ICS9147-12 Datasheet, PDF (6/9 Pages) Integrated Circuit Systems – Pentium/ProTM System and Cyrix™ Clock Chip

ICS9147-12
Electrical Characteristics at 3.3V
V_DD = 3.0 – 3.7V, T_A = 0 –70° C unless otherwise stated
PARAMETER
Rise Time¹
Rise Time¹
Fall Time^1,3
Rise Time¹
Fall Time¹
Rise Time¹
Fall Time¹
Rise Time^1,3
Rise Time¹
Fall Time^1,3
Rise Time¹
Fall Time¹
Duty Cycle¹
Jitter, Cycle to Cycle¹
Jitter, One Sigma^{1, 2}
Jitter, Absolute^{1, 2}
Jitter Absolute¹
Jitter, One Sigma¹
Jitter, Absolute¹
Input Frequency¹
Logic Input Capacitance¹
Crystal Oscillator Capacitance¹
Power-on Time¹
Clock Skew¹
Clock Skew¹
Clock Skew¹
Clock Skew^1,2
Clock Skew¹
SYMBOL
Tr1a
Tr1b
Tf1
Tr2
Tf2
Tr3
Tf3
Tr4
Tr4a
Tf4
Tr5
Tf5
Dt
Tjc-c
Tj1s1
Tjab1
Tjab1a
Tj1s2
Tjab2
Fi
CIN
CINX
ton
Tsk1
Tsk2
Tsk2
Tsk3
Tsk4
AC Characteristics
TEST CONDITIONS
20pF load, 0.8 to 2.0V
CPU, 48MHz; VDD = 3.3V
20pF load, 0.8 to 2.0V
CPU; VDDL @ 2.5V
20pF load, 2.0 to 0.8V CPU, 48MHz;
30pF load SDRAM 0.8 to 2.0V
30pF load SDRAM 2.0 to 0.8V
30pF load PCI 0.8 to 2.0V
30pF load PCI 2.0 to 0.8V
20pF load, 0.8 to 2.0V
24MHz, REF (1:2) & IOAPIC
45pF load, 0.8 to 2.0V , IOAPIC with
VDDL = 2.5V
20pF load, 2.0 to 0.8V
24MHz, REF (1:2) & IOAPIC
Load = 45pF 0.8 to 2.0V REF0
VDD = 3.3V
Load = 45pF 2.0 to 0.8V, REF0
VDD = 3.3V
20pF load @ VOUT=1.4V
CPU, VDDL = 3.0 to 3.7V
CPU; Load=20pF,
SDRAM & BUS Clocks Load = 30pF
CPU; Load=20pF,
SDRAM & PCI Clocks Load = 30pF
PCI; Load=30pF
REF (1:2), 48/24MHz Load=20pF,
REF0 CL = 45pF
REF (1:2), 48/24MHz Load=20pF,
REF0 CL = 45pF
Logic input pins
X1, X2 pins
From VDD=1.6V to 1st crossing of
66.6 MHz VDD supply ramp < 40ms
CPU to CPU; Load=20pF; @1.4V
(Same VDD)
SDRAM to SDRAM;
Load=30pF @ 1.4V
PCI to PCI; Load=20pF; @1.4V
CPU(20pF) to PCI (30pF); @1.4V
(CPU is early)
SDRAM (30pF @3.3V) to CPU
(20pF @2.5V) (2.5V CPU is late)
Note 1: Parameter is guaranteed by design and characterization. Not 100% tested in production.
Note 2: Includes VDDL = 2.5V
Note 3: VDD3 = 3.3V
MIN
-
-
-
-
-
-
-
-
-
-
45
-
-250
-500
-
-5
12.0
-
-
-
-
-
-
1
TYP
0.9
1.5
0.8
1.0
0.9
1.2
1.1
0.83
2.2
0.81
1.6
1.6
50
250
50
-
-
1
2
14.318
5
18
2.5
150
150
300
2.6
250
MAX
1.5
2.0
1.4
1.6
1.5
2.0
1.9
1.4
2.6
1.3
2.0
2.0
55
300
150
250
500
3
5
16.0
-
-
4.5
250
250
500
4
400
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
%
ps
ps
ps
ps
%
%
MHz
pF
pF
ms
ps
ps
ps
ns
ps
6