ICS950508 Datasheet, PDF (12/19 Pages) Integrated Circuit Systems – Programmable Timing Control HubTM for PII/IIITTM

Integrated
Circuit
Systems, Inc.
ICS950508
Electrical Characteristics - CPU
T_A = 0 - 70°C; V_DDL = 2.5 V +/-5%; C_L = 10 - 20 pF (unless otherwise stated)
PARAMETER
Output Impedance¹
Output Impedance¹
SYMBOL
R_DSP2B
R_DSN2B
CONDITIONS
Vo=V_DD*(0.5)
Vo=V_DD*(0.5)
Output High Voltage V_OH2B I_OH = -1 mA
Output Low Voltage
V_OL2B I_OL = 1 mA
Output High Current
I_OH2B
V_OH@MIN = 1 V
V_OH@MAX = 2.375V
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
V_T = 1.25 V, CPU 66, SDRAM 100
Jitter, Cycle-to-cycle^{1 t}jcyc-cyc2B
CPU 100, SDRAM 100
CPU 133, SDRAM 100
CPU 133, SDRAM 133
1_{Guaranteed by design, not 100% tested in production.}
MIN TYP MAX UNITS
13.5 15
45
Ω
13.5 16.5 45
Ω
2 2.48
V
0.04 0.4
V
-60 -27
mA
-27
-7
27
63
mA
20
30
0.4 0.95 1.6 ns
0.4 0.85 1.6 ns
45
50
55
%
32 175 ps
200 250
165 250 _ps
400 450
180 250
Electrical Characteristics - IOAPIC
T_A = 0 - 70°C; V_DDL = 2.5 V +/-5%; C_L = 10 - 20 pF (unless otherwise stated)
PARAMETER
SYMBOL
CONDITIONS
Output Impedance¹
Output Impedance¹
R_DSP4B
R_DSN4B
Vo=V_DD*(0.5)
Vo=V_DD*(0.5)
Output High Voltage V_OH4B I_OH = -5.5 mA
Output Low Voltage
V_OL4B I_OL = 9 mA
Output High Current
I_OH4B
V_OH@MIN = 1.4 V
V_OH@MAX = 2.5V
Output Low Current
Rise Time¹
Fall Time¹
Duty Cycle¹
Jitter, Cycle-to-cycle¹
I_OL4B
t_r4B
t_f4B
d_t4B
t_jcyc-cyc4B
V_OL@MIN = 1.0 V
V_OL@MAX =0.2V
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
1_{Guaranteed by design, not 100% tested in production.}
MIN TYP MAX UNITS
9
30
Ω
9
30
Ω
2
V
0.4
V
-21
mA
-36
36
mA
31
0.4 0.9 1.6 ns
0.4
1
1.6 ns
45
50
55
%
250 500 ps
0470E—04/06/05
12