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ICS9248YF-134-T Datasheet(PDF) 6 Page - Integrated Circuit Systems

Part # ICS9248YF-134-T
Description  Frequency Timing Generator for PENTIUM II/III Systems
Download  13 Pages
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Manufacturer  ICST [Integrated Circuit Systems]
Direct Link  http://www.icst.com
Logo ICST - Integrated Circuit Systems

ICS9248YF-134-T Datasheet(HTML) 6 Page - Integrated Circuit Systems

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ICS9248-134
Group Offset
TA = 0 - 70º C; VDD = 3.3 V +/-5%, VDDL = 2.5 V +/-5%; CL = 20 pF (unless otherwise stated)
GROUP
OFFSET
MEASUREMENT LOADS
MEASURE POINTS
CPU to 3V66
0.0-1.5 ns; CPU leads.
CPU @ 20pF, 3V66 @ 30pF
CPU @ 1.25V, 3V66 @ 1.5V
3V66 to PCI
0.5-4.0 ns; 3V66 leads.
3V66 @ 30pF, PCI @ 30pF
3V66 @ 1.5V, PCI @ 1.5V
CPU to IOAPIC
0.5-4.0 ns; CPU leads.
CPU @ 20pF, IOAPIC @ 20pF
CPU @ 1.25V, IOAPIC @ 1.25V
CPU to PCI
0.5-4.0 ns; CPU leads.
CPU @ 20pF, PCI @ 30pF
CPU @ 1.25V, PCI @ 1.5V
1Guaranteed by design, not 100% tested in production.
Electrical Characteristics - CPUCLK
TA = 0 - 70º C; VDD = 3.3 V +/-5%, VDDL = 2.5 V +/-5%; CL = 20 pF (unless otherwise stated)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Output Impedance
1
RDSP2B
VO = VDD*(0.5)
13.5
30
45
Ω
Output Impedance
1
RDSN2B
VO = VDD*(0.5)
13.5
32
45
Ω
Output High Voltage
VOH2B
IOH = -12.0 mA
2
2.24
V
Output Low Voltage
VOL2B
IOL = 12.0 mA
0.31
0.4
V
Output High Current
IOH2B
VOH = 1.7 V
-31
-19
mA
Output Low Current
IOL2B
VOL = 0.7 V
19
25
mA
Rise Time
1
tr2B
VOL = 0.4 V, VOH = 2.0 V
1.1
1.6
ns
Fall Time
1
tf2B
VOH = 2.0 V, VOL = 0.4 V
1.4
1.8
ns
Duty Cycle
1
dt2B
VT = 1.25 V; CPU frequencies < 135 MHz
45
50
55
%
Skew
1
tsk2B
VT = 1.25 V
53
175
ps
VT = 1.25 V; CPU frequencies <135 MHz
179
275
VT = 1.25 V; CPU frequencies >=135 MHz
231
350
1Guaranteed by design, not 100% tested in production.
Jitter, Cycle-to-cycle
1
ps
tjcyc-cyc2B
Electrical Characteristics - CPU/2
TA = 0 - 70º C; VDD = 3.3 V +/-5%, VDDL = 2.5 V +/-5%; CL = 20 pF (unless otherwise stated)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Output Impedance
1
RDSP2B
VO = VDD*(0.5)
13.5
30
45
Ω
Output Impedance
1
RDSN2B
VO = VDD*(0.5)
13.5
31
45
Ω
Output High Voltage
VOH2B
IOH = -12.0 mA
2
2.2
V
Output Low Voltage
VOL2B
IOL = 12.0 mA
0.31
0.4
V
Output High Current
IOH2B
VOH = 1.7 V
-31
-19
mA
Output Low Current
IOL2B
VOL = 0.7 V
19
26
mA
Rise Time
1
tr2B
VOL = 0.4 V, VOH = 2.0 V
1.1
1.6
ns
Fall Time
1
tf2B
VOH = 2.0 V, VOL = 0.4 V
1.1
1.6
ns
Duty Cycle
1
dt2B
VT = 1.25 V
45
49
55
%
VT = 1.25 V; CPU frequencies <135 MHz
227
275
VT = 1.25 V; CPU frequencies >=135 MHz
306
350
1Guaranteed by design, not 100% tested in production.
Jitter, Cycle-to-cycle
1
ps
tjcyc-cyc2B


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