ICS9248-73 Datasheet, PDF (7/15 Pages) Integrated Circuit Systems – Frequency Timing Generator for Pentium II Systems

ICS9248 - 73
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)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP
Output High Voltage V_OH2B I_OH = -12.0 mA
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
Rise Time
t_r2B1
V_OL = 0.4 V, V_OH = 2.0 V
Fall Time
t_f2B1
V_OH = 2.0 V, V_OL = 0.4 V
Duty Cycle
d
1
t2B
V_T = 1.25 V; Freq>= 140MHz
V_T = 1.25 V; Freq< 140MHz
Skew
t_sk2B1 V_T = 1.25 V
Jitter, Cycle-to-cycle
t_jcy
1
c-cyc2B
V_T = 1.25 V; CPU @ 66.8 MHz
V_T = 1.25 V; CPU @ 100.23 MHz
1_{Guaranteed by design, not 100% tested in production.}
2 2.36
0.33
-34
19
25
0.4 1.5
0.4 1.4
40 48
43 48
50
500
130
MAX UNITS
V
0.4 V
-19 mA
mA
2
ns
1.8 ns
50 %
53 %
175 ps
250 ps
Electrical Characteristics - 3V66
T_A = 0 - 70º C; V_DD = 3.3 V +/-5%, V_DDL = 2.5 V +/-5%; C_L =30 pF
PARAMETER
SYMBOL
CONDITIONS
Output High Voltage
VOH1 IOH = -11 mA
Output Low Voltage
VOL1 IOL = 9.4 mA
Output High Current
IOH1
VOH = 2.0 V
Output Low Current
IOL1
VOL = 0.8 V
Rise Time¹
tr1
VOL = 0.4 V, VOH = 2.4 V
Fall Time¹
tf1
VOH = 2.4 V, VOL = 0.4 V
Duty Cycle¹
dt1
VT = 1.5 V
Skew¹
tsk1
VT = 1.5 V
Jitter, Cycle-to-cycle¹
Jitter, Cycle-to-cycle¹
t_jcyc-cyc1
t_jcyc-cyc1
V_T = 1.5 V; 3V66 Freq > 75MHz
V_T = 1.5 V; 3V66 Freq < 75MHz
1_{Guaranteed by design, not 100% tested in production.}
MIN TYP MAX UNITS
2.4 3.1
V
0.18 0.4 V
-55 -22 mA
25
43
mA
0.5 1.55 2
ns
0.5 1.4
2
ns
45
48
55
%
50 175 ps
100 500 ps
350 500 ps
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