ICS9248-107 Datasheet, PDF (7/14 Pages) Integrated Circuit Systems – Frequency Timing Generator for PENTIUM II Systems

ICS9248-107
Electrical Characteristics - Group Offset
T_A = 0 - 70C; V_DD = 3.3 V +/- 5%, V_DDL = 2.5V +/- 5% (unless otherwise stated).
Group
Offset
Measurement Loads
CPU to 3V66
0.8 to 1.8 ns CPU leads CPU @ 20 pF, 3V66 @ 30 pF
CPU to PCI
0 to 1.5 ns CPU leads CPU @ 20 pF, PCI @ 30 pF
CPU to IOAPIC
1.5 to 4.0 ns CPU leads CPU @ 20 pF, IOAPIC @ 20 pF
Measurement Points
CPU @ 1.25V, 3V66 @ 1.5 V
CPU @ 1.25V, PCI @ 1.5 V
CPU @ 1.25V, IOAPIC @ 1.25 V
Electrical Characteristics - CPUCLK
T_A = 0 - 70º C; V_DD = 3.3 V +/-5%, V_DDL = 2.5V +/- 5 %; C_L = 20 pF (unless otherwise stated).
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Output High Voltage
V_OH2B I_OH = -12 mA
Output Low Voltage
V_OL2B I_OL = 12 mA
Output High Current
I_OH2B
V_OH = 1.7 V
Output Low Current
Rise Time
Fall Time
Duty Cycle
Skew
Jitter, Cycle-to-cycle
I_OL2B
t_r2B1
t_f2B1
d_t2B1
d_t2B1
t_sk2B1
t_jcyc-cyc2B1
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 = 1.25 V CPU frequency < 142 MHz
V_T = 1.25 V CPU frequency > 142 MHz
V_T = 1.25 V
V_T = 1.25 V
1_{Guaranteed by design, not 100% tested in production.}
2
2.3
V
0.3 0.4 V
-35 -19 mA
19
26
mA
0.4 1.03 1.6 ns
0.4 1.11 1.6 ns
45 49.3 55
%
42 46.4 52
%
75 175 ps
141 250 ps
7