ICS9248-135 Datasheet, PDF (12/15 Pages) Integrated Circuit Systems – Frequency Generator & Integrated Buffers for Celeron & PII/III™& K6

ICS9248-135
Electrical Characteristics - CPU
T_A = 0 - 70C; V_DD = VDDL = 3.3 V +/-5%; C_L = 10 - 20 pF (unless otherwise stated)
PARAMETER
SYMBOL
CONDITIONS
Output Impedance
Output Impedance
R_DSP2A1
R_DSN2A1
VO=VDD*(0.5)
VO=VDD*(0.5)
Output High Voltage
V_OH1a I_OH = -20.0 mA
Output Low Voltage
V_OL1a I_OL = 12 mA
Output High Current
I_OH1a
V_OH = 2 V
Output Low Current
Rise Time
Fall Time
Duty Cycle
Skew
Jitter, Cycle-to-cycle
I_OL1a
t_r1a1
t_f1a1
d_t1a1
t_sk1a1
t_jcyc-cyc1a1
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
V_T = 1.5 V
1_{Guaranteed by design, not 100% tested in production.}
MIN
10
10
2
22
0.4
0.4
45
TYP
36.5
29
2.85
0.31
-45
29
1.24
1.6
52.6
80.8
128
MAX
40
40
0.4
-19
2
2
62
175
250
UNITS
Ω
Ω
V
V
mA
mA
ns
ns
%
ps
ps
Electrical Characteristics - CPU
T_A = 0 - 70C; V_DD = 3.3 V +/-5%, V_DDL = 2.5 V +/-5%; C_L = 10 - 20 pF (unless otherwise stated)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP
Output Impedance
Output Impedance
Output High Voltage
R_DSP2A1
R_DSN2A1
V_OH1B
VO=VDD*(0.5)
VO=VDD*(0.5)
I_OH = -12.0 mA
10 36.5
10
29
2
2.3
Output Low Voltage
V_OL1B I_OL = 12 mA
0.31
Output High Current
I_OH1B
V_OH = 1.7 V
-39
Output Low Current
Rise Time
Fall Time
Duty Cycle
Skew
Jitter, Cycle-to-cycle
I_OL1B
t_r1B1
t_f1B1
d_t1a1
t_sk1a1
t_jcyc-cyc1B1
t_jcyc-cyc1B1
V_OL = 0.7 V
V_OL = 0.4 V, V_OH = 2.0 V
V_OH = 2.0 V, V_OL = 0.4 V
V_T = 1.5 V
V_T = 1.5 V
V_T = 1.25 V CPU, SDRAM Synchronous
V_T = 1.25 V CPU, SDRAM Asynchronous
19
26
1.03
1.26
45 51.7
66.1
170
124.5
1_{Guaranteed by design, not 100% tested in production.}
MAX
40
40
0.4
-21
1.6
1.6
55
175
250
350
UNITS
Ω
Ω
V
V
mA
mA
ns
ns
%
ps
ps
ps
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