ics9248-107 Integrated Device Technology, ics9248-107 Datasheet - Page 7

• Manufacturer Part Number: ics9248-107
• Description: Frequency Timing Generator For Pentium Ii Systems
• Manufacturer: Integrated Device Technology

1
T
T
Electrical Characteristics - Group Offset
Electrical Characteristics - CPUCLK
Guaranteed by design, not 100% tested in production.
A
A
Output High Voltage
Output Low Voltage
Output High Current
Jitter, Cycle-to-cycle
Output Low Current
= 0 - 70C; V
= 0 - 70º C; V
PARAMETER
CPU to IOAPIC
Duty Cycle
Rise Time
Fall Time
CPU to 3V66
CPU to PCI
Skew
Group
DD
= 3.3 V +/- 5%, V
DD
= 3.3 V +/-5%, V
SYMBOL
t
jcyc-cyc2B
0.8 to 1.8 ns CPU leads
1.5 to 4.0 ns CPU leads
V
V
0 to 1.5 ns CPU leads
I
I
t
d
d
t
t
OH2B
sk2B
OL2B
r2B
f2B
DDL
OH2B
OL2B
t2B
t2B
1
1
1
1
1
= 2.5V +/- 5% (unless otherwise stated).
1
Offset
DDL
I
I
V
V
V
V
V
V
V
V
OH
OL
OL
OH
T
T
T
T
= 2.5V +/- 5 %; C
OH
OL
= 1.25 V CPU frequency < 142 MHz
= 1.25 V CPU frequency > 142 MHz
= 1.25 V
= 1.25 V
= 12 mA
= -12 mA
= 0.4 V, V
= 2.0 V, V
= 0.7 V
= 1.7 V
CPU @ 20 pF, 3V66 @ 30 pF
CPU @ 20 pF, PCI @ 30 pF
CPU @ 20 pF, IOAPIC @ 20 pF
OH
OL
CONDITIONS
= 2.0 V
= 0.4 V
L
Measurement Loads
7
= 20 pF (unless otherwise stated).
MIN
0.4
0.4
19
45
42
CPU @ 1.25V, IOAPIC @ 1.25 V
2
CPU @ 1.25V, 3V66 @ 1.5 V
CPU @ 1.25V, PCI @ 1.5 V
Measurement Points
ICS9248-107
TYP
1.03
1.11
49.3
46.4
141
2.3
-35
0.3
26
75
MAX UNITS
175
250
-19
0.4
1.6
1.6
55
52
mA
mA
ns
ns
%
%
ps
ps
V
V