ICS9248-73 Datasheet, PDF (8/15 Pages) Integrated Circuit Systems – Frequency Timing Generator for Pentium II Systems

ICS9248 - 73
Electrical Characteristics - IOAPIC
T_A = 0 - 70º C; V_DD = 3.3 V +/-5%, V_DDL = 2.5 V +/-5%; C_L = 20 pF (unless otherwise stated)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP
Output High Voltage VOH4B IOH = -8 mA
2
2.3
Output Low Voltage VOL4B IOL = 12 mA
0.36
Output High Current
IOH4B VOH = 1.7 V
-24
Output Low Current
IOL4B VOL = 0.7 V
Rise Time¹
Tr4B VOL = 0.4 V, VOH = 2.0 V
Fall Time¹
Tf4B VOH = 2.0 V, VOL = 0.4 V
Duty Cycle¹
Dt4B VT = 1.25 V
Jitter, Cycle-to-cycle¹ t_jcyc-cyc4B V_T = 1.25 V
1_{Guaranteed by design, not 100% tested in production.}
19
23
0.4 1.4
0.4 1.45
45
50
140
MAX UNITS
V
0.4 V
-16 mA
mA
2.1 ns
2.2 ns
55 %
500 ps
Electrical Characteristics - SDRAM
T_A = 0 - 70º C; V_DD = 3.3 V +/-5%, V_DDL = 2.5 V +/-5%; C_L = 30 pF (unless otherwise stated)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP
Output High Voltage V_OH3 I_OH = -25 mA
Output Low Voltage
V_OL3 I_OL = 20 mA
Output High Current
I_OH3
V_OH = 2.0 V
Output Low Current
I_OL3
V_OL = 0.8 V
Rise Time
T_r31
V_OL = 0.4 V, V_OH = 2.4 V
Fall Time
T_f31
V_OH = 2.4 V, V_OL = 0.4 V
Duty Cycle
Skew¹
D_t31
V_T = 1.5 V
Tsk1
VT = 1.5 V
Jitter, Cycle-to-cycle
t_jcy
1
c-cyc3B
V_T = 1.25 V
1_{Guarenteed by design, not 100% tested in production.}
2.4 2.9
0.32
-73
41 50
0.4 0.95
0.4
1
45 53
85
110
MAX UNITS
V
0.4 V
-40 mA
mA
2
ns
2
ns
55 %
250 ps
250 ps
8