stated)
PAR AM ETER
SYM B OL
C ONDIT IONS
M IN
Output High Voltage V_OH2B I_OH = -12.0 mA
2
Output Low Voltage
V_OL2B I_OL = 12 mA
Output High Current
I_{OH2 B}
V_OH = 1.7 V
Output Low Current
I_{OL2 B}
V_OL = 0.7 V
19
Rise Time
t
r2
1
B
V_OL = 0.4 V, V_OH = 2.0 V
Fall Time
t
f2
1
B
V_OH = 2.0 V, V_OL = 0.4 V
Duty Cycle
d
t
2
1
B
V_T = 1.25 V
45
Skew
t
sk
2
1
B
V_T = 1.25 V
Jitter, Cycle-to-cycle
Jitter, One Sigma
t _{j cy c-cy c2 B1}
t_j1s2B1
V_T = 1.25 V
V_T = 1.25 V
1_{Guaranteed by design, not 100% tested in production.}
TYP
M AX
0 .4
-1 9
1 .6
1 .6
55
250
250
150
UNITS
V
V
mA
mA
ns
ns
%
ps
ps
ps
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