ics9248-65 Integrated Device Technology, ics9248-65 Datasheet - Page 5

• Manufacturer Part Number: ics9248-65
• Description: Frequency Timing Generator For Pentium Iisystems
• Manufacturer: Integrated Device Technology

Absolute Maximum Ratings
T
1
No te: 1 . All o ffsets are to be meas u red at ris in g edg es.
Electrical Characteristics - Input/Supply/Common Output Parameters
Group Offset
Guaranteed by design, not 100% tested in production.
A
Input High Voltage
CPU to IOAPIC
Input High Current
Input Capacitance
Input Low Voltage
Input Low Current
Input Low Current
Clk Stabilization
CPU to 3V66
Transition Time
3V66 to PCI
= 0 - 70º C; Supply Voltage V
Input frequency
Supply Current
PARAMETER
Settling Time
Power Down
Group
Operating
Skew
Skew
Skew
1
1
1
1
1
1
1
1.5-4.0ns 3V66 leads
0.0-1.5ns CPU leads
1.5-4.0ns CPU leads
I
I
I
I
SYMBOL
DD3.3OP 100
DD3.3OP 133
DD3.3OP 144
DD3.3OP 154
t
I
t
t
CP U-3V66
DD3.3P D
3V66-P CI
CP U-P CI
T
T
C
V
C
V
I
I
STAB
I
T
F
trans
IL1
IL2
INX
IH
IH
IN
IL
i
s
Offset
DD
= VDDL = 3.3 V +/-5%, (unless otherwise stated)
V
V
V
C
C
C
C
C
V
Logic Inputs
X1 & X2 pins
To 1st crossing of target Freq.
From 1st crossing to 1% target Freq.
From V
V
V
V
L
L
L
L
L
T
T
T
IN
IN
IN
DD
= 1.5 V; V
= 1.5 V; V
= 1.5 V
= 0 pF; Select @ 100 MHz
= 0 pF; Select @ 133.3 MHz
= 0 pF; Select @ 144 MHz
= 0 pF; Select @ 154 MHz
= 0 pF; PWRDWN# = 0
= V
= 0 V; Inputs with no pull-up resistors
= 0 V; Inputs with pull-up resistors
= 3.3 V
DD
DD
= 3.3 V to 1% target Freq.
TL
TL
CPU @ 20pF, IOAPIC @ 20pF
CPU @ 20pF, 3V66 @ 30pF
3V66 @ 30pF, PCI @ 30pF
= 1.25 V
= 1.25 V
CONDITIONS
Measurement Loads
DD
V
MIN
SS
-200
12
27
1.5
CPU @1.25V, IOAPIC @ 1.5V
-5
2
-0.3
CPU @1.25V, 3V66 @ 1.5V
3V66 @ 1.5V, PCI @ 1.5V
14.318
TYP
-100
Measure Points
0.1
2.0
0.5
65
71
75
78
64
36
2.4
1.4
1.4
1
V
ICS9248-65
MAX
DD
160
200
0.8
16
45
1.5
5
5
3
3
4
4
+0.3
UNITS
MHz
mA
ms
ms
ms
pF
pF
ns
ns
ns
V
V
A
A
A
A