ics9248-72 ETC-unknow, ics9248-72 Datasheet - Page 8

• Manufacturer Part Number: ics9248-72
• Description: Frequency Timing Generator Pentium Systems
• Manufacturer: ETC-unknow

Preliminary Product Preview
T
1
Absolute Maximum Ratings
Electrical Characteristics - Input/Supply/Common Output Parameters
ICS9248-72
No te: 1 . All o ffsets are to be meas u red at ris in g edg es.
Group Offset
Guarenteed by design, not 100% tested in production.
A
Input High Voltage
Input High Current
Input Capacitance
Input Low Voltage
Input Low Current
Input Low Current
CPU to IOAPIC
Clk Stabilization
Transition Time
= 0 - 70C; Supply Voltage V
CPU to 3V66
Input frequency
Supply Current
Supply Current
Pin Inductance
3V66 to PCI
PARAMETER
Settling Time
Power Down
Operating
Group
Delay
1
1
1
1
1.5-4.0ns 3V66 leads
0.0-1.5ns CPU leads
1.5-4.0ns CPU leads
SYMBOL
t
t
I
I
PZH
PLZ
DD3.3OP
DD3.3PD
T
T
C
C
L
V
C
V
I
I
STAB
I
T
F
trans
IL1
IL2
INX
IH
pin
out
,t
,t
IH
IN
IL
i
s
PZH
PZH
DD
Offset
= 3.3 V +5%, VDDL=2.5 V+ 5%(unless otherwise stated)
V
V
V
C
C
V
Logic Inputs
Out put pin capacitance
X1 & X2 pins
To 1st crossing of target Freq.
From 1st crossing to 1% target Freq.
From V
output enable delay (all outputs)
output disable delay (all outputs)
IN
IN
IN
L
L
DD
= 0 pF; Select
= 0 pF; With input address to Vdd or GND
= 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.
CPU @ 20pF, IOAPIC @ 20pF
CPU @ 20pF, 3V66 @ 30pF
3V66 @ 30pF, PCI @ 30pF
CONDITIONS
Measurement Loads
V
MIN
SS
27
-5
2
1
1
CPU @1.25V, IOAPIC @ 1.5V
-0.3
CPU @1.25V, 3V66 @ 1.5V
3V66 @ 1.5V, PCI @ 1.5V
14.318
TYP
Measure Points
7
5
6
V
MAX
DD
0.8
45
10
10
5
3
3
+0.3
UNITS
MHz
mA
mS
mS
mS
nH
pF
pF
pF
nS
nS
V
V
A
A
A
A