ICS9248-50 Datasheet, PDF (7/11 Pages) Integrated Circuit Systems – Frequency Timing Generator for Pentium II Systems

ICS9248-50
Electrical Characteristics - CPUCLK
T_A = 0 - 70C; V_DD = 3.3 V +/-5%, V_DDL = 2.5 V +/-5%; C_L = 10 - 20 pF (unless otherwise stated)
PAR AM ETER
SYM B OL
C ONDIT IONS
M IN TYP
Output High Voltage V_OH2B I_OH = -12.0 mA
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
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
Skew
t
s
k
2
1
B
V_T = 1.25 V
Jitter
period(norm) V_T = 1.25 V; 100M Hz
Jitter
Jitter, Absolute
t_j
cy
c-cy
c2
1
B
t_j
ab
s
2
1
B
V_T = 1.25 V
V_T = 1.25 V
1_{Guaranteed by design, not 100% tested in production.}
1.8 2.3
0 .3 1
27
0.4 1.15
0 .4
1 .4
44
48
134
10
10
186
-250 150
M AX
0 .4
-2 7
1 .6
1 .6
55
175
1 0 .5
200
+250
UNITS
V
V
mA
mA
ns
ns
%
ps
ns
ps
ps
Electrical Characteristics - REF/48M Hz/24M Hz
T_A = 0 - 70C; V_DD = 3.3 V +/-5%, V_DDL = 2.5 V +/-5%; C_L = 10 - 20 pF (unless otherwise stated)
PA RA M ETER
SYM BOL
CONDITIONS
M IN TYP
Output High Voltage
VO H 5
IOH = -12 mA
2.6
3.1
Output Low Voltage
VO L5
IOL = 9 mA
0.17
Output High Current
IO H 5
VOH = 2.0 V
-44
Output Low Current
Ris e Time¹
Fall Time¹
Duty Cycle¹
IO L5
VOL = 0.8 V
tr5
VOL = 0.4 V, VOH = 2.4 V
tf5
VOH = 2.4 V, VOL = 0.4 V
dt5
VT = 1.5 V
16
42
1.4
1.1
45
53
Jitter¹
t j 1 _σ5
tjabs5
VT = 1.5 V, REF
VT = 1.5 V, REF
185
385
Jitter¹
t j 1 _σ5
tjabs5
VT = 1.5 V, 48 M Hz
VT = 1.5 V, 48 M Hz
169
469
MAX
0.4
-22
UNITS
V
V
mA
mA
4
ns
4
ns
55
%
250 ps
800 ps
250 ps
800 ps
7