ICS9148-20 Datasheet, PDF (8/11 Pages) Integrated Circuit Systems – Pentium/ProTM System Clock Chip

ICS9148-20
Electrical Characteristics - CPUCLK
TA = 0 - 70C; VDD = 3.3 V +/-5%, VDDL = 2.5 V +/-5%; CL = 10 - 20 pF (unless otherwise stated)
PARAMETER
Output Impedance
Output Impedance
SYMBOL
RDSP
1
2B
RDSN2B1
CONDITIONS
VO = VDD*(0.5)
VO = VDD*(0.5)
MIN TYP
13.5
13.5
Output High Voltage VOH2B IOH = -12.0 mA
2
2.3
Output Low Voltage VOL2B IOL = 12 mA
0.2
Output High Current
IOH2B VOH = 1.7 V
-41
Output Low Current
Rise Time
Fall Time
Duty Cycle
Skew
Jitter, Cycle-to-cycle
Jitter, One Sigma
Jitter, Absolute
IOL2B
tr2B1
tf2B1
dt2
1
B
tsk2B1
tjcyc-cyc2B1
tj1s2B1
tjab
s
1
2B
VOL = 0.7 V
VOL = 0.4 V, VOH = 2.0 V
VOH = 2.0 V, VOL = 0.4 V
VT = 1.25 V
VT = 1.25 V
VT = 1.25 V
VT = 1.25 V
VT = 1.25 V
19
37
1.25
1
45
48
30
150
40
-250 140
1_{Guaranteed by design, not 100% tested in production.}
MAX UNITS
45
Ω
45
Ω
V
0.4 V
-19 mA
mA
1.6 ns
1.6 ns
55 %
175 ps
200 ps
150 ps
+250 ps
Electrical Characteristics - IOAPIC
TA = 0 - 70C; VDD = 3.3 V +/-5%, VDDL = 2.5 V +/-5%; CL = 20 pF
PARAMETER
Output Impedance¹
Output Impedance¹
SYMBOL
CONDITIONS
RDSP4B VO = VDD*(0.5)
RDSN4B VO = VDD*(0.5)
Output High Voltage VOH4B IOH = -18 mA
Output Low Voltage VOL4B IOL = 18 mA
Output High Current IOH4B VOH = 1.7 V
Output Low Current
Rise Time¹
Fall Time¹
Duty Cycle¹
Skew¹
Jitter, One Sigma¹
Jitter, Absolute¹
IOL4B
Tr4B
Tf4B
Dt4B
tsk4
1
B
Tj1s4B
Tjabs4B
VOL = 0.7 V
VOL = 0.4 V, VOH = 2.0 V
VOH = 2.0 V, VOL = 0.4 V
VT = 1.25 V
VT = 1.25 V
VT = 1.25 V
VT = 1.25 V
1_{Guaranteed by design, not 100% tested in production.}
8
MIN TYP MAX UNITS
13.5
45 Ohm
13.5
45 Ohm
2
2.2
V
0.33 0.4 V
-41 -28 mA
29
37
mA
1.3 1.6 ns
1.1 1.6 ns
45
54
55
%
60 250 ps
1
3
%
-5
5
%