ICS950901 Datasheet, PDF (12/20 Pages) Integrated Circuit Systems – Programmable Timing Control Hub for P4

Integrated
Circuit
Systems, Inc.
ICS950901
Electrical Characteristic - CPUCLKC/T
TA = 0 - 70º C; VDD = 3.3 V +/-5%; (unless otherwise stated)
PARAMETER
SYMBOL
CONDITIONS
Current Source Output
Impedance
Z_o
V_o = V_x
Output High Voltage
V_oh
V_r = 475W +1%; I_REF=2.32mA; Ioh =
6*IREF
Output High Current
I_oh
Rise Time₁
t_r
V_ol = 20%, V_oh = 80%, 0.175 - 0.525 V
Differential Crossover
V_x
Duty Cycle₁
d_t
V_t = 50%
Skew1, CPU to CPU
t_sk
V_t = 50%
Jitter, Cycle-to-cycle₁
t_jcyc-cyc
V_t = V_x
Notes:
1 ^{- Guaranteed by design, not 100% tested in production.}
MIN
3000
175
45
45
TYP
0.71
-13.92
263
50
51
55
105
MAX
1.2
700
55
55
150
200
UNITS
Ω
V
mA
ps
%
%
ps
ps
Electrical Characteristics - CPUCLKTC_CS
T_A = 0 - 70º C; V_DD = 2.5V +/-5%; C_L = 20 pF (unless otherwise stated)
PARAMETER SYMBOL
CONDITIONS
MIN
Output High Voltage V_oh2b I_oh = -12.0 mA
2
Output Low Voltage
V_ol2b I_ol = 12 mA
Output High Current
I_oh2b V_oh = 1.7 V
Output Low Current
I_ol2b V_ol = 0.7 V
19
Rise Time
t_r2B V_ol = 0.4 V, V_oh = 2.0 V
Differential Crossover V_x
45
Duty Cycle
d_t2B V_t = 1.25 V, Typ: crossing 45
Skew
t_sk2B V_t = 1.25 V
Jitter, Cycle-to-cycle t_jcyc-cyc2B V_t = 1.25 V
Jitter, One Sigma
Jitter, Absolute
t_j1s2B
t_jabs2B
V_t = 1.25 V
V_t = 1.25 V
-250
1^{Guaranteed by design, not 100% tested in production.}
TYP
0.75
50
50.9
155
MAX
0.4
-19
1.6
55
55
175
250
150
250
UNITS
V
V
mA
mA
ns
%
%
ps
ps
ps
ps
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