ICS9147-09 Datasheet, PDF (5/9 Pages) Integrated Circuit Systems – Frequency Generator & Integrated Buffers for 686 Series CPUs

ICS9147- 09
Electrical Characteristics at 3.3V
V_DD = 3.0 – 3.7 V, T_A = 0 – 70° C unless otherwise stated
PARAMETER
Rise Time¹
Fall Time¹
Rise Time¹
Fall Time¹
Rise Time¹
Fall Time¹
Duty Cycle¹
Duty Cycle¹
Jitter, One Sigma¹
Jitter, Absolute¹
Jitter, One Sigma¹
Jitter, Absolute¹
Jitter, Cycle to Cycle¹
Jitter, Cycle to Cycle¹
Input Frequency¹
Ratio of nominal to output
frequency
Logic Input Capacitance¹
Crystal Oscillator Capacitance^{1, 2}
Power-on Time¹
Clock Skew Window¹
Clock Skew Window¹
Clock Skew Window¹
Clock Skew Window¹
Clock Skew Window¹
SYMBOL
Tr1
Tf1
Tr3
Tf3
Tr4
Tf4
Dt
DT2
Tjis1
Tjab1
Tjis2
Tjab2
Tcc1
Tcc2
Fi
Fout1
CIN
CINX
ton
Tsk1
Tsk2
Tsk3
Tsk4
Tsk5
AC Characteristics
TEST CONDITIONS
20pF load, 0.8 to 2.0V
CPU, SDRAM, BUS & REF
20pF load, 2.0 to 0.8V
CPU, SDRAM, BUS & REF
20pF load, 0.8 to 2.0V
fixed 20 & 48 clocks
20pF load, 2.0 to 0.8V
fixed 20 & 48 clocks
20pF load, 0.4 to 2.0V , CPUL with
VDDL = 2.5V
20pF load, 2.0 to 0.4V, CPUL with
VDDL = 2.5V
20pF load @ VOUT=1.4V
All clocks except 48MHz and REF
20pF load @ VOUT=1.4V
48MHz and REF outputs
CPU & BUS Clocks; Load=20pF,
SDRAM; Load = 30pF, VDDL = 3.3
or 2.5V
FOUT=25 MHz, BSEL=1
CPU & BUS Clocks; Load=20pF,
SDRAM; Load = 30pF, VDDL = 3.3
or 2.5V
FOUT≥25 MHz, BSEL=1
Fixed CLK; Load=20pF
Fixed CLK; Load=20pF
CPU Clocks, Load=20pF BSEL=1
CPU Clocks, Load=20pF BSEL=1
VDDL=2.5V
With input driven at 14.31818MHz to
20.0, 48.0MHz
Logic input pins
X1, X2 pins
From VDD=1.6V to 1st crossing of
66.6 MHz VDD supply ramp < 40ms
CPU to CPU or SDRAM;
Load=20pF; @1.4V
(Same VDD)
BUS to BUS, SDRAM to SDRAM;
Load=20pF; @1.4V
CPU to BUS; Load=20pF; @1.4V
(CPU is early)
CPUL to BUS, VDDL=2.5V
Vth=1.25, CPUL (BUS Vth=1.4V)
SDRAM, CPUH (@3.3V, Vth=1.4V)
to CPUL (@2.5V Vth=1.25V)
Load=20pF
(2.5V CPUL is late)
MIN
-
-
-
-
-
-
47
40
-
-250
-
-5
12.0
-1
-
2
-
-
-
1.6
0.50
100
Note 1: Parameter is guaranteed by design and characterization. Not 100% tested in production.
TYP
0.9
0.8
0.9
1.1
2.0
1.6
52
50
50
-
1
2
-
-
14.318
-0.1
5
4
2.5
150
300
2.1
1.50
600
MAX
1.5
1.4
1.5
1.5
2.5
2.5
57
60
150
250
3
5
250
350
16.0
+1
-
6
4.5
250
500
4.6
3.0
850
UNITS
ns
ns
ns
ns
ns
ns
%
%
ps
ps
%
%
ps
ps
MHz
ppm
pF
pF
ms
ps
ps
ns
ns
ps
5