ICS9248-141 Datasheet, PDF (7/14 Pages) Integrated Circuit Systems – AMD - K7™ System Clock Chip

ICS9248-141
Electrical Characteristics - REF(0:1)
T_A = 0 - 70C; V_DD = 3.3V +/-5%; C_L = 20 pF (unless otherwise specified)
PARAMETER
SYMBOL
CONDITIONS
Output Impedance¹
Output Impedance¹
Output High Voltage
Output Low Voltage
Output High Current
Output Low Current
Rise Time¹
Fall Time¹
Duty Cycle¹
Jitter, Cycle-to-Cycle¹
R_DSP5B
R_DSN5B
V_OH5
V_OL5
I_OH5
I_OL5
t_r51
t_f51
d_t51
t_jcyc-cyc51
V_O=V_DD*(0.5)
V_O=V_DD*(0.5)
I_OH = -12 mA
I_OL = 9 mA
V_OH = 2.0 V
V_OL = 0.8 V
V_OL = 0.4 V, V_OH = 2.4 V
V_OH = 2.4 V, V_OL = 0.4 V
V_T = 1.5 V
V_T = 1.5 V
1_{Guaranteed by design, not 100% tested in production.}
MIN TYP MAX UNITS
20
24
60
Ω
20
44
60
Ω
2.4
V
0.4
V
-22 mA
16
mA
1.6
4.0
ns
1.8
4.0
ns
45
53
55
%
500 1000 ps
Electrical Characteristics - CPUCLK (Open Drain)
T_A = 0 - 70C; V_DD=3.3V +/- 5%; C_L = 20 pF (unless otherwise specified)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP
MAX
UNITS
Output Impedance
Z_O1
V_O=V_X
Output High Voltage
V_OH2B Termination to Vpull-up(external)
1
Output Low Voltage
V_OL2B Termination to Vpull-up(external)
Output Low Current
I_OL2B
V_OL = 0.3 V
18
Rise Time¹
t_r2B1
V_OH = 20%, V_OL = 80%
CPU0
CPUT1
2
2
60
Ω
1.8
V
0.8
V
mA
3.5
ns
3
Fall Time¹
t_f2B1
V_OH = 80%, V_OL = 20%
CPU0
CPUT1
1.4
1.6
1.1
1.2
ns
Differential voltage-AC¹
V_DIF
Note 2
Differential voltage-DC¹
V_DIF
Note 2
Diff Crossover Voltage¹
V_X
Note 3
0.4
Vpull-up(ext) + 0.6 V
0.2
Vpull-up(ext) + 0.6 V
1.2 1.5
1.8
V
Duty Cycle¹
d_t2B1
CPU0 between crossing points
47
51
57
%
CPUT1 @ 50% 90,100,133 MHz 47
54
57
Skew window¹
t_sk2B1
V_T = 50%
40
200
ps
Jitter, Cycle-to-cycle¹
Jitter, Absolute¹
tjcyc-cyc_2B1 V_T = V_X
tjabs_2B1 V_T = 50%
150
300
ps
140
250
ps
Notes:
1 - Guaranteed by design, not 100% tested in production.
2 - V_DIF specifies the minimum input differential voltages (V_TR-V_CP) required for switching, where V_TR is the "true" input Level
and V_CP is the "complement" input level.
3 - Vpull-up(external) = 2.7V, Min=Vpull-up(external)/2-150mV; Max=Vpull-up(external)/2 +150mV
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