ICS950223 Datasheet, PDF (19/24 Pages) Integrated Circuit Systems – Programmable Timing Control Hub for P4

Integrated
Circuit
Systems, Inc.
ICS950223
Electrical Characteristics - CPUCLKT/C
T_A = 0 - 70°C; VDD=3.3V +/-5%; C_L = 10-20 pF (unless otherwise specified)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP
Current Source Output
Impedance
Zo¹
V_O = V_x
3000
Voltage High
VHigh
Statistical
660 718
Voltage Low
VLow measurement on single -150
17
Max Voltage
Vovs Measurement on single
730
Min Voltage
Crossing Voltage
(abs)
Vuds
Vcross(abs)
ended signal using
-450
-7
250 340
Crossing Voltage (var) d-Vcross
Variation of crossing
over all edges
15
Rise Time
t_r
V_OL = 0.175V, V_OH =
175
324
0.525V
Fall Time
t_f
V_OH = 0.525V V_OL =
175
453
0.175V
Duty Cycle
d_t3
Measurement from
differential wavefrom
45
50.3
Skew
t_sk3
V_T = 50%
58
Jitter, Cycle to cycle
t_jcyc-cyc1
V_T = 50%
56
1_{Guaranteed by design, not 100% tested in production.}
MAX
850
150
1150
550
140
700
700
55
100
150
UNITS
Ω
mV
mV
mV
mV
ps
ps
%
ps
ps
Electrical Characteristics - PCICLK
T_A = 0 - 70°C; V_DD = 3.3 V,+/-5%; C_L = 30 pF
PARAMETER
SYMBOL
CONDITIONS
Output Frequency
F_O1
Output High Voltage
V_OH1
I_OH = -18mA
Output Low Voltage
V_OL1
I_OL = 9.4mA
Output High Current
I_OH1
V _OH = 2.0 V
Output Low Current
I_OL1
V_OL = 0.8 V
Rise Time
t_r11
V_OL = 0.4 V, V_OH = 2.4 V
Fall Time
t_f11
V_OH = 2.4 V, V_OL = 0.4 V
Duty Cycle
d_t11
V_T = 1.5 V
Skew
t_sk11
V_T = 1.5 V
Jitter,cycle to cyc
t _{jc y c}
-c
1
yc
V_T = 1.5 V
1_{Guaranteed by design, not 100% tested in production.}
MIN TYP MAX UNITS
33.33
MHz
2.1
V
0.4
V
-22 mA
16
57 mA
1.7
2
ns
1.6
2
ns
45 51.5 55
%
61 500 ps
114 500 ps
0496C—05/06/05
19