ICS94211 Datasheet, PDF (11/16 Pages) Integrated Circuit Systems – Programmable System Frequency Generator for PII/III™

ICS94211
Electrical Characteristics - CPU
T_A = 0 - 70º C;VDD = 3.3V; V_DDL = 2.5 V +/-5%; C_L = 10 - 20 pF (unless otherwise stated)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Output Impedance¹
Output Impedance¹
R_DSP2B
R_DSN2B
Vo=V_DD*(0.5)
Vo=V_DD*(0.5)
13.5 15
45
Ω
13.5 16.5 45
Ω
Output High Voltage
V_OH2B I_OH = -1 mA
2 2.48
V
Output Low Voltage
V_OL2B I_OL = 1 mA
0.04 0.4 V
Output High Current
I_OH2B
V_OH@MIN = 1 V
V_OH@MAX = 2.375V
-60 -27
mA
-27
-7
Output Low Current
Rise Time¹
Fall Time¹
Duty Cycle¹
Skew¹
I_OL2B
t_r2B
t_f2B
d_t2B
t_sk2B
V_OL@MIN = 1.2 V
V_OL@MAX =0.3V
V_OL = 0.4 V, V_OH = 2.0 V
V_OH = 2.0 V, V_OL = 0.4 V
V_T = 1.25 V
V_T = 1.25 V
27
63
mA
20
30
0.4 1.2 1.6 ns
0.4 0.9 1.6 ns
45 46.9 55
%
12.7 175 ps
Jitter, Cycle-to-cycle^{1 t}jcyc-cyc2B
V_T = 1.25 V, CPU 66, SDRAM 100
1_{Guaranteed by design, not 100% tested in production.}
150 250 ps
Electrical Characteristics - PCI
T_A = 0 - 70º C; V_DD = 3.3 V +/-5%, C_L = 40 pF for PCI0-1, C_L = 10 - 30 pF for other PCIs (unless otherwise stated)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Output Impedance¹
Output Impedance¹
R_DSP1
R_DSN1
Vo=V_DD*(0.5)
Vo=V_DD*(0.5)
12
55
Ω
12
55
Ω
Output High Voltage
Output Low Voltage
Output High Current
V_OH1
V_OL1
I_OH1
I_OH = -1 mA
I_OL = 1 mA
V_OH@MIN = 1 V
V_OH@MAX = 3.135V
2.4
V
0.55 V
-33
-33
mA
Output Low Current
I_OL1
V_OL@MIN = 1.95 V
V_OL@MAX =0.4V
30
38
mA
Rise Time¹
Fall Time¹
Duty Cycle¹
Skew¹
Jitter, cycle-to-cycle¹
t_r1
t_f1
d_t1
t_sk1
t_jcyc-cyc1
V_OL = 0.4 V, V_OH = 2.4 V,
V_OL = 2.4 V, V_OH = 0.4 V, PCI0-3
V_T = 1.5 V
V_T = 1.5 V
V_T = 1.5 V
0.5 1.5
2
ns
0.5
1.5
2
ns
45 52.5 55
%
49 500 ps
200 500 ps
1_{Guaranteed by design, not 100% tested in production.}
11