ics9248-77 Integrated Device Technology, ics9248-77 Datasheet - Page 10

• Manufacturer Part Number: ics9248-77
• Description: Frequency Timing Generator For Pentium Ii Systems
• Manufacturer: Integrated Device Technology

ICS9248-77
T
1
T
1
Electrical Characteristics - CPU/2
Electrical Characteristics - CPUCLK
No te: 1 . All o ffsets are to be meas u red at ris in g edg es.
Group Offset
Output High Voltage
Jitter, Cycle-to-cycle
Output High Voltage
Jitter, Cycle-to-cycle
Output Low Voltage
Output High Current
Guaranteed by design, not 100% tested in production.
Output Low Voltage
Output High Current
Guaranteed by design, not 100% tested in production.
Output Low Current
Output Low Current
A
A
CPU to IOAPIC
Jitter, One Sigma
Jitter, One Sigma
CPU to 3V66
= 0 - 70º C; V
= 0 - 70º C; V
3V66 to PCI
Jitter, Absolute
Jitter, Absolute
PARAMETER
PARAMETER
Duty Cycle
Duty Cycle
Rise Time
Rise Time
Fall Time
Group
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
jcyc-cyc2B
jcyc-cyc2B
t
t
V
t
V
t
V
V
jabs2B
t
jabs2B
I
I
d
I
I
d
j1s2B
j1s2B
t
t
t
t
sk2B
OH2B
OL2B
OH2B
OL2B
OH2B
r2B
f2B
OH2B
r2B
f2B
OL2B
t2B
OL2B
t2B
1
1
1
1
1
1
Offset
1
1
1
1
1
1
1
DDL
DDL
I
I
V
V
V
V
V
V
V
V
I
I
V
V
V
V
V
V
V
V
V
OH
OL
OH
OL
OH
OL
OL
OH
T
T
T
T
OH
OL
OL
OH
T
T
T
T
T
= 2.5 V +/-5%; C
= 2.5 V +/-5%; C
= 1.25 V
= 1.25 V
= 1.25 V
= 1.25 V
= 1.25 V
= 1.25 V
= 1.25 V
= 1.25 V
= 1.25 V
= 12.0 mA
= 12.0 mA
= -12.0 mA
= -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
CPU @ 20pF, IOAPIC @ 20pF
OH
CPU @ 20pF, 3V66 @ 30pF
OH
OL
OL
3V66 @ 30pF, PCI @ 30pF
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)
MIN
-250
MIN
-250
19
45
19
45
CPU @1.25V, IOAPIC @ 1.5V
2
2
CPU @1.25V, 3V66 @ 1.5V
3V66 @ 1.5V, PCI @ 1.5V
TYP
2.24
0.31
TYP
2.24
0.31
1.35
125
Measure Points
125
148
-31
-31
1.2
1.2
1.4
25
47
63
65
26
49
50
97
MAX UNITS
MAX UNITS
+250
+250
175
250
150
250
150
-19
-19
0.4
1.6
1.6
0.4
1.6
1.6
55
55
mA
mA
mA
mA
ns
ns
%
ps
ps
ps
ns
ns
%
ps
ps
ps
ps
V
V
V
V