ICS9248-61 Datasheet, PDF (7/9 Pages) Integrated Circuit Systems – Frequency Timing Generator for Pentium II Systems

ICS9248-61
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)
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_t2
1
B
V_T = 1.25 V
Skew
t_sk2B1 V_T = 1.25 V
Jitter, Cycle-to-cycle
t_jcy
1
c-cyc2B
V_T = 1.25 V
Jitter, One Sigma
Jitter, Absolute
t_j1s2B1
t_jab
s
1
2B
V_T = 1.25 V
V_T = 1.25 V
1_{Guaranteed by design, not 100% tested in production.}
2
2.3
0.2
-41
19 37
1.25
1
45 48
30
150
40
-250 140
MAX UNITS
V
0.4 V
-19 mA
mA
1.6 ns
1.6 ns
55 %
175 ps
250 ps
150 ps
+250 ps
Electrical Characteristics - PCICLK
TA = 0 - 70C; VDD = VDDL = 3.3 V +/-5%; CL = 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
Rise Time¹
Fall Time¹
Duty Cycle¹
Skew¹
IOL1
VOL = 0.8 V
tr1
VOL = 0.4 V, VOH = 2.4 V
tf1
VOH = 2.4 V, VOL = 0.4 V
dt1
VT = 1.5 V
tsk1
VT = 1.5 V
Jitter, Cycle-to-cycle
Jitter, One Sigma¹
Jitter, Absolute¹
t_jcyc-cyc1
tj1s1
tjabs1
V_T = 1.25 V
VT = 1.5 V
VT = 1.5 V
1_{Guaranteed by design, not 100% tested in production.}
MIN TYP MAX UNITS
2.4 3.1
V
0.1 0.4 V
-62 -22 mA
16
57
mA
1.5
2
ns
1.1
2
ns
45
50
55
%
140 500 ps
250 500 ps
17 150 ps
-250 70 250 ps
7