ics9248-97 ETC-unknow, ics9248-97 Datasheet - Page 7

• Manufacturer Part Number: ics9248-97
• Description: Frequency Timing Generator Pentium Systems
• Manufacturer: ETC-unknow

1
T
Note: 1. All offsets are to be measured at rising edges.
1
Electrical Characteristics - CPU/2
T
Group Offset
Electrical Characteristics - CPUCLK
Guaranteed by design, not 100% tested in production.
Guaranteed by design, not 100% tested in production.
A
Output High Voltage
Jitter, Cycle-to-cycle
A
Output Low Voltage
Output High Current
CPU to IOAPIC
Output High Voltage
Jitter, Cycle-to-cycle
Output Low Current
Output Low Voltage
Output High Current
Output Low Current
Output Impedance
Output Impedance
Output Impedance
Output Impedance
CPU to 3V66
= 0 - 70º C; V
= 0 - 70º C; V
3V66 to PCI
PARAMETER
PARAMETER
Duty Cycle
Duty Cycle
Group
Rise Time
Rise Time
Fall Time
Fall Time
Skew
DD
DD
= 3.3 V +/-5%, V
= 3.3 V +/-5%, V
1.5-4.0ns 3V66 leads
0.0-1.5ns CPU leads
1.5-4.0ns CPU leads
SYMBOL
SYMBOL
t
t
R
R
jcyc-cyc2B
R
R
jcyc-cyc2B
V
V
V
V
I
I
I
I
DSN2B
d
t
DSP2B
DSN2B
d
t
t
DSP2B
t
t
OH2B
OL2B
OH2B
sk2B
OL2B
OH2B
OL2B
r2B
f2B
OH2B
OL2B
r2B
f2B
t2B
t2B
Offset
1
1
1
1
1
1
1
1
1
1
1
1
1
DDL
V
V
I
I
V
V
V
V
V
V
DDL
V
V
I
I
V
V
V
V
V
V
V
V
OH
OL
OH
OL
O
O
OH
OL
OL
OH
T
T
O
O
OH
OL
OL
OH
T
T
T
T
= 1.25 V
= 1.25 V
= V
= V
= 1.25 V CPU Frequencies: 100 to 159MHz
= 1.25 V CPU Frequencies: 162 to 180MHz
= 1.25 V
= 1.25 V
= 12.0 mA
= V
= V
= 2.5 V +/-5%; C
= -12.0 mA
= 12.0 mA
= 2.5 V +/-5%; C
= -12.0 mA
= 0.7 V
= 0.4 V, V
= 0.7 V
= 0.4 V, V
= 1.7 V
= 2.0 V, V
= 1.7 V
= 2.0 V, V
DD
DD
DD
DD
*(0.5)
*(0.5)
*(0.5)
*(0.5)
CPU @ 20pF, IOAPIC @ 20pF
CPU @ 20pF, 3V66 @ 30pF
3V66 @ 30pF, PCI @ 30pF
OH
OL
OH
OL
CONDITIONS
CONDITIONS
= 2.0 V
= 0.4 V
= 2.0 V
= 0.4 V
Measurement Loads
L
L
= 20 pF (unless otherwise stated)
= 20 pF (unless otherwise stated)
CPU @1.25V, IOAPIC @ 1.5V
CPU @1.25V, 3V66 @ 1.5V
3V66 @ 1.5V, PCI @ 1.5V
MIN
MIN
13.5
13.5
13.5
13.5
19
45
19
45
41
2
2
Measure Points
TYP
TYP
0.31
1.21
1.17
48.6
2.24
0.31
1.47
1.51
50.5
47.5
227
-31
218
2.2
-31
30
31
26
30
32
25
27
ICS9248-97
MAX UNITS
MAX UNITS
250
-19
175
300
0.4
1.6
1.6
-19
0.4
1.8
1.8
45
45
55
45
45
55
51
mA
mA
mA
mA
ns
ns
%
ps
V
V
ns
ns
%
ps
ps
V
V